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2012年9月18日 星期二

Data Logger A First Step To Quality Control


There are both negative and positive connotations in regards to the term data logger. Many seem to believe a logger is a bad thing. As if people are trying to spy on you, or get to your information. In a way a logger does get to your information, but most are used for good purposes.

When you get down to it a logger is a tool. Much like typing onto a screen, it is logging your data in a way. Many high tech pieces of equipment use loggers. The output is captured in data bases for further work, but this data is quite important. Certain multi million dollar pieces of equipment can be kept running with less expense by monitoring the output of these loggers.

Most major equipment, from air conditioning systems in large buildings, to heavy equipment, to manufacturing equipment have a variety of sensor throughout the machinery. It could be as simple as monitoring the power supply for a large computer. Sensor help to read even tens of thousands of a fluctuation in power, or tolerances. With these readings, replacement parts can be ordered ahead of time, and while normal maintenance happens, the parts get installed saving time and money on a production line.

In some higher calibrated equipment humidity is a major concern. It can easily affect efficiency and wear of an item. Humidity sensors play a vital role in adjustment and life of this kind of equipment, and can signal support personnel for deeper service when certain conditions are met.

When it comes down to a special drill press for circuit boards, or any fine tuned equipment, calibration service is very important. On some circuit boards for a computer, tolerances of less than a human hair are needed to the parts that get attached are precise and work right the first time. Calibration of a drill, or a robot to place those parts is beyond important.

It is quite frustrating to get a new cell phone, or some new electronics and have issues. Quality control should catch those issues prior them happening. Specialized test equipment helps in that role. Whether it be robotic or human operated, test equipment could be a simple fixture that powers up a monitor, a phone, or other product for special testing, or even down to individual components to ensure that a switch works within tolerances.

A data capture scheme can be a simple software or hardware device. This is where it can become negative also. Some loggers are never seen, you simply have no idea that information is being captured at all. Your company can use these, especially with sensitive info, or top secret clearances. It is rare to see some of this as the costs to monitor, and put the data to use is not a simple thing to do.

Overall these devices and programs are very important for the manufacturing world. The negative spying connotations aside, we use them every day. Even your voice mail is a logger of sorts, and we even delve deeper into the info to bring out meaning. The same thing happens in all types of equipment, even your car. That car's computer is a data logger, and helps keep everything running smooth.




Welcome to Canada's source for Calibration Service. With 30 years of experience providing technical solutions, we are the test equipment leaders.





This post was made using the Auto Blogging Software from WebMagnates.org This line will not appear when posts are made after activating the software to full version.

張貼者： 於 下午5:20 0 意見
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2012年9月14日 星期五

Sick Building Syndrome and Indoor Climate Control


The problem of high levels of CO2 in ambient air appears to be a modern one. Yet, this is not one of the new fads that crop up from time to time and then disappear again, never to be mentioned again. It is, indeed, a modern problem, caused by the improvements in building standards and especially window manufacture. These improvements, hailed as a triumph over the age-old problem of draughty buildings, have nevertheless created a new negative effect. Ventilation was never a matter for discussion in most cases, it happened naturally as the wind blew and the air in rooms was replaced on a regular basis. With the new, draught-proof buildings this no longer happened, particularly since central heating made it unnecessary to have an air flow for any reason. This has given birth to the concept of indoor climate control.

The result was stale air. Air that has been used and breathed and not replaced, seen as a rising concentration of carbon dioxide, not to mention humidity. These effects had a detrimental influence on the buildings, promoting the growth of mould and other unwanted plant life. This was not the only effect. Slowly, the level of days off for sickness rose and the quality of work sank in these newer or refurbished buildings, leading to something referred to as Sick Building Syndrome, since it appeared to affect everybody in one building. The causes were not known for a long time, but now it is recognised that this is a result of breathing stale air with a high concentration of carbon dioxide over an extended period. Studies have shown that a level of 1000 ppm carbon dioxide will reduce the ability to concentrate by about 30 %, a significant drop by any means.

The obvious solution to this problem of indoor climate control was ventilation, and ventilation or air-conditioning systems were installed in all of these buildings leading only to the next problem: the heating bills in winter rocketed and staff complained of stiff necks and other maladies. Sick Building Syndrome was still here, but in a different form. How to provide adequate ventilation without simply heating the environment in winter? The only viable solution is control of the ventilation to reduce the exchange of air to the minimum required to keep a healthy atmosphere in the rooms, which is where indoor climate control becomes an active instead of just a passive discipline.

The real problem is the carbon dioxide, which is best measured with a NDIR infrared sensor. These are available in one or two channel technology for CO2, but the single channel version is quite accurate and stable enough for this purpose today.

Older types of sensor used to drift, as do cheaply manufactured ones, but a good-quality single channel sensor today will remain stable over years, only requiring a reference point occasionally to set a relative zero point. Such infrared sensors for CO2 are now available from a number of manufacturers such as Madur Electronics in Austria. These come complete with an appropriate analogue output to allow the CO2 level to control the function of the ventilation system.

Industry standard for these control functions is the 0...10 V output, but there are other varieties in use. These can be readily accommodated in the construction or calibration of the system to ensure a high quality of indoor climate control. Perhaps we have finally seen the end to Sick Building Syndrome and can now enjoy the benefits of a controlled climate indoors, if not outdoors.




This post was made using the Auto Blogging Software from WebMagnates.org This line will not appear when posts are made after activating the software to full version.
張貼者： 於 晚上11:23 0 意見
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2012年9月10日 星期一

The Impact Of Moisture Analysers In Quality Control


For those individuals that are not acquainted with industrial processes and the importance of ensuring that the final product keeps up with the ever increasing and changing quality controls that have to be enforced, it may be quite interesting to learn that moisture analysers play an important role in most industries.

Before the tin of paint reaches the shelves of the warehouse, before the dog food bags is delivered to vet's and pet shops, before you can enjoy a package of potato chips or sip a delicious cup of Jamaican coffee or before the pharmacist is able to sell you that pain killer, the different manufacturers involved had to make a thorough control of the manufacturing process of the different products in order to be sure that the medicine, the coffee, the potato chips and the paint meets the quality standards set up by each and every industry. And in that control, moisture analysers are essential.

Some chemical components present in certain medicines are highly sensitive to excessive humidity and this is why labs and pharmaceutical facilities need to rely on humidity sensors in order to determine if the environment is too wet. If it is, then adjustments have to be made in order to prevent humidity from reducing or altering the healing properties of the chemical compounds.

Something similar occurs with the paint industry. In order to be able to provide great coverage, it is very important for the components used to make paint to be in a moisture balanced environment. If the environment is too wet or too dry, then paint may not adhere properly on to walls or the tints used may not deliver the desired color.


Food industry, both for humans and for pets, is also an important user of moisture analysers. They help manufacturers determine the most appropriate humidity level for the food product they are producing in order to ensure that they taste yummy and that they look and feel attractive to the eye and nose as well.

Moisture analysers are highly sensitive devices that can measure the humidity content of an item in order to allow operators at factories determine if any adjustment needs to be made. In general, factories rely on more than one humidity sensor depending on how complex their manufacturing process is. In each step, a sample is taken and weighed. Then it is introduced in the moisture analyser where it is dried up to determine its moisture content. Then the sample is weighed again and checked against the industry standards.




Eduard by Processsensors





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張貼者： 於 下午5:54 0 意見
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2012年9月1日 星期六

Embedded Control - Record Layouts Improve Database and RFID Sensor Testing


Software application designers and hardware application developers are working as teams to incorporate control-record layouts into end-to-end XML services for RFID networks. Using these newly formed XML tag sets made up of customized control-records has improved the design and development scenarios across diverse hardware platforms, operating systems, applications, and databases.

As software application developers begin to build RFID-and-sensor networks within key growth areas, it has become common place to witness recent deployments of control-record structures embedded in sensors and their supporting software. These control records contribute immensely to the major functions of any RFID sensor application including inputs, data-lookup and storage, interface programming and outputs.

These five major features are now incorporated into the application as a new and more efficient XML and database schema. This improved configuration has proven to meet growing demands to test multi-vendor RFID and sensor products for their ability to withstand extreme conditions. These conditions include excessive heat and cold, shock, humidity, vibration, altitude, pressure and all are reliably monitored using the new control-record layout approach.

The key design feature in the programming arrangement described in this article is the idea that an intermediate control record receives and distributes signals to and from the software and hardware sides of the full application. This nicely integrates selected signals from both spheres of operation and allows an interface to adapt dynamically to different device types. As new devices are attached and configured with the application, no appreciable interference is noticed in the originally attached devices.

Because the embedded layout of many types of devices can be addressed through the use of control records, new applications are provided with better XML testing languages. Additionally, this feature provides designers with the opportunity to introduce database simulators for a more accurate and dynamic portrayal of RFID and Sensor operation. This dynamic portrayal is added to the accumulated testing history and a better picture of performance emerges.

As RFID becomes more widely deployed, network reliability, security, and data integrity become increasingly critical. And for most companies, the task of ensuring those three things will be overwhelming and complex, especially across multiple hardware platforms and configurations and diverse supplier and partner networks and databases.

But because it is now feasible to virtually attach these control-record layouts to alleviate some of the major complexities associated with the required tests, any company can develop new products that may have been prohibitive in the past.




Tom Gruich is a professional database designer with 40 years experience in systems analysis and design of database software applications. For more database business mapping thoughts and design ideas please visit Database Solutions or his Smart Database website at => http://www.adaptcode.com





This post was made using the Auto Blogging Software from WebMagnates.org This line will not appear when posts are made after activating the software to full version.

張貼者： 於 下午4:08 0 意見
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2012年8月20日 星期一

Server Rack Monitoring For Temperature and Humidity Control


The server rack is being increasingly used these days to offer safe and manageable work environment. Now that servers have been reduced in size, techs can put many more in each server rack resulting in a tremendous heat load. This heat can build up fast creating a heat zone that can cause servers to shut down unexpectedly. One way to avoid this is have a system in place that monitors heat and humidity.

In order tackle this problem, server rack manufacturers have come up with sensors that come equipped with alarms. This is to ensure that the temperature in the server room does not rise above the danger level. These sensors can be built in to rackmount powerstrips or as a separate unit within the server racks. Depending on the sensors, users can be notified by alarm or anywhere in the world via email about heat and humidity factors. Bottom line, these type sensors can help prevent server damage and associated network problems.

These environmental sensors range from email alerts to indicator lights that blink as soon as the temperature reaches a preset level. This depends on the type of racks as well as individual manufacturers and user preference. It is also possible they can be customized per your specifications.

The advantage to having environmental sensors in your rack is instant notification that can allow you to shut down or cool down a server before major damage is done. Sensors that are part of Ethernet rackmount powerstrips can be accessed remotely for instant access to the problem.

Nowadays, there are varieties that also manage airflow and water at various locations, apart from controlling temperature and humidity. Most of these sensors are small and take up very little room in a rack cabinet.

With such mind boggling wide variety of options available in the market, it is really up to you as to which sensor alarm variety you would like to go for in your server rack. But whatever you choose, it is important to incorporate one of them to respond as fast as possible in an emergency situation.




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





This post was made using the Auto Blogging Software from WebMagnates.org This line will not appear when posts are made after activating the software to full version.

張貼者： 於 凌晨1:46 1 意見
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2012年5月22日 星期二

Embedded Control - Record Layouts Improve Database and RFID Sensor Testing


Software application designers and hardware application developers are working as teams to incorporate control-record layouts into end-to-end XML services for RFID networks. Using these newly formed XML tag sets made up of customized control-records has improved the design and development scenarios across diverse hardware platforms, operating systems, applications, and databases.

As software application developers begin to build RFID-and-sensor networks within key growth areas, it has become common place to witness recent deployments of control-record structures embedded in sensors and their supporting software. These control records contribute immensely to the major functions of any RFID sensor application including inputs, data-lookup and storage, interface programming and outputs.

These five major features are now incorporated into the application as a new and more efficient XML and database schema. This improved configuration has proven to meet growing demands to test multi-vendor RFID and sensor products for their ability to withstand extreme conditions. These conditions include excessive heat and cold, shock, humidity, vibration, altitude, pressure and all are reliably monitored using the new control-record layout approach.

The key design feature in the programming arrangement described in this article is the idea that an intermediate control record receives and distributes signals to and from the software and hardware sides of the full application. This nicely integrates selected signals from both spheres of operation and allows an interface to adapt dynamically to different device types. As new devices are attached and configured with the application, no appreciable interference is noticed in the originally attached devices.

Because the embedded layout of many types of devices can be addressed through the use of control records, new applications are provided with better XML testing languages. Additionally, this feature provides designers with the opportunity to introduce database simulators for a more accurate and dynamic portrayal of RFID and Sensor operation. This dynamic portrayal is added to the accumulated testing history and a better picture of performance emerges.

As RFID becomes more widely deployed, network reliability, security, and data integrity become increasingly critical. And for most companies, the task of ensuring those three things will be overwhelming and complex, especially across multiple hardware platforms and configurations and diverse supplier and partner networks and databases.

But because it is now feasible to virtually attach these control-record layouts to alleviate some of the major complexities associated with the required tests, any company can develop new products that may have been prohibitive in the past.




Tom Gruich is a professional database designer with 40 years experience in systems analysis and design of database software applications. For more database business mapping thoughts and design ideas please visit Database Solutions or his Smart Database website at => http://www.adaptcode.com





This post was made using the Auto Blogging Software from WebMagnates.org This line will not appear when posts are made after activating the software to full version.

張貼者： 於 清晨7:48 0 意見
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2012年5月20日 星期日

Server Rack Monitoring For Temperature and Humidity Control


The server rack is being increasingly used these days to offer safe and manageable work environment. Now that servers have been reduced in size, techs can put many more in each server rack resulting in a tremendous heat load. This heat can build up fast creating a heat zone that can cause servers to shut down unexpectedly. One way to avoid this is have a system in place that monitors heat and humidity.

In order tackle this problem, server rack manufacturers have come up with sensors that come equipped with alarms. This is to ensure that the temperature in the server room does not rise above the danger level. These sensors can be built in to rackmount powerstrips or as a separate unit within the server racks. Depending on the sensors, users can be notified by alarm or anywhere in the world via email about heat and humidity factors. Bottom line, these type sensors can help prevent server damage and associated network problems.

These environmental sensors range from email alerts to indicator lights that blink as soon as the temperature reaches a preset level. This depends on the type of racks as well as individual manufacturers and user preference. It is also possible they can be customized per your specifications.

The advantage to having environmental sensors in your rack is instant notification that can allow you to shut down or cool down a server before major damage is done. Sensors that are part of Ethernet rackmount powerstrips can be accessed remotely for instant access to the problem.

Nowadays, there are varieties that also manage airflow and water at various locations, apart from controlling temperature and humidity. Most of these sensors are small and take up very little room in a rack cabinet.

With such mind boggling wide variety of options available in the market, it is really up to you as to which sensor alarm variety you would like to go for in your server rack. But whatever you choose, it is important to incorporate one of them to respond as fast as possible in an emergency situation.




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





This post was made using the Auto Blogging Software from WebMagnates.org This line will not appear when posts are made after activating the software to full version.

張貼者： 於 下午6:35 1 意見
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2012年1月26日 星期四

Data Logger A First Step To Quality Control


There are both negative and positive connotations in regards to the term data logger. Many seem to believe a logger is a bad thing. As if people are trying to spy on you, or get to your information. In a way a logger does get to your information, but most are used for good purposes.

When you get down to it a logger is a tool. Much like typing onto a screen, it is logging your data in a way. Many high tech pieces of equipment use loggers. The output is captured in data bases for further work, but this data is quite important. Certain multi million dollar pieces of equipment can be kept running with less expense by monitoring the output of these loggers.

Most major equipment, from air conditioning systems in large buildings, to heavy equipment, to manufacturing equipment have a variety of sensor throughout the machinery. It could be as simple as monitoring the power supply for a large computer. Sensor help to read even tens of thousands of a fluctuation in power, or tolerances. With these readings, replacement parts can be ordered ahead of time, and while normal maintenance happens, the parts get installed saving time and money on a production line.

In some higher calibrated equipment humidity is a major concern. It can easily affect efficiency and wear of an item. Humidity sensors play a vital role in adjustment and life of this kind of equipment, and can signal support personnel for deeper service when certain conditions are met.

When it comes down to a special drill press for circuit boards, or any fine tuned equipment, calibration service is very important. On some circuit boards for a computer, tolerances of less than a human hair are needed to the parts that get attached are precise and work right the first time. Calibration of a drill, or a robot to place those parts is beyond important.

It is quite frustrating to get a new cell phone, or some new electronics and have issues. Quality control should catch those issues prior them happening. Specialized test equipment helps in that role. Whether it be robotic or human operated, test equipment could be a simple fixture that powers up a monitor, a phone, or other product for special testing, or even down to individual components to ensure that a switch works within tolerances.

A data capture scheme can be a simple software or hardware device. This is where it can become negative also. Some loggers are never seen, you simply have no idea that information is being captured at all. Your company can use these, especially with sensitive info, or top secret clearances. It is rare to see some of this as the costs to monitor, and put the data to use is not a simple thing to do.

Overall these devices and programs are very important for the manufacturing world. The negative spying connotations aside, we use them every day. Even your voice mail is a logger of sorts, and we even delve deeper into the info to bring out meaning. The same thing happens in all types of equipment, even your car. That car's computer is a data logger, and helps keep everything running smooth.




Welcome to Canada's source for Calibration Service. With 30 years of experience providing technical solutions, we are the test equipment leaders.





This post was made using the Auto Blogging Software from WebMagnates.org This line will not appear when posts are made after activating the software to full version.

張貼者： 於 晚上7:06 0 意見
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2012年1月20日 星期五

Wireless Electricity Monitoring and Control System With Monitoring Function of a Home Solar Plant


A home electricity energy monitor is an easy way to see how much electricity you're consuming - as you use it - and what it costs. It provides prompt, convenient feedback on electrical energy consumption. Some devices may also display cost of energy used, and estimates of greenhouse CO2 emissions in real time. It is also known as a "real time display". People who adopt home energy monitors tend to find that their energy usage drops by between 5 percent and 15 percent in the first year of using them. Various studies have shown such a reduction in home energy consumption.

A wireless smart electricity monitor is a device used to monitor electricity consumption, adopting the wireless technology. In a typical wireless electricity monitor configuration, a unit that measures energy output is connected to the electricity meter in a home meter box, and that unit transmits information about energy consumption wirelessly to a display unit. The display unit shows the amount of power being used, the cost of the power and the greenhouse gas emissions caused by the electricity being consumed. Some units also display other information such as ambient temperature and humidity.

Wireless electricity monitors are easier to use than wired electricity monitors because they allow users to place the display unit anywhere in their homes. This way, users can frequently check the amount of energy being used without having to walk to a meter or run wires through their homes. Wireless electricity monitors are usually battery-operated, though some units have direct current (DC) adapters that enable them to be plugged into wall power.

Most people who use a wireless electricity monitor do so to reduce energy consumption. Having a constant visual reminder of how much energy is being used at any given time, how much the energy costs and how much of an effect the energy use has on the environment can help people stay mindful of their energy use and remind them to turn off appliances when they aren't using them. The monitors can also be used to figure out how much energy particular machines and appliances are consuming so users can determine how they can best reduce their energy use.

Sometimes, a wireless electricity monitor only shows how much energy is currently being used, but many wireless electricity monitors also store usage data and enable users to review their daily, weekly and monthly energy use. This tracking ability can help users review how they're using electricity, stay motivated to continue using less electricity and develop strategies for reducing consumption. A wireless electricity monitor is not very expensive, and many users say they recoup the cost of the monitor in just a month or two by using less energy.

Some wireless electricity monitors also have the ability to connect to a personal computer. The transmitter unit can stream energy usage data to a device connected to the computer, usually through a universal serial bus (USB) port. Computer software that comes with the data receiver typically enables detailed electricity tracking and reporting.

More and more homeowners in the world have installed solar power system or wind micro generator in their homes to generate clean power, reduce the electricity consumption cost and protect the environment as well. Photovoltaic Solar Power is, in it's simplest definition, the energy created by converting solar energy into electricity using photovoltaic solar cells. Solar power cells are made out of materials known as semiconductors, usually silicon. A semiconductor has the properties of an insulator, but when exposed to light or heat is capable of conducting electricity.

The electricity energy monitoring and control system with home solar plant monitoring function works 2-way and is developed specially for households installed with home solar plant, providing a good solution for the home owners to monitor both the home electricity consumed in total and the energy produced by solar. Meanwhile, the system displays the balance between the consumption and production to the family members and provide wireless remote control of home electrical appliances when the family members want to respond to unsatisfactory balance data.

How the system works?

The clamp of one power transmitter is attached to the cable from your electricity meter. The current is then measured and transmitted wirelessly to a monitor with display screen that you can keep anywhere in your house. The clamp of the other power transmitter is attached to the cable from the solar power plant to measure its yield. In this case, the data for the consumption and solar production is attained respectively and the comparison is possible.

When the home electricity consumption is higher than the electricity production of home solar system or wind micro generator, the controller of the electricity control system provides an alarm warning, reminding the family members to act to reduce the power consumption.

The LCD screen of the controller display home power consumption data, production output by home solar system, balance data, cost data, history data. It also shows time and date.

The system supports up to 12pcs sensor plug sockets, that means it can wirelessly monitor and control up to twelve connected electrical appliances.

With this system, you can keep track of how your solar system is performing, how much money you are saving in electricity costs, and how much your system is benefiting the environment.

The wireless electricity monitoring and control system with Home Solar Plant monitoring function is consisted by 1pc controller with power adapter, 2pcs transmitters with sensor clamp, A number of sensor plug sockets and 1pc RJ45-USB data cable to provide computer link

* The controller receives data from the transmitters and sensor plug sockets, displays the real time and history information on its LCD screen and sends powering on/off instruction to the sensor plug sockets.

* 1pc of transmitter will be used to monitor the electricity output of the solar home plant, the other transmitter will be used to monitor the electricity consumption of the whole home.

* The sensor plug sockets detect the electricity consumption of connected electrical appliances. The sockets detect the energy consumption data and send it to the controller. The sockets can be controlled remotely and wirelessly by the controller to switch on/off the connected electrical appliances. One system can support up to 12pcs sensor sockets.

* The RJ45-USB data cable (available with software) serves to provide connection between the controller and the computer so that the user can view the real time data, the history data from the computer or remotely switch on/off electrical appliances.

We recommend you to view Sailwider's home solar monitoring system for more details.




Shenzhen Sailwider Electronics Co, Ltd is a high-tech company located in Shenzhen, China. Sailwider focus on latest technologies and develop practical and competitive products for the fields of electricity energy monitoring and control, automobile accessories, wireless communication, and electronics design and manufacturing.





This post was made using the Auto Blogging Software from WebMagnates.org This line will not appear when posts are made after activating the software to full version.

張貼者： 於 清晨7:03 1 意見
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2012年1月17日 星期二

Rackmount Powerstrips With Remote Outlet Control and Current Monitoring


Rackmount Powerstrips go a long way in making your IT equipment handling easy. Teamed with a server rack, they have nowadays become indispensable in large and small data centers as well as industrial applications. There are a large amount of varieties of rackmount powerstrips that come with added features. The latest is a unique variety that comes with built-in intelligence, integrated support for optional environment sensors, and web-based energy performance tracking capabilities among many others.

These type rackmount powerstrips are ideal for application areas where accurate and continuous power monitoring is required. They can help reduce energy costs and even include sensors that report heat and humidity levels that can aid in the efficient cooling resources used for server racks.

The integrated intelligence features in these rackmount powerstrips allow you to gather such factors as data on voltage, current, power factor, apparent power, active power, environmental temperature and humidity and so on. These can also help you to manage your data center much more efficiently. Many of these rackmount powerstrips have an LED display that can be read by onsite techs in addition to the remote monitoring feature.

Some of the powerstrips are equipped with ringing or 'blinking light' alerts that would let you know as soon as power consumption reaches the maximum level. Accordingly, you can take measures for proper rectification in your computer rack as well. Tracking the humidity level is another prerogative of intelligent powerstrips. When you consider the expense of servers and the cost associated with a server going down due to environmental factors or power overload, these power strips are a very inexpensive way to be notified of a potential problem.

If you are a fan of technological innovation and believe in making your contribution to the ecosystem then you should surely go for these powerstrips.




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





This post was made using the Auto Blogging Software from WebMagnates.org This line will not appear when posts are made after activating the software to full version.

張貼者： 於 中午12:56 0 意見
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2011年12月17日 星期六

Sick Building Syndrome and Indoor Climate Control


The problem of high levels of CO2 in ambient air appears to be a modern one. Yet, this is not one of the new fads that crop up from time to time and then disappear again, never to be mentioned again. It is, indeed, a modern problem, caused by the improvements in building standards and especially window manufacture. These improvements, hailed as a triumph over the age-old problem of draughty buildings, have nevertheless created a new negative effect. Ventilation was never a matter for discussion in most cases, it happened naturally as the wind blew and the air in rooms was replaced on a regular basis. With the new, draught-proof buildings this no longer happened, particularly since central heating made it unnecessary to have an air flow for any reason. This has given birth to the concept of indoor climate control.

The result was stale air. Air that has been used and breathed and not replaced, seen as a rising concentration of carbon dioxide, not to mention humidity. These effects had a detrimental influence on the buildings, promoting the growth of mould and other unwanted plant life. This was not the only effect. Slowly, the level of days off for sickness rose and the quality of work sank in these newer or refurbished buildings, leading to something referred to as Sick Building Syndrome, since it appeared to affect everybody in one building. The causes were not known for a long time, but now it is recognised that this is a result of breathing stale air with a high concentration of carbon dioxide over an extended period. Studies have shown that a level of 1000 ppm carbon dioxide will reduce the ability to concentrate by about 30 %, a significant drop by any means.

The obvious solution to this problem of indoor climate control was ventilation, and ventilation or air-conditioning systems were installed in all of these buildings leading only to the next problem: the heating bills in winter rocketed and staff complained of stiff necks and other maladies. Sick Building Syndrome was still here, but in a different form. How to provide adequate ventilation without simply heating the environment in winter? The only viable solution is control of the ventilation to reduce the exchange of air to the minimum required to keep a healthy atmosphere in the rooms, which is where indoor climate control becomes an active instead of just a passive discipline.

The real problem is the carbon dioxide, which is best measured with a NDIR infrared sensor. These are available in one or two channel technology for CO2, but the single channel version is quite accurate and stable enough for this purpose today.

Older types of sensor used to drift, as do cheaply manufactured ones, but a good-quality single channel sensor today will remain stable over years, only requiring a reference point occasionally to set a relative zero point. Such infrared sensors for CO2 are now available from a number of manufacturers such as Madur Electronics in Austria. These come complete with an appropriate analogue output to allow the CO2 level to control the function of the ventilation system.

Industry standard for these control functions is the 0...10 V output, but there are other varieties in use. These can be readily accommodated in the construction or calibration of the system to ensure a high quality of indoor climate control. Perhaps we have finally seen the end to Sick Building Syndrome and can now enjoy the benefits of a controlled climate indoors, if not outdoors.




This post was made using the Auto Blogging Software from WebMagnates.org This line will not appear when posts are made after activating the software to full version.
張貼者： 於 凌晨4:11 0 意見
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2011年12月8日 星期四

The Impact Of Moisture Analysers In Quality Control


For those individuals that are not acquainted with industrial processes and the importance of ensuring that the final product keeps up with the ever increasing and changing quality controls that have to be enforced, it may be quite interesting to learn that moisture analysers play an important role in most industries.

Before the tin of paint reaches the shelves of the warehouse, before the dog food bags is delivered to vet's and pet shops, before you can enjoy a package of potato chips or sip a delicious cup of Jamaican coffee or before the pharmacist is able to sell you that pain killer, the different manufacturers involved had to make a thorough control of the manufacturing process of the different products in order to be sure that the medicine, the coffee, the potato chips and the paint meets the quality standards set up by each and every industry. And in that control, moisture analysers are essential.

Some chemical components present in certain medicines are highly sensitive to excessive humidity and this is why labs and pharmaceutical facilities need to rely on humidity sensors in order to determine if the environment is too wet. If it is, then adjustments have to be made in order to prevent humidity from reducing or altering the healing properties of the chemical compounds.

Something similar occurs with the paint industry. In order to be able to provide great coverage, it is very important for the components used to make paint to be in a moisture balanced environment. If the environment is too wet or too dry, then paint may not adhere properly on to walls or the tints used may not deliver the desired color.


Food industry, both for humans and for pets, is also an important user of moisture analysers. They help manufacturers determine the most appropriate humidity level for the food product they are producing in order to ensure that they taste yummy and that they look and feel attractive to the eye and nose as well.

Moisture analysers are highly sensitive devices that can measure the humidity content of an item in order to allow operators at factories determine if any adjustment needs to be made. In general, factories rely on more than one humidity sensor depending on how complex their manufacturing process is. In each step, a sample is taken and weighed. Then it is introduced in the moisture analyser where it is dried up to determine its moisture content. Then the sample is weighed again and checked against the industry standards.




Eduard by Processsensors





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2011年12月6日 星期二

Embedded Control - Record Layouts Improve Database and RFID Sensor Testing


Software application designers and hardware application developers are working as teams to incorporate control-record layouts into end-to-end XML services for RFID networks. Using these newly formed XML tag sets made up of customized control-records has improved the design and development scenarios across diverse hardware platforms, operating systems, applications, and databases.

As software application developers begin to build RFID-and-sensor networks within key growth areas, it has become common place to witness recent deployments of control-record structures embedded in sensors and their supporting software. These control records contribute immensely to the major functions of any RFID sensor application including inputs, data-lookup and storage, interface programming and outputs.

These five major features are now incorporated into the application as a new and more efficient XML and database schema. This improved configuration has proven to meet growing demands to test multi-vendor RFID and sensor products for their ability to withstand extreme conditions. These conditions include excessive heat and cold, shock, humidity, vibration, altitude, pressure and all are reliably monitored using the new control-record layout approach.

The key design feature in the programming arrangement described in this article is the idea that an intermediate control record receives and distributes signals to and from the software and hardware sides of the full application. This nicely integrates selected signals from both spheres of operation and allows an interface to adapt dynamically to different device types. As new devices are attached and configured with the application, no appreciable interference is noticed in the originally attached devices.

Because the embedded layout of many types of devices can be addressed through the use of control records, new applications are provided with better XML testing languages. Additionally, this feature provides designers with the opportunity to introduce database simulators for a more accurate and dynamic portrayal of RFID and Sensor operation. This dynamic portrayal is added to the accumulated testing history and a better picture of performance emerges.

As RFID becomes more widely deployed, network reliability, security, and data integrity become increasingly critical. And for most companies, the task of ensuring those three things will be overwhelming and complex, especially across multiple hardware platforms and configurations and diverse supplier and partner networks and databases.

But because it is now feasible to virtually attach these control-record layouts to alleviate some of the major complexities associated with the required tests, any company can develop new products that may have been prohibitive in the past.




Tom Gruich is a professional database designer with 40 years experience in systems analysis and design of database software applications. For more database business mapping thoughts and design ideas please visit Database Solutions or his Smart Database website at => http://www.adaptcode.com





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2011年12月5日 星期一

Server Rack Monitoring For Temperature and Humidity Control


The server rack is being increasingly used these days to offer safe and manageable work environment. Now that servers have been reduced in size, techs can put many more in each server rack resulting in a tremendous heat load. This heat can build up fast creating a heat zone that can cause servers to shut down unexpectedly. One way to avoid this is have a system in place that monitors heat and humidity.

In order tackle this problem, server rack manufacturers have come up with sensors that come equipped with alarms. This is to ensure that the temperature in the server room does not rise above the danger level. These sensors can be built in to rackmount powerstrips or as a separate unit within the server racks. Depending on the sensors, users can be notified by alarm or anywhere in the world via email about heat and humidity factors. Bottom line, these type sensors can help prevent server damage and associated network problems.

These environmental sensors range from email alerts to indicator lights that blink as soon as the temperature reaches a preset level. This depends on the type of racks as well as individual manufacturers and user preference. It is also possible they can be customized per your specifications.

The advantage to having environmental sensors in your rack is instant notification that can allow you to shut down or cool down a server before major damage is done. Sensors that are part of Ethernet rackmount powerstrips can be accessed remotely for instant access to the problem.

Nowadays, there are varieties that also manage airflow and water at various locations, apart from controlling temperature and humidity. Most of these sensors are small and take up very little room in a rack cabinet.

With such mind boggling wide variety of options available in the market, it is really up to you as to which sensor alarm variety you would like to go for in your server rack. But whatever you choose, it is important to incorporate one of them to respond as fast as possible in an emergency situation.




ISC has a large selection of server rack, computer rack and rackmount accessories. Their online catalog for rackmount powerstrips 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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