2012年2月29日 星期三

A Bit About Thermometers


The thermometer has been one of the most useful instruments of science since Galileo first invented it during the late 16th century. Since that time, they have evolved into many different configurations and designs, and they are still as valuable today as they have ever been. Thermometers are used for conducting scientific experiments, industrial applications, and even cooking. However, one of their most popular uses is for weather prediction, and the indoor outdoor thermometer has become one of the most popular styles for this particular application.

The modern indoor outdoor thermometer is considerably more advanced than those that were used even just a decade or two ago. Unlike a simple thermometer that merely indicates the temperature, these devices can continually track a number of weather prediction factors. Digital technology allows them to keep track of temperature, humidity and even barometric pressure, all of which can be seen on an easy to read display. Furthermore, this technology allows all of these different sensors to exist within an extremely compact module. In many cases, these devices are smaller than the average clock radio and can be easily placed on a bookshelf, end table, or even a windowsill.

Today, wireless designs seem to be the most popular when it comes to this type of thermometer. These systems utilize a series of sensors that can be placed around a given property in order to give accurate readings of the outside weather conditions. The information they gather (temperature, humidity, etc.) is relayed to a central unit that is kept inside the house, where the readings can be easily read off of a digital display. In addition to these remote sensors, the central control unit often contains its own sensors that are used to gather the same information, but from inside the house. The combination of these two sets of information is why they are considered an "indoor outdoor" thermometer, as opposed to those that only track one set of numbers.

Despite their capabilities, these little devices are generally inexpensive to purchase. They are commonly sold through just about every home improvement store, as well as through many electronics retailers.




Jennifer R. Scott has been writing for over ten years on a broad range of topics. She has a background that includes such diverse areas as environmentalism, cooking, animal care, and technology. If you would like more information about a indoor outdoor thermometer, please visit this site.





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Basic Essentials of Dehumidifier


A dehumidifier is an essential tool in any house or company as it helps reduce the humidity level by removing excess of moisture from the air. Humid air is harmful to human health in many ways. It can also lead to wall stains, peeling of paint, and water build up.

The tool is used mostly in winter when there is cold temperature and limited ventilation. In such a case regulating humidity level becomes very important to set an optimum balance for living healthy. Dehumidifiers are commonly used in the winter, when outside surfaces are cold and ventilation is limited by insulation systems.

Compressor, condenser, evaporator, fan, and collection unit are the essential components of the dehumidifier. Compressor begins its operation when the power is switched on and functions to compress the refrigerant gas. When the gas is passed into the evaporator, it gets cold because the gas when enters the components expands and cools down. Then the fan works to pass the air over the evaporator and the condenser to draw in moist air. The moist air is then dripped out into the collection tank for disposal. The cycle continues in a similar manner with the air passing over the condenser once again. In the condenser it gets warm and the same cycle repeats from cooling down to disposal.

There are various types of dehumidifiers and each work on their unique set of principles. The basic and the most common principle of working is the vapor compression refrigeration cycle. According to this operation, air is passed over a cold surface to remove the moisture condensed onto the surface. The condensed moisture then starts dripping out into a container and is then disposed completely.

Some of the significant types are the heat pump, chemical absorbent, dehumidifying ventilator, and home-made dehumidifiers. Heat pump makes use of an electrically driven refrigeration cycle to draw out moisture from the air. These are the most common types and have relatively complex machinery with a heat pump, two sets of coils, fan, control panel, water bucket, and drain system. In this type the moist air is circulated over the evaporator to cool down the air. This cooling reduces the air temperature and cause condensation of water vapor. The condensate is then collected in the bucket and drained out.

Chemical absorbent dehumidifiers are very effective for removing humidity from air especially during hot and humid climate. This type makes use of a chemical drying agent or a desiccant to extract moisture from air through a duct.

Dehumidifying ventilators work on the principle of sensors that are used to detect high levels of humidity. This type becomes functional only when signals of high humidity level are given by the sensors.

Homemade dehumidifiers extract moisture using bags of de-icing salt that is considered to be a natural condenser. To increase the effectiveness a fan is used to blow air into the bucket which is then collected in the container and disposed.

Dehumidifiers are available in different sizes and shapes to meet the needs and taste of different individuals.




To know more check Dehumidifiers.





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2012年2月28日 星期二

Bathroom Exhaust Fan - Does Your Bathroom Need Extra Ventilation?


Most modern houses are designed to include adequate ventilation. You may notice the importance of this during the winter when windows are often kept shut and the house is heated. The hot air rises and when it condenses will turn to moisture. This allows mold and bacteria to breed and can soak into the foundations of the building. The mold and mildew is a potential hazard for the inhabitants of the house and the damp is a potential hazard for the house itself. Thus it is important that ventilation allows the air to circulate and hot air to be released.

This is certainly no more true than in the bathroom and the kitchen. The bathroom is constantly being used and this generally means using hot water for a shower, bath or shave. This causes hot vapor or steam that will rise to the ceiling. When the temperature drops in the bathroom, this steam will condense and leave moisture. This is a potential health hazard and again is not good for the long term maintenance of the room itself. Thus modern bathrooms, especially those with showers come with a bathroom exhaust fan. This article will discuss ventilating the bathroom and some things to consider in the ventilation fan.

A bathroom ventilation fan removes moist air from the room before it can condense and leave moisture on the walls and ceiling. It can also remove smells from the room. The fan is normally set to activate whenever the shower is turned on or even the ambient light. It is then set by a timer to continue running for a few minutes after the shower is turned off. This can be set on installation and changed if the air is not being removed effectively. New modifications on this include using a humidity sensor that keeps the fan running until the moisture reaches a certain level. This is probably more efficient, in terms of electricity usage, than the standard timer set up.

The industry standard for a bathroom ventilation fan is that it should be able to remove eight times the volume of air in the room every hour. This means you have to work out the volume of air that is contained in your bathroom before buying a fan. This can be done by getting the dimensions of the room (width x length). Bathroom exhaust fans are rated by cubic foot per minute. Depending on the size of the bathroom, you may also have to take into account the number of fixtures, like shower, bath, tub, sink and toilet in the room.

Another consideration of ventilation, especially during the summer months or during the day, is that you can simply open a window for ventilation. This will decrease the length of time the fan has to run for or you can switch it off for the summer. It is important to get the right fan for the size of room as it can make a rather annoying noise. If the fan is too big or room too small (or both) you might find that it makes your experience in the bathroom unsatisfying.




If you want to breathe new life into your home or are simply looking for a bit of inspiration then visit http://www.finehomeideas.com - The site gives tips and advice for home renovation and interior design, including bathroom shower ideas and ideas for bathroom cabinets. Adrian Whittle gives ideas on how to make your home special.





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A Solution to Black Mold Problems


In this article we are going to briefly discuss black mold and how it affects you. More importantly, for a solution to black mold problems, please read to the end.

Appearing as a greenish black color around your house, it's more famously known as 'black mold'.

Can it affect your health? Good question. Well, everyone is different and there are varying levels of tolerances to consider here. So not everyone will be affected the same way. However what is more important is that people with weak immune systems, infants and young children as well as the elderly are at an increased risk of experiencing adverse health effects related to mold exposure.

There are many ways that we are exposed to mold. For instance through the skin, it can be inhaled and even ingested. Allergic reactions can be triggered by mold with symptoms such as


Runny nose
Itchy-watery eyes
Coughing and sneezing
Throat irritation
Asthma

Back in 1999 the USA Today cover story reported that a 300% increase in the asthma rate over the past 20 years has been linked to molds.

That's quite a staggering fact.

Once mold infests and gets a grip on your home, it can be very expensive to clean up. To make matters worse, many home insurance companies are denying any type of mold claims.

Even the value of your home could be at risk through mold infestation. If it has not been cleaned properly through expensive methods and efforts, it may not even be inhabitable.

Do we have any control over black mold?

The answer is yes, thankfully, however understanding the problem is critical before finding the solution to black mold.

Big question...do you have a humidity problem?

Damp conditions make a perfect breeding ground for the small pores to multiply.

So it is vitally important to recognize that the way to control indoor mold growth is to control moisture. So it is advisable to invest in a reliable, quality dehumidifier as a starter.

Equally as important...if you do have a problem with humidity, you also need to know where the problem lies i.e.which areas or rooms. Humidity sensors are relatively inexpensive and well worth the money as they can be placed around the home and they will monitor the humidity levels. As a guide anything over 55% or more (humidity), then you are at risk.

Remember black mold can grow on anything porous. For instance, wood,cement, paper, clothing of all types, behind wallpaper, ceiling tiles and other common household building materials.

So, not trying to scare you here, but this is a massive problem that can affect just about every home if we are not careful. There is a simple solution to black mold. The more you understand it, the better chance you have of eradicating it. If anyone in your household has asthma or suffers from any type of allergies, then getting rid of black mold is a big MUST!




Leo enjoys writing articles online. This author covers a broad range of interesting topics however he specializes in fitness, dieting and weight loss, you can check out his informative website at http://www.antioxidants-guide.com/health benefit of berries which discusses the benefits of berries in particular the Yumberry fruit.





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2006 Volkswagen Phaeton


The 2006 Volkswagen Phaeton is a luxury full sized sedan with the highest stability control. The wheel base in which the phaeton Rides is about 118-inch, hereby affording the passengers enough room for their legs in case of comfort. Just like the Mercedes 5-class and BMW 745: the Volkswagen phaeton is nearly 204 inches long and 57 inches tall in length. It's wheel drives has a full time safety features which includes a four zonal climate control system which consist of a separate temperature control, humidity sensors, an onboard computer system which is been operated or control from the Back seat.

The interior of the Volkswagen phaeton has a luxurious cabin trimmed from the finest woods, Italian leather, brushed metals and powerful chromes. A four or five seats configuration is also available for customers to choose from. The navigator system uses a seven inches colored screen with its computer and also stereo system. The phaeton's controls seems more understandable more than it's predecessors, it has an air control system that offers a continuous damping control system that also affects the phaeton to adapt automatically to the main road even without the drivers input.

Though been an entertaining Ride, the phaeton weight deprives it from delivering that athletic feeling which all its competitors have.

The phaeton's exterior is simple and attractive, being the largest and coolest car in the history of Volkswagen, it's standard features includes ABS, front and Back air bags, anti skid system and curtain size of bags. The faction air suspension is designed to adjust firmness automatically within the four driver's selectable levees available. The 3 passengers rear seat has been replaced with 4 seats .two model name for the engine of the all wheel drivers now comes with the phaeton Volkswagen 2006.it consist of the faction's sw12 engine which produces 444 horse power. It has a high intensive headlight, a heated windshield nozlewasher, an over size son roof, an entry exit light fixed at all the doors, a six C.D changer along side a 10-speaker premium sound system with a mounted glove box.

The interior of 2006 Volkswagen Phaeton has a twelve way power front seat with memory, a four way power adjust table lumber support, heaters, eucalyptus wood tromp, leader rapped staring wheel, mirrors with memories which include a set of self diamond, full set of sunshades, too mats, stainless steal pedals, and a skid bag with a truck pass through an additional window rating, an upgraded twelve speaker sound system which features digital sound processing. Available on 4.2 liters vs. which delivers 335 horse power and 6.0 liters w.12 which also delivers 444 horse powers the phaeton is an all wheel drive standard car.




Kingsley Duru has an BSc (Banking & finance). InfoFlakes.com offers our visitors the best of car articles, review and endeavors to find the best possible deals for our customers. To find Car review Blog.





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2012年2月27日 星期一

5 Ways You Can Do Data Logging in Less Than 5 Minutes


Logging data has many benefits. It can help you to save energy, be more efficient, solve a problem or find a trend. There are may different ways you can log data, like with a simple data logger, an embedded controller or with data acquisition modules connected to your PC. You can log at time intervals, like every minute or every hour. Most of these systems take about 5 minutes to set up.


You can log temperature and humidity data with a stand alone Data Logger. You can configure data loggers with your PC and you can set them up to log at desired intervals, like every 10 minutes. Then you can leave it for your desired period of time, like 5 days. Then you can connect the data logger back to your PC to retrieve the data. You can export the data into spreadsheets and make charts for analysis. It could help you to forecast what future temperature and humidity may be. It can also help you determine if a certain environment needs more industrial hardware for extreme conditions. An example of a stand alone temperature and humidity data logger is DL-100T485. If your PC doesn't have an RS-485 port, you can use a USB to RS-485 converter like I-7561 which has Windows 7, Vista, XP and Linux Drivers to communicate with it.

You can log data with a data acquisition module with Ethernet communication and your PC running data logging software. You can download software, like Free EZ Data Logger, which lets you log data from data acquisition modules like ET-7018Z. You can log data like current, voltage, temperature, and humidity. You connect sensors to the terminal block on the data acquisition module to help get the data to the PC. You can export the reports to excel or look at them in an Access Database. The amount of data you can log depends on the space available on your computer. You can make little buttons on the screen that trigger outputs when you click them. You can also send email alarms.

You can log data with a wireless data acquisition module and a PC. You can connect a wireless host converter to the PC. The wireless data acquisition module would communicate with the PC over wireless communication. Zigbee wireless is one solution that is robust and easy to set up. Each zigbee network has an RF channel and a PAN ID which is set up with a free software utility. Each module has a node ID. ZB-2550 is an example of a zigbee host that can be connected with a PC. ZB-2060 is an example of a wireless data acquisition module you can use to turn lights on and off. You can use a free software, like EZ Data Logger, to log the light activity over time. Then you can analyze the data and see trends or it can help you to figure out an optimal solution which can save energy.

You can use an embedded controller with I/O on board and an operating system inside, like Windows CE.NET 5.0. An example of an embedded controller with I/O on board is WP-5141-XW-107 which has 8 digital inputs and 8 digital outputs. You can log data onto a micro SD card. You can set up a data logging system with free data logging software, like eLogger, which can interface with the I/O on board. If you connect a digital motion sensor, you could log all the times the motion sensor is tripped.

You can log data with a data acquisition board in your PC. You can develop software in C Language or with a development platform like LabView. An example of a PCI board you can use to get data with is PCI-DA4U which has 4 Analog Outputs, 16 Digital Inputs and 16 Digital Outputs. Linux, Visual Basic, Borland C, LabView, and DasyLab software demos are available which can aid development and help keep development time down.

For more information, please visit http://www.icpdas-usa.com




Maria Lemone, Technical Sales Engineer. ICP DAS USA, Inc. http://www.icpdas-usa.com 888-971-9888

ICP DAS is a manufacturer of Industrial Data Communication, Automation Control and Test and Measurement products. We specialize in PLC Hardware, Ethernet controllers, distributed I/O modules, Industrial Ethernet Switches, PCI and ISA boards, and much more. We provide free technical support.





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Buying Guide and Tips To Get More Life Out Of Your Clothes Dryer


Buying a clothes dryer for your home is a fairly simple decision process. Once you have read this report, your buying decision might even be a bit easier.

Four manufacturers produce the clothes dryers that account for 80% of dryer sales in America. Those four primary brands are: GE, Maytag, Kenmore (a Sears brand), and Whirlpool.

There are other generic brand names that are sold in the marketplace, and most of those are subsidiaries of the major manufacturing companies. Maytag makes Amana. Electrolux makes Frigidaire, Westinghouse, and White-Westinghouse appliances. GE makes Hotpoint. And, both KitchenAid and Roper are made by Whirlpool.

There are really only five choices to make when choosing your next clothes dryer:

1. Size of Tub

2. Gas or Electric

3. Thermostat or Moisture Sensor Shutoff

4. Quiet Dry

5. Other Gadgets

SIZE OF TUB

There are three basic size designations in washers and dryers. There is Extra Large Capacity, Super Capacity and Super Capacity Plus, or a variation thereof. The actual volume difference between each of these size designations is really quite small on the grand scheme of things. Usually, we are talking an extra pair or two of blue jeans for each size increase.

When selecting the size capacity of a machine, it might be all right (though not recommended) to mix up your machine purchases, but you do not want to have your dryer size smaller than your washer size. It would be a real pain to fill your washer, wash your clothes, and then not be able to get all of your clothes into the dryer!

If there are one or two people in your household, then the Extra Large Capacity could make sense. But, if you have a house full of children, you should go ahead and spend the extra money to get a larger-sized machine. If your wife has one of the smaller machines, she will certainly have to run more loads in order to wash everyone's laundry.

Generally, if you have four people in your home, you will have to do two extra loads of laundry using the Extra Large Capacity, instead of the Super Capacity Plus machine. More loads of laundry equates to more water usage, more heating fuel usage (electric or gas), and a grumpier wife, since she spends an extra two to three hours a week doing laundry. That $80-$120 you are saving now, may cost you well over that amount over the life of your washer and dryer.

GAS OR ELECTRIC

The person who built your house usually makes the gas or electric decision for you, whether you like it or not. Most homes have either a 240-volt plug or a gas connector in the laundry room. Few, if any, builders put in both options.

If your home is equipped with the 240-volt plug, I highly recommend that you look to see if your plug is a three- or four-prong plug, prior to going to the store. Appliance manufacturers sell the actual dryer cords separate from the dryer. So, the retailer will ask you which plug you need with your machine.

If you want to save the ten dollars or so, you can use the dryer cord that is on the clothes dryer you are replacing. If the dryer cord that is currently on your machine is flimsy or brittle, I would strongly suggest buying the new cord. To do otherwise leaves your home vulnerable to a fire hazard.

If you have the choice between gas and electricity for your clothes dryer, gas machines will generally run another $50 or so. If you have to change your laundry configuration from gas to electric, you may very well spend that much on the electrician alone. Additionally, it is a well-known fact that gas dryers use less energy than electric dryers. So, over the long haul, your gas dryer will be more economical than your electric dryer --- even Consumer Reports recommends that you buy the gas dryer for this very reason.

THERMOSTAT OR MOISTURE SENSOR SHUTOFF

Thermostat controlled dryers are the dryers that only give you an option for timed drying.

More expensive dryers give you the option for timed drying or Moisture Sensor Shutoffs. Each manufacturer describes the Moisture Sensor Shutoff in different ways. Whirlpool calls it AccuDry. Some manufacturers refer to it as Energy Saver. Whatever they call it, the concept is the same. It has a moisture-sensor in the tub, and when the humidity level drops below a certain level, the machine will decide that the clothes are dry, and the dryer will shut off on its own.

Consumer Reports deems this an essential feature on any dryer that you might buy. The reasons are many:

1. Overdrying can damage or shrink fabrics, and moisture sensors will minimize this risk.

2. By shutting itself off when the clothes are done drying, you are no longer forced to waste gas or electricity drying "already dry" fabrics.

3. By running the dryer for a shorter period of time, you can wash more clothes in less time. Your wife will thank you.

QUIET DRY

Some machines have an extra quiet motor. It made a big difference in my home, since our laundry room is less than twenty feet from our living room. With our old, cheap dryer, we would need to turn our television up, if we were running laundry while we were in the living room. Just the very experience of drying clothes was enough to give me a headache. With our new quiet dry machine, we are not even aware that the dryer is running, until the buzzer goes off telling us that it is done. Awesome.

OTHER GADGETS

Clothes dryers cannot really get that technical. The additional options that are available on some machines are: heat level and special fabric settings. Really, they are the same thing, but the fabric settings take a lot of the guesswork out of figuring out what temperature you can run for each your fabric types.

Some machines have a buzzer to let you know when the dryer is finished. This one is nice sometimes, especially if you are trying to do as much laundry as you can in a short time span.

Lights inside the drum are a nice addition, though not always necessary.

TIPS TO EXTEND THE LIFE OF YOUR DRYER

Keeping good airflow in your machine is the one, essential step you can take to get the most life out of your clothes dryer. There are several factors that can affect airflow, and we will cover those factors here.

Any reduction in airflow creates several problems.

1. A clogged dryer is less efficient and uses more gas or electric to dry clothes.

2. It puts additional wear-and-tear on the machine's motor.

3. And, most importantly, it creates a fire hazard.

EXHAUST VENTILATION:

All of the manufacturers and Consumer Reports recommend using either rigid or flexible metal ducting for exhaust ventilation tubing. They strongly recommend against using the plastic or foil exhaust ventilation tubes. The reasons are many.

1. They are notorious collectors of lint, and can get clogged easily.

2. The can be stepped on and crushed, preventing good airflow.

3. They can sag, also preventing proper airflow.

4. They can easily be torn and damaged.

Anytime the ventilation tube gets clogged or blocked, it can force lint to back up into your dryer causing additional blockages.

Even with metal ducting, you should clean out your ventilation tube once a year.

LINT FILTER:

Some appliance manufacturers put the lint filter in the door, while others put it on top of the machine. For ease of cleaning, it is a matter of personal preference.

It is very important that you should clean your lint filter between each use. If you fail to clean it between each load, you run the risk of having the lint fall back into the internal components of the machine.

Any accumulations of lint are always a fire hazard.

Excess lint in your dryer can ignite and catch fire. This could easily destroy your dryer, and very possibly catch your house on fire.

In fact, the Wall Street Journal suggested that dryer lint is the perfect companion for camping or hiking trips, since it is light and easy-to-carry, and it makes excellent kindling for your campfire.

For more fire prevention and safety tips in connection with your clothes dryer, visit the Consumer Product Safety Commission website at: http://www.cpsc.gov/cpscpub/pubs/5022.html

THE ODD AND UNKNOWN BYPRODUCT OF DRYER SHEETS:

If you use dryer sheets when you dry your clothes, then you need to pay special attention to this tip.

Dryer sheets can reduce static and add a nice scent to your laundry, because they have chemicals in them. What few people realize is that these chemicals are released from the dryer sheet when they are heated, and they fill the hot air inside of your dryer.

As the machine is running, and after the cycle is finished, these chemicals settle on the various components inside your dryer, including the lint filters. After a period of time, these chemicals can create a clear, unseen barrier to your dryer's airflow.

Test this idea. Pull your lint filter from your machine and run it under water. Where the water pools and does not flow through, those chemicals have created an impenetrable barrier to your dryer's airflow.

Every few months, you should wash out your lint filter using soap, water and a sponge, to keep airflow at its optimum.

IN CONCLUSION...

Finding the right clothes dryer, for your own needs, does not have to be a difficult process. With a little knowledge, you can make a good decision. I hope this report has given you the information that you will need to make your decision easier.

Using the additional tips provided in this report, you should be able to keep your utility bills lower and to extend the life of your clothes dryers by another several years. If you take good care of your clothes dryer, your clothes dryer will take really good care of you for many years to come.




About The Author:
Emerson Lockwood specializes in Home Technology, Home Improvement and Home Financing topics. See more articles on everything from appliance repair to plumbing at his website: http://www.superhomeideas.com





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2012年2月26日 星期日

4 Of the Best Marley Extractor Fans Available


Marley extractor fans are quiet, energy efficient and reliable however, not all models are created equally. From small jobs to big jobs, Marley has an assortment of products to fit the needs and budget of anyone's bathroom installation. Whether you are looking for a fan to use for residential, commercial or industrial use, you will find one in the extensive Marley product line. Below are the top recommended popular choices for shower, toilet or bathroom fans.

Marley Bath Vent Fans

This fan from the Environmental Series line is Energy Star qualified, using 65 percent less energy than other conventional varieties on the market today. These are the ideal way to clear unwanted humidity and moisture from your room that would otherwise promote mold and mildew growth.

These styles use a double inlet blower that is extremely quiet and installation is very simple. Depending on the model, there are some available with a florescent lamp and their high density insulation is designed to absorb noise. Marley Bath Vent Fans have a built-in humidity sensor, heavy-duty galvanized housing and a spring mounted grille.

Marley Bathroom Ventilation Fan and Heat

This popular bathroom heater fan runs on two separate motors so one is used for ventilation and the other one provides heat. This fan offers an attractive white elliptical grille and the light is diffused with an unbreakable lexan lens. The Marley Ventilation Fan and Heat unit can be used in an insulated ceiling and it comes with an adjustable mounting bracket to provide easy installation.

Marley 899L Through the Wall Pull Chain Unit

This ventilator exhausts moisture and heat directly outside without using any duct work. Installation of this fan is extremely easy in existing structures, it uses a 9 inch rough opening, 12V and can be used in walls from 4 ? to 8 inches thick. The Marley Through the Wall unit is pull chain operated and features a plug in motor, deep-pitched powerful blades and weather-resistant and rustproof exterior parts.

Marley Super Q Ventilation CV8 2 Speed Fan

This model can be converted for inline discharge or mounted for direct discharge. The 25 HP provides super quiet ventilation. It features a large centrifugal blower to generate exceptional airflow and is housed in a chatter proof back draft damper. These Marley extractor fans have motors that are continuously lubricated for smooth operation, acoustic insulation and heavy gauge steel housing.




Want to know more about selecting marley extractor fans? Click Below!

http://www.bathroom-extractorfan.com/marley-extractor-fans.php





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Bathroom Extractor Fans - A Buyer's Guide


There is no room in the average household where it is more important to install an extractor fan than the bathroom. Preventing condensation build up, damp, mould and odour, a simple 4 inch model will help to keep your bathroom beautiful! The choice of bathroom extractor fan has never been greater, including those with timers, those with PIRs, those with humidistats, low voltage fans, low energy fans, slimline fans, and inline fans. This huge choice of extractor fan can be bewildering. The following article is intended as a guide to help the domestic buyer choose the right bathroom fan.

1. Wiring regulations and Bathroom Zones

2. Extractor Type

3. Size

4. Air Extraction Rate

5. Operation

6. Noise

7. Aesthetics

1. Wiring regulations

Since electric and water can make for a fatal combination, strict regulations were introduced dividing the bathroom into 4 zones: 0, 1, 2, 3. Zone 0 is in the bath. Zone 1 extends vertically 2.25m above the bath. Zone 2 extends in all directions for 0.6m from zone1 and zone 3 extends laterally for 2.4m from zone 2.

It is essential that you install the correct fan in the correct zone. Bathroom fans come in two voltages; Mains voltage (240v) and SELV or Safety Extra Low Voltage (12v). Mains voltage bathroom extractor fans may only be used in Zone 3 of the bathroom. In Zones 1 and 2 SELV bathroom fans (12 volt) ONLY must be used, with the transformer being housed in Zone 3. The only exception to this rule is the Airflow QuietAir: A mains voltage bathroom extractor fan that has been specifically designed with an IP45 rating to be used in all 3 zones. Inline fans are another special type of 240v bathroom extractor fan which are housed in the loft space above the bathroom in the middle of two lengths of ducting. Since the motor, impellars and all electrical parts are out of the zonal area, with only the duct and grille in the bathroom ceiling, they too are suitable for use in zone 1 or 2 above the bath or shower.

2. Types of bathroom extractor fan

There are two main types of bathroom extractor fan: Axial and Centrifugal. Axial fans are the ones that you are used to seeing on walls and ceilings and tend to have air extraction rates of between 85m3/hr and 95m3/hr on the 4 inch models. These are suitable for standard installations where the fan is intended to be ducted through the wall. Centrifugal fans tend to be (but not always) inline duct fans. (see previous section). Centrifugal fans are usually much more powerful than axial fans with air extraction rates of bewteen 110m3/hr and 220m3/hr on the 4 inch models. Centrifugal fans are particularly well suited to installations where long duct lengths are required. The Vent Axia Solo Plus, for example, can be used in duct runs up to 50m!

3. Sizes of bathroom fans

Domestic bathroom extractor fans come in two sizes: 4 inch /100mm and 6 inch / 150mm. In almost every case a 4 inch bathroom extractor fan will suffice. Six inch fans need only be considered in bathrooms greater than three metres squared, or where special circumstances require a more powerful fan,...such as bathrooms with no natural ventilation or particularly cold, north facing bathrooms.

4. Air Extraction Rate

Measured in 'Litres per Second' (L/s) or 'Metres Cubed per Hour' (m3/hr), the air extraction rate of a bathroom extractor fan is one of the most important considerations. The Building Regulations stipulate that a bathroom extractor fan must extract at least 15L/s in a standard domestic bathroom. Most 4 inch bathroom extractor fans far exceed this minimum requirement, and nowadays the standard is 85m3/hr. Any bathroom extractor fan with an extraction rate of 90m3/hr or above may be considered powerful.

5. Operation

Bathroom extractor fans have a range of operational features to suit different applications. The most simple is on/off via the bathroom light switch or integral pullcord. Bathroom fans with integral timers are great in bathrooms where large build ups of steam cause condensation problems, as the over run timer will keep the fan running for a desired period after it has been turned off....particularly useful if the fan is wired into the lighting circuit. Parents may prefer a bathroom fan with a PIR sensor which will operate the fan automatically when anybody enters the bathroom, whilst Landlords like those with humidity sensors, which switch on automatically when the relative humidity reaches a set level. This means that tenants are not relied upon to manually operate the bathroom fan.

6. Noise

Typical dB measurements for axial bathroom fans range between 35dB(A) and 45dB(A) with the more powerful centrifugal bathroom fans between 40dB(A) and 55dB(A). Whilst centrifugal fans are louder, it should be remembered that they are housed in the loft space and so are insulated and further away, lessesning the volume somewhat.

7. Aesthetics

Remember: you are likely to see this fan everytime you use the bathroom. The money you saved on it when purchasing will soon be forgotten, so don't install an ugly fan just because it's cheap. Homeowners are spending more in making their bathrooms beautiful with cool lighting and funky fixtures and fan designs have improved immensely. The old 'box with grilles' is slowly being replaced with unobtrusive and subtle 'tile' type designs which sit comfortably with any bathroom aesthetic.




Darren Gilbert writes for Gil-lec Electrical Wholesale and kindly asks that all links are retained should you wish to publish this article.

http://www.gil-lec.co.uk/products/Extractor+Fans/Bathroom+Fans





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2012年2月25日 星期六

Classification of Self Storage Facility


In the beginning, a storage facility was used only by some commercial entities. However, over the years, they have evolved as more of a necessity than a luxury. After a certain period of time our garages can no longer deal with our belongings that we indiscriminately, keep dumping there. Self storage warehouses have now become essential for a person who rents his or her house.

The number of moving storage companies have increased exponentially over the last few years. There are specialized self storage buildings everywhere today. For instance, mini storage units and climate controlled self storage.

Let us glance through the various types of storage facilities which are available out there:

The storage facilities can be classified either on the basis of their nature or on the basis of the duration for which they are rented. On the basis of their nature they can be either indoor or outdoor storage facilities. On the basis of duration they are classified as long term and short term storage houses.

Let us first discuss about the scope of usage and the services offered by long term and short term facilities. A long term storage facility is better equipped to prevent your belongings from the effect of climate and pests. Most of them are installed with temperature and humidity sensors. They also provide high end security arrangements and better deals on insurance. The short term storage units, on the other hand, are good only for those who are in the process of moving and don't need any specialized services. These facilities are more concerned with providing hassle free transportation services and expert help in packing and loading. These are also recommendable for students and those people who are going out for no more than a few weeks for vacations or other such trips.

While the rent of a long term storage facility is much higher than its counterpart, it is advisable that you do not keep your belongings in short term storage for a long time. At first you might think that you have saved some money, but at the end of the day you will probably, end up paying a huge price.

Speaking of the indoor and outdoor storage facilities, it is notable that most of the people are confused with respect to them. Outdoor storage is seldom used for storing anything other than vehicles. It is also a popular place to store recreational vehicles and boats. However, the thing with outdoor storage is that you should ensure that your vehicle is properly protected from inclement weather. Strong winds might blow away your car cover. You will need to inspect it from time to time. Also, if you leave your vehicle stalled for a long time, it might develop some snags. You will find that an outdoor storage facility located on the outskirts is much cheaper than the one in the main city.

Indoor storage units are more like dormitories. You pay for the area you use, but you share the roof with other people. This raises some concerns about safety, but if your provider is a reputed one, you need not worry about it. If you want to hire exclusive area with your own lock and key then you will have to splurge some big dollars.

A modern storage facility is equipped with all the features that you might need. All you need to do is a bit of research and you will find a good service provider in no time at all.




Storage-Mart.com maintains some of the leading storage facilities in the United States and Canada. You can check the website for affordable prices and superior service. For more information about storage facility, visit the given link.





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Angelcare Monitor AC1100 Will Create New Standard For Baby Monitors


The Angelcare Monitor AC1100 has filled a major void for parents in the baby monitor industry. No longer will just a "still-shot" or a live stream video monitor fit the bill when it comes to monitoring your baby as this left many parents and guardians still wondering if their baby was safe or even breathing.

Baby monitors have evolved over the past decade from just those that monitors sound via light indicator bars or a true audio signal, both receivable on a parents unit. Then this industry upgraded to the digital baby monitors as a digital display would indicate temperature or even humidity readings within your nursery room. Over the past 3-5 years, video monitors became more prevalent in this industry featuring flat screen LCD display and stronger signals to help assure home and room privacy as well as provide more flexibility to parents.

Movement baby monitors also came about around this time manufactured by both Angelcare and Babysense. The Babysense sensor device offers one movement and sound baby monitor which the speaker is mounted to the crib. Not the most ideal for larger homes or where parents won't be extremely close to the nursery room.

Angelcare offers multiple models to choose from yet these baby motion monitors are not exclusive to the Angelcare Monitor AC1100 model, as each of the Angel baby monitors comes with a movement sensor monitor (pads or sids monitor) which detects your baby's breathing movements while sleeping.

Though many of the forums and baby monitors reviews have supported and embraced new technology over the years, it's not until now that parents can seriously experience a sigh of relief knowing their baby looks safe and each breath is being monitored. As too many nights, parents stayed awake not knowing if their baby was sleeping, or even possibly experiencing "sids," (sudden infant death syndrome).

Though it would seem that although both the baby video monitor and movement sensor pad features hit the market around the same time, it was the video monitor that seemed to take a dominate interest among consumers. That is until the last few months with the announcement of the new Angelcare Monitor AC1100.

Angel Monitors has developed this exclusive model in hopes to now provide both parents and guardians the high level of home monitoring they have so much desired. The Angelcare AC1100 combines a high quality 2.75" touch screen video display and the baby motion monitors or sensor pad all in a single unit for consumers.

The AC1100 features an adjustable infrared camera for high quality night vision, thus no more need to access your nursery room while your baby is sleeping, along with a 2-way communication system allowing more of a walkie-talkie to help let your baby hear your voice if need be.

This Angel baby monitors sensor pad reads your baby's slightest breathing movements and an alarm will sound on the parents unit if no movement is detected for any 20 second period. The parents unit will also sound an alarm if the temperature were to drop or rise outside the pre-set limits you've programmed your unit for. And unlike many portable units, the parent unit can last up to 8 hours when full charged, thus allowing a constant flow of information to you as you check up on your baby.

Overall, the Angelcare Monitor AC1100 offers the most advanced touch-screen video monitoring device combined with a movement sensor pad, thus offering the most optimum features for monitoring your baby.




To see for yourself the baby monitor that is seriously blowing away all the baby monitor review sites go to Angelcare Monitor AC1100 or watch the promo video about the Angelcare AC1100 where you can learn more about how you can protect your baby with the most technologically advanced baby monitor available today.





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2012年2月24日 星期五

Partial Discharge Testing of Rotating Apparatus


Statistics indicate that up to 37 percent of rotating equipment failures occur due to stator insulation breakdown. For several decades, partial discharge (PD) testing has been a very beneficial tool for assessing the stator insulation condition of medium-voltage rotating apparatus. This article examines how PD activity occurs and why PD testing is unique as applied to generators and motors.

What is Partial Discharge?

Partial discharge is a localized partial breakdown within or on the surface of insulation that causes a spark to occur. This partial failure of the insulation is generally caused by poor design, flaws, voids, or contamination that create a localized stress that exceeds the dielectric breakdown strength of the insulation material. The sparking activity then leads to further insulation decomposition through a combination of thermal, chemical, and electrical phenomena and persists until complete failure occurs. The detection and monitoring of PD activity has been found to be very useful in assessing the condition of electrical equipment. Although PD can occur at lower voltages, equipment operating below 2,000 volts to ground usually does not discharge frequently and usually fails by other mechanisms.

Rotating Apparatus Insulation

Switchgear, cable, and transformer insulation cannot tolerate PD activity very well. Generally, PD activity will lead to further destruction of the insulation and eventual failure. Therefore, these types of equipment should always operate PD free.

The design of rotating apparatus creates inherent difficulties that make producing PD-free equipment impossible. The complex configuration of stator coil insulation, difficulties with the manufacturing impregnation process, and the problems fitting the coils within the stator slots can all create voids which lead to PD activity. Since PD in rotating apparatus is inevitable, the coil insulation employs mica tape which is very resistant to partial discharge damage. So, when assessing the condition of rotating apparatus, it becomes very important to monitor and trend PD activity over the course of many years as opposed to assessing the condition of other types of equipment insulation where periodic PD testing may suffice.

PD Sensors

Effective on-line PD testing of switchgear, cable, and transformer insulation generally involves taking regular (annual) spot checks using temporary sensors that are safely attached to grounded components of the apparatus. The main goal of this procedure is to ensure a PD-free apparatus.

In order to best monitor rotating apparatus, permanent coupling capacitors are connected to the ma- chine output bus during an outage. These sensors provide a standardized method to decouple the PD signals. Additional data can be obtained by using the RTD's that are embedded in the insulation as auxiliary PD measurement points. The RTD's act as antennas that can pick up the high frequency pulses associated with PD.

Valuable Data

As previously stated, the mica insulation is quite im- pervious to most PD activity. However, large amplitude discharges occurring from voids in the insulation or end winding contamination can lead to direct insulation failure.

This is just one category of problems that can be detected.

Since the rotating equipment PD activity is trended over many years, it is more economical to install permanent monitors than conducting regular spot surveys. These moni- tors (see Figure 3) accept other sensors for trending load, temperature, and humidity data along with the PD data so that correlations can be made that provide additional infor- mation for more precise diagnostics of the cause, location, and type of the PD activity occurring.

Insulation can also fail from the thermal or mechanical wear over the course of many years from overheating, ther- mal cycling and loose wedging. In these cases, increases in PD activity will show as a slow rise over time. This type of PD activity relates directly to the machine's overall thermal or mechanical condition, as the PD activity is not the pri- mary problem but is actually an indicator of the presence of other age-related problems.

Conclusion

Monitoring PD activity in rotating apparatus is very im- portant for increasing reliability and prolonging equipment life. All generators and critical motors should be monitored continuously and consideration should be given to perform- ing annual PD spot testing to the balance of plant medium voltage rotating apparatus.

Mr. Genutis received his BSEE from Carnegie Mellon University, has been a NETA Certified Technician for 15 years, and is a Certified Corona Technician. Don's technical training and education is comple- mented by twenty-five years of practical field and laboratory electrical testing experience. He is Vice President of the Group CBS Eastern U.S. Operations and is Technical Manager for their subsidiary, Circuit Breaker Sales & Service located in Central Florida.




Don A. Genutis is author of this article on High Voltage Testing.

Find more information about Partial Discharge Testing here.





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Calibration in the Cleanroom


The importance of particle counting, testing of HEPA filters, etc. is widely known, but how important is the calibration of the associated instrumentation within a cleanroom environment?

One of the most prevalent devices in a cleanroom environment is the Magnehelic gauge. These are used as an easy to read indicator for operators to confirm that the differential pressure between two rooms is as it should be, they are often used in conjunction with an alarm monitoring system. The question is, have yours been calibrated correctly though? In our experience gauges like this are checked and perhaps adjusted at 0Pa but that's it. Magnehelic gauges are known to be very accurate; however they still require more than a zero point calibration check. A full 5 point, rising and falling test is the most thorough calibration that can performed with these and many other pressure gauges.

UKAS Calibration companies are able to provided the knowledge and training to perform complete calibrations of any instrumentation within a cleanroom. This ensures that customers receive a complete package of cleanroom testing and validation as well as calibration.

Refering closely to the "Orange Guide" (The MHRA Rules and Guidance for Pharmaceutical Manufacturers and Distributors 2007) which states the following with regard to calibration, Equipment Section 3.14

"Measuring, weighing, recording and control equipment should be calibrated and checked at defined intervals by appropriate methods. Adequate records of such tests should be maintained."

The guide states the above for good reasons, some of which are identified below.

Differential pressure switch calibration

One example of a situation encountered by our engineers was in a plant room at a pharmaceutical site. The differential pressure switch across a bag filter had been set to alarm to the BMS at 240Pa to flag up the need to change the filter. However when our engineers calibrated this switch we found it to be switching at just 80Pa! The BMS interface was therefore prematurely flagging up this filter as being blocked. Discussions with the customer found that the particular filter in question had been changed more often than others. Thanks to our findings the faulty pressure switch was changed thus saving the customer any further unnecessary filter replacements, not to mention time and money.

AHU sensor calibration

Another area where calibration can aid in energy and money saving is within the Air Handling Units themselves. Correct calibration of temperature and relative humidity probes that control the heating, cooling, humidifying and dehumidifying can save energy. The outputs of the sensors control the amount of heating and cooling that is called for via the BMS and conflicting sensor outputs at various stages of the AHU can result in wasted energy from steam heating the air and chillers running unnecessarily to cool air. We have witnessed on several occasions systems that are both heating AND cooling at the same time.

Furthermore, sensor outputs must correspond with the condition that the sensor is measuring otherwise the error will be passed onto the BMS which will produce further errors. A situation could arise from this where your BMS system says that a room is being controlled at 21°C and your EMS says that the room is at 23°C. Offsets created by the calibration of the BMS sensors can eradicate these discrepancies to allow the system to be more easily manageable, more accurate and more reliable as an information source.

The most important instrumentation within a cleanroom is the environmental monitoring system (EMS). This should be a CFR21 Part 11 logging system monitoring several aspects of the room such as temperature, relative humidity, and the pressure between rooms. It is crucial that these are calibrated properly to help maintain regulatory compliance. This calibration ideally should be performed during a plant shutdown due to the amount of access required by the engineers and the disruption caused to the EMS system. To reduce confusion and any discrepancies, indicators and gauges within the cleanroom such as the aforementioned Magnehelic gauges should be calibrated to the same method as the EMS sensors.

In conclusion it has to be said that calibration of instrumentation in cleanrooms is very important from the logging system of the EMS to the air handling units supplying the air to the room. Each part of the system plays vital role in the efficient operation of a cleanroom.




John du Plessis represents Intech Process Solutions, specialist in UKAS Calibration Services and Testing including Cleanroom Calibration and Validation Services.





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2012年2月23日 星期四

Buying Guide For Your Central Humidifier


Humidity is a very important for every home. In fact, a balanced humidity is important for your family's health as well as their comfort. This means that lower levels of water vapor found in your home can increase static electricity and that higher humidity can also promote the growth of mildews and molds which are harmful to your health. Having said this, keeping the humidity in your home at balance is very important and this can only be achieved by using the right kind of machine to decrease humidity.

Central humidifiers are devices that allow you to have balanced moisture in your home. However, when buying one, you need to consider several things first in order to buy the right central humidifier for your home. Here is a buying guide for you to choose the right central humidifier for your home.

Choose the right model for your home

There are basically two types of these machines that you can use for your home. These include the drum type and the trickle type. You need to decide first which device you prefer the most.

• Drum Type: This has a rotating sponge-like surface that absorbs water as it rotates. An automatic humidity sensor regulates the humidity that is released by the entire humidifier. This device requires a lot of maintenance.
• Trickle Type: This allows fresh water to drip into the top of the alum panel in the device which in turn evaporates to form steam.

Choose the device that delivers quality but does not cost too much

Buying them expensive does not mean that you already got the best one in the market. It is still important to look for these machines, you may find centralized warm or cool mist humidifier, that are sold at cheaper prices but has the same quality as the best ones.

Choose the device that is easy to maintain

It is important to choose a product that does not require a lot of maintenance. However, when it comes to maintenance, you also need to make sure that the device that you bought is user-friendly.




Allan McDowell talks about improving homes with the best practices and benefits you get from air humidifiers, like the filterless humidifier reviews. At coolairmisthumidifiers.com, you'll get more of informative content.





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2012年2月14日 星期二

Going Green In Your Bathroom Renovations


Many homeowners have joined in on the campaign to help the environment and go green in their home renovations. If you're remodeling your home, you can do this too! It won't just help the environment it will also help make your home more efficient. This guide will help share how you can make your bathroom green, if you're renovating.

The first step in making your new bathroom greener is making it energy efficient. To keep the bathroom warm, go with radiant heating for the floors. Once radiant floors are turned off, they still retain heat.

There are also ways to keep water costs down in your bathroom renovations. Hot water bills do get quite costly, so use on-demand or even a solar hot water heater. This saves energy and will keep the bills down. You can also choose green lighting to help keep costs down.

We want to keep your bathroom looking good for many years, so make sure you use non-toxic materials. VOC's, which stand for volatile organic compounds are found in many bathroom vanities but should be avoided. They're mostly found in paint or finishes. Bamboo is a great product to use as it lasts for a long time.

Did you know you can use sustainable materials in your bathroom? It's very popular to use tile made from recycled glass. These tiles are often used on the floors and even walls of the bathroom. Bamboo and cork are extremely resistant to mold, which will keep it lasting for years.

It's important to have the proper ventilation in your bathroom, specifically through an exhaust fan. To help save energy, look for a fan with humidity sensors or timers. Materials like wallpaper can trap moisture, so stay away from wallpaper if there's a shower in the bathroom.

Save water! There is now low-water faucets for the sink and shower that will lower the amount of water used. You can also find toilets that save water. So much water is wasted, so this really makes a difference.

If everyone renovating their bathroom can keep these little things in mind, it will really make a difference. It will help you and it will help the environment!




Learn more on home renovations, including how to find the best wholesale tile and discount ceramic tile on this authors blog.





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2012年2月13日 星期一

Guide to Microwave Ovens


If you are someone who is looking for an accessory in the kitchen that can really help you in cooking your different meals quickly and easily, then microwave ovens are the right one for you.

To fully understand the essence of the said kitchen accessory, it is just necessary to know the concept that it uses to cook food. First of all, all of these microwave ovens are operating through a heat called microwave radiation that uses a 2500MHz frequency most of the time. The common components of these gadgets usually include a humidity sensor, a turntable that is rotating, digital clock and control keypad. Aside from these components, a vacuum tube known as a Magnetron is also included in these ovens along with a control circuit and an enclosure where the cooking of food happens.

There are just some facts you have to be aware of when using this kitchen appliance in your home. One of these is to not put any metallic containers or utensils inside the oven when you want to cook food. This is because the microwave radiation is reflected on these metallic materials and can cause an explosion or a fire. Instead of using metallic materials in cooking your food, it is more advisable that you use materials such as plastic, glass or ceramic because they do not absorb the microwave radiation. Another best thing for you to do when you want to use a container in a microwave oven is to first inspect the container properly and see if there are signs and/or indications that they can be used for the said type of oven.

Since there are many different types and prices of ovens, it is best that you first figure out what the role of a microwave oven will be in your home. After figuring this out, for sure you will have an easier time in determining the type of oven that will be most convenient for you to purchase. To give you a general idea, some of the most basic functions of these microwave ovens are defrosting automatically, cooking popcorn, keeping the food warm and delaying the cooking of food. There are also ovens which are large that are suitable for those people who will use it all the time like in a food business. There are also medium-sized ovens that are best used in a household.

The best way for you to know important information about the different types and functions of these ovens is by looking them up over the internet and reading about their different features. Another way by which you will be able to learn more about the different models of a microwave oven is by directly checking them out from a store. This way, you can ask directly from the sellers the different details you want to know; it will become easier for you to decide which one suits your needs and your household the best.

If you are planning to buy one, start your research today, after all it is never too early to be knowledgeable about things.




To read more about microwave ovens you may wish to visit the authors site. There you will find reviews and microwave oven ratings among other information.





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New Bosch Technology Saves Fuel


The auto industry is currently geared towards the reduction of fuel consumption as the global community becomes increasingly aware of the threat of global warming. Aside from car makers, other consumer industries have also taken steps to develop devices which will help vehicles save on fuel.

One of the leading makers of automotive components, Bosch, has recently developed yet another innovative technology which will improve fuel economy of vehicles. The Stuttgart, a Germany based company, recently announced the development of their Climate Control Sensor. This sensor essentially checks constantly the level of carbon dioxide inside a vehicle's cabin.

By monitoring the amount of carbon dioxide inside a vehicle, the device allows the air conditioning unit to optimize its performance. When the amount of carbon dioxide inside a vehicle's cabin surpassed the preset volume, the air conditioning unit will feed fresh air in side the vehicle. Then, the unit will automatically switch to recirculation mode which means that the air conditioner will not be using up much energy.

This technology saves fuel since it decreases the load on the vehicle's engine. The air conditioner's compressor is being powered by the engine and when it is turned off by the new sensor from Bosch, the engine will not need more fuel to burn to power the compressor.

The design of the Climate Control Sensor (CCS) is compact to save space in the vehicle. The technology uses infrared-based spectroscopy to determine carbon dioxide level inside a vehicle's compartment. The company known for their excellence in developing cutting edge automotive electronics designed the device to determine even minute level of carbon dioxide.

There is also a more advanced version of the sensor which not only checks the level of carbon dioxide but also measures the humidity and temperature inside the vehicle. This more advanced sensor further optimizes the cooling unit's performance. The use of the said devices according to Bosch engineers can save consumers by as much as ten percent on fuel consumption.

With this innovation, Bosch once again proved that they are the leading producer of advanced auto components which can complement standard auto parts like Nissan ignition coil and other engine operation related components. Aside from auto electronics, the company also provides automobile components like anti-lock braking system, which the company invented, fuel injection system, starters, and alternators. These components from Bosch are known to perform well and for their durability.

Durability is also a strong selling point of Bosch's industrial machinery, and hand tools sold all over the world. The company is focused in its automotive department as shown by the fact that half of their annual sales globally comes from their automotive technology.




Ryan Thomas is a native of Denver, Colorado. He grew up in a family of car afficionados. He now resides in Detroit where he owns a service shop and works part time as a consultant for a local automotive magazine.





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2012年2月12日 星期日

How To Select A Good Data Logger


A lot of technologies are already innovated and sold in the market. Most of the technologies are created to be useful and some are made to entertain consumers and make life easier. From among the thousands of technologies available, one very important technology is the Data logger. This device has various features and so it is used in almost anywhere.

Data loggers are used to record any data entered into a device. It has sensors built within the device and it helps record any activity that the machine does. The device can be also connected into computers, and just about any device that has is capable of inputting data.

There are so many settings where the device is very much needed to be used. That is because it can collect and record data in a specified time. It can be placed in an area and have it stay there for some period of time to collect and record data. The various data that the device collects or measures are: light, environmental temperature, electricity voltages, and others.

If one wants to know where the device is usually found, it can be found in weather stations. The device is used in the place to record changes in environmental temperature, wind pressure, humidity, etc. There are various sensors such as humidity sensors that are included in the technology. Other places where the device can be found are in schools, office and houses.

If one wants to own the technology for whatever use, one should start canvassing in the market before buying the device. It is because there are so many brands available and one should know which right brand to get. In order to determine the best device to buy, check below.

The initial thing to accomplish is to do a survey by asking around which brand of the technology is good. One can ask friends or acquaintances who own the device or check online. There are so many websites of various brand of the technology and one can read more information about the product and read feedbacks of previous clients. The feedbacks posted can help one decide whether the brand is to be trusted or not.

Another thing to do during canvassing is to do a comparison on the features of the device. The device is available in many brands and each brand may have special features added on the technology. Checking on the features will help one decide which device is better among the others.

The last thing to do is to check the product's price. There are cheap devices under a brand that makes quality products and if one is able to get a product, it is a good deal. One may also opt to get the expensive one because it is more sturdy and durable.

A Data Logger is very useful regardless of what industry you work in. Most of the devices have a storage system that's why it is capable of functioning on its own without any computer or gadget attached to it. If one wants to get the device for a specific use, it's important to be careful in selecting the right brand in order for one to get the best deal.




Welcome to Canada's source for sensors. With 30 years of experience providing technical solutions, we are the data logger leaders.





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How to Get Correct Air Conditioning and Ventilation Measuring in Homes


Air conditioning and ventilation engineering in homes is not an easy task to do for most common people. There's a lot of things you need to take in consideration to get all pieces of the puzzle together.

The first thing you need to do is to make 100% sure that the building have the capacity to provide sufficient ventilation in order to keep their occupants healthy and homes safe.

If you want to get all the variables right you must to go through careful planning and have lots of vital things in mind, such as high energy efficiency, hygiene and indoor air quality.

In order to be able to ideally adjust the air conditioning and ventilation systems, there's a lot of testing and adjusting to get it right according to the environment.

In all cases, make sure that ventilation systems are carefully sized to meet the right effective code requirements. Also that the equipment selected bears the HVI-Certified label and that it is installed to meet manufacturers requirements, this to assure long-term homeowner satisfaction.

The parameters required to measure air conditions are the following: flow, humidity, temperature, pressure, absolute pressure, lux, sound, CO2, volt and milliampere.

These parameters are all measurable using probes supplied by vendors like Testo, a wordwide manufacturer of professional measuring instruments for air condition and environment analysis. Testo devices all offer low energy consumption, high operational safety and long-term availability.

After eight years of continuously development Testo has produced a sensor meeting very high precision, long-term stability, response time and temperature tolerance.

Before approval for use by customers, the developers of these probes let the humidity sensor go through a thorough testing phase for more than a whole year.

Apart from their most reliable reference measuring instrument: Testo 400, Testo offers another highly precision multi-function meter for indoor air quality called Testo 435. This instrument will give you very precise numbers when testing and adjusting ventilation systems in buildings and other facilities, which is so important when you aim for satisfying results.




Testo is a world wide leading manufacturer of professional measurement instruments for air coditioning. One respected reseller of instruments like anemometer datalogger and other environment measuring instruments is the Swedish company Nordtec Instrument.





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2012年2月11日 星期六

One-Upping the TV Weather Guy


When you watch TV to get your weather, chances are the TV weatherman will get it right! Afterall, he (or she) gets their information directly from the US Weather Service (USWS) itself and Lord knows, they're never wrong...right? WRONG! I know of dozens of times when the USWS gave a faulty forecast, but guess what? I knew they were wrong as soon as the forecast was broadcast. How?

I've got a home weather station. You know, the kind that's loaded with weather instruments and gadgets that give you weather data? Yea, I've got one and I learned how to use it. I got all my weather lessons right off the Internet and a few short books. The info is easily available and the sites are very interesting to boot.

If you buy a weather station, I suggest you get the wireless kind. You put a battery into the sensors (which are sealed against moisture) once in a while and you just leave them outside in the weather. The sensors take the information that the instruments send them and they, in turn, send the information to the unit in the house, on my computer. I simply click on the application and there's all this great information about the weather right outside my house.

I get the temperature (indoors and outdoors), the humidity, the wind speed, wind direction, the atmospheric pressure and whether it's rising or falling, the relative humidity, any rainfall amounts and a current weather map of my area. So, how did I know that the TV weatherman was wrong? I knew there was a front headed my way simply by comparing the wind direction and speed, the atmospheric reading, which was falling rapidly and watching the weather map of the area west of me.

See, the winds in this month blow primarily from the south. Well, in a matter of minutes, the wind direction changed 180 degrees and the low that was to the north of our area began to move south, with the wind. The barometer told me that the low pressure ridge was approaching quickly and I knew the weather was going to get stormy. The TV guy was saying that we could expect sunny and fair weather the next day. Boy, was he wrong!

We got 2 inches of rain that night but I knew it was coming because of my weather station and the lessons about weather that I'd gotten online. If you want to start forecasting your own local weather and join up with thousands of like-minded "weather nuts" like me, get yourself some weather instruments, preferably, a nice wireless home weather station and join us for the fun. And believe me, it IS fun one upping the TV guys!




Gary Vaughn writes about weather, weather instruments, home weather stations and weather in general at http://slikvee5.wordpress.com/





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Dewpoint Meters and Their Uses


Dewpoint meters are devices which are specially designed in order to measure the temperature at which dew is formed. At a certain temperature, dew is formed. There is a constant biometric pressure of air which must be cooled in order for the water vapor to condense. This condensed vapor then turns into water and dew is formed. This entire process will take place when the dewpoint is right.

What is the dewpoint?

The dewpoint meters are used for measuring the temperature at which dew forms. Dew forms when a certain saturation point is met. This point is referred to as the dewpoint. However, when this point is below the freezing point, it is known as frost point since the water vapor then doesn't condense to water but it then changes to frost through deposition. The point at where this process would take place is referred to as dewpoint and is required to be measured in industries for several reasons.

What are these Meters Used for?

The dewpoint meters are used in order to determine when this particular point is met. The meter uses its sensors in order to detect the changes in humidity and temperature. dewpoint has been associated with relative humidity. The closer the point is to the current air temperature, higher would be the relative humidity that would be indicated. This device can measure the moisture level in gas or air samples through positive pressure. The accuracy that is provided by some of the newer devices is quite impressive. Many of these can read ppm moisture as well as read the dewpoint temperature in gas or air.

This point usually needs to be measured in field applications for painting situations. In fact, these devices are one of the most critical devices to be used for analysis to confirm conditions are correct before you can paint. Some of these devices are also used in various other situations and are generally referred to as dewcheck device. Dewpoint meters have versatile uses and has impressive features today.

Several of the new meters include integrated magnets which allow remote monitoring of data on steel substrates and have a memory which can store a large number of readings over days weeks or even months. They may even offer data output via Bluetooth and USB to PDAs and PCs. It is also important to ensure that you only invest in one that is waterproof and dustproof and that the sensors are fully sealed so as to ensure that it lasts for a long time. A hand held device would be easier to use, especially if it has an illuminated display. Most dewpoint meters today also record several climatic parameters such as wet bulb and dry bulb parameters, surface temperature as well as relative humidity.




Click dewpoint meters for more information





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2012年2月10日 星期五

Home Security System Supplies - Choose the Right Components For Your System


We all want our families to be safe and in the modern world that we live in today advances in technology can help keep our families safe and give us peace of mind. There are almost countless options when it comes to home security systems today. Choosing the various supplies and components you'll need will depend on the degree of protection you require and of course any budgetary restrictions. So let's talk about some of the home security system supplies available today.

There are security cameras, both wired and wireless. These cameras may act as a deterrent to any potential thieves. Wireless cameras are relatively easy to install and can be done by a do-it-yourselfer over the course of the weekend.

Every home security system will have magnetic contacts. These contacts are used to detect when a door or window is opened. One contact would be in the door itself the other contact being in the door jamb. When the connection is broken the alarm is triggered.

Motion detectors are also a common components in a home security system. For outdoor use, a motion detector can be used to turn on a light when someone approaches the house. They may also be used to sound a chime alerting you to the fact that someone is approaching the house. Indoors, motion detectors can cover any area that you wish. You may not have every door and window in your house equipped with magnetic contacts. If that is the case, those particular doors or windows can serve as access points that would not trigger an alarm. However, a motion detector can cover an area such as this.

Another important component in a home security system are glass break sensors. If someone were to break a window but the window frame remains intact it may not trigger an alarm equipped with magnetic contacts. In this case, the glass break sensor would detect the sound that breaking glass makes and trigger the alarm.

Other home security system supplies that are available today include smoked detectors, gas and carbon monoxide detectors, temperature and humidity sensors, photoelectric beam detectors, and more. The list of available components and features seems almost endless. It certainly is a good idea to equip your home with a security system but it's also a good idea to do your homework before getting started with the project.




Protecting your home and family is vitally important. Learn all you can about different home security options Educate yourself and keep your family safe. http://www.smart-home-security.info





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Features of Good Server Rack and Computer Server Racks


It is common for management in a smaller company to OK new servers and somehow forget they need to go somewhere. We get frantic calls daily from customers saying they need a server rack or cabinet for their new hardware.

This is where things can get a bit dicey. Many of today's servers are blade servers and they can be from 29-42 inches deep. They also run hot and are very noisy. One Network Manager said he thought he was sitting on the wing of a propeller driven plane it was so loud!

Since blade servers pull air from the front and blow it out the back, a quality server rack cabinet will require special venting for air flow. If you need a secure cabinet, the front and rear doors should be mesh or perforated. This allows you to lock the doors and still be able to see your hardware. Depending on your room, you may also want to install a fan for extra air movement. Many servers use mounting brackets that have a flange that fits in a square hole on the rackrails of a cabinet or rack. It is imperative that the cabinet you choose have this type of rackrail.

There are other types of server racks referred to as 4-post server racks. In most cases, they are a frame that has 2-sets of vertical square holed rackrails that adjust in depth. Some of the better 4-post racks can adjust from 26-42 inches deep. This is a very functional low cost way to put your hardware on.

Some Key things to consider when choosing a server rack are:

Depth of hardware including depth of cables attached
Do you need an open rack or enclosed locking cabinet
Is noise a concern for the location
Will you need a fan
Do you need blank panels to help direct airflow
Will you have special cabling applications
What type powerstrip, PDU, do you need
What is the ambient temperature for location
Do you need any temperature or humidity sensors
Will you be using a keyboard, monitor or KVM

As you can see, there are a lot of considerations to choosing the best server rack for your applications. A quality rack or cabinet can accommodate the above considerations. That being said, one of the biggest mistakes is buying a server rack cabinet that is not deep enough.




ISC has a large selection of computer racks, rackmount powerstrip and rackmount accessories. Their online catalog for server racks does a good job showing your options along with detailed description so you know exactly what the rack or cabinet can do.





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2012年2月9日 星期四

How to Buy the Cheapest and Best Dehumidifier


Dehumidifying a home or room can be a real challenge. This is especially true during winter months where opening windows is just not an option. Mold formation is one of the leading problems that come with high humidity levels, and it does not take much humidity for mold to form. In fact, at humidity rates of 65 percent or higher, mold can form. For those of you who may be suffering from asthma or any other respiratory related problems, a humidity rate of 50 percent or higher can make life uncomfortable. The point of all this is that if humidity is a problem in a room then it is time to seriously look into buying a dehumidifier. The following are some tips on how to buy a dehumidifier.

The first thing that needs to be considered is the size of the area where the dehumidifier is going to be used. The larger the room, then obviously the larger the humid air extraction capability it will need. This is especially true if the goal is reduce humidity levels below the 50 percent mark. Dehumidifiers are rated according a system called "pint." The pint number will decide the size of room it is ideal for. Most dehumidifiers made today will have built in sensors called humidistats which measure the humidity levels and operate accordingly. It will also have different speed settings as well. The following is a list of different pint numbers and the room size they are built for.

• 400 square feet -25 pint

• 800 square feet- 40 pint

• 1000 square feet- 50 pint

• 1400 square feet -70 to 80 pint

What needs to be remember here is that the above examples of pint size refers to homes or building that are not located near large bodies of water. The recommended thing to do for houses or buildings located near water is to double the capacity. So, a 400 square feet room would require at least 50 pint dehumidifier to have any useful impact, and so on. Apart from location, the next factor which needs to be taken into account is ceiling height. Ideally, 50 percent should be added to the pint number for rooms with ceilings as high as 10 feet. Rooms with ceilings measuring at 8 feet will only require a 25 percent increase in pint number.

Pint numbers represent the amount of humidity it will be able to extract from the air in a 24 hour time frame. Dehumidifiers for home will come with removal drip pans that need to be emptied every so often. If a dehumidifier is bought which is not big enough for a given area, then it will run continuously. This is not efficient in the long run. This in turn is why it makes more sense to install one that is big enough, even though it will cost a little more to purchase.




Vladimir Chekhlov, http://www.dehumidifiersforhome24.com/





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Data Loggers Leading the Way Into the Future


Data loggers are electronic instruments that record different kinds of data. They are often small machines run on battery power. The use of rechargeable batteries are very convenient with these devices. The great thing about these devices is that you can record information without having to be there to record the data. Although batteries might need to be changed on a regular basis. However these devices have the capacity to record data for many months at a time.

All of the above help to record important data that might be used for a variety of reasons depending on the data acquired. The majority of these devices use turn key data programming on a personal computer to utilise the logger and look at the data collected. Other types of data logger are general purpose designed to be connected to a wide variety of voltages and sensor types.

Two names commonly used together are data logging and data acquisition. However these are not the same and have very different historical backgrounds. Data loggers commonly have slower sample rates, typically the highest sample rate of 5 HZ could be considered to be too quick, yet it is on the slow side for a data acquisition system.

A Data logger is implicitly a stand-alone piece of equipment compared to the data acquisition system that has to remain connected to a computer to gather information. There is arguments over which one is best, but they both have pro's and cons. Each device offers something different depending on what you want to use it for.

Because the data-logger is a stand-alone device it has to have on-board memory. Occasionally this memory is very big to allow for many days, or even months, of recording that has been left unattended. The memory of this device might be battery operated static random access memory, flash memory or EEPROM. Data loggers have changed quite a lot since they were first Historically data loggers utilized magnetic tape, punched paper tape, or directly viewable records such as "strip chart recorders".

Data loggers commonly have built-in clocks whose published drift can be a crucial consideration when deciding what device to choose. The loggers come in many different forms from basic single-channel input to complicated multi-channel devices. Commonly, the most basic the tool the less programming flexibility. The more complex devices permit the user to carry out cross-channel computations. Also alarms created for predetermined conditions.

The latest data loggers can serve pages on the internet that permit many individuals to monitor a system remotely. A wireless data logger is a tool that can be solely electronic or have a microprocessor, it can also combine the two. Basically a wireless logger is a data logger that has a wireless link. No matter whether the information is digital, analogue or frequency depends completely on what the logger is designed for.

Recently a few manufacturers were beginning to provide output in XML format file information. This is a positive step forward for the business as up till now there has not been much compatibility with the data formats that were recorded. The future for data-logging is no doubt with the wireless kind and developments within this type. The future is broad and could bring about many new devices as well as applications for them.




If you are looking for data loggers or even calibration services for your company, look no further! We offer competitive rates and the largest selection of fine measurement and test tools.





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