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Temperature controllers are used to keep the temperature stable at any given situation. Whenever the product has to be heated or cooled or both have to be done, the temperature has to be controlled at the set level irrespective of the environment around the process. Be it your car heater or a blast furnace in an industry a temperature controller is used.

Basically these controllers operate in 2 forms- the open loop wherein you would have to constantly monitor the temperature output or the sophisticated closed loop wherein the desired temperature is maintained; despite the outside environment the set temperature is always maintained.Temperature controllers are used in a simple form in household items such as heaters, refrigerators, etc. They are more complex in industries involved in manufacturing or research, these industries include plastic, Food, healthcare, packaging and in boilers and furnaces.

There are several points which have to be considered while selecting a temperature controller- firstly whether the sole aim is to keep the temperature at the fixed value. Secondly it is helpful if it has automatic switching and alarm output. Thirdly, some controllers also can be routed through computers so that there is more efficient monitoring of temperature. Fourthly, sensitivity of this device should also be checked. These are few general points which are recommended, however, based on the nature of the industry the requirements may vary.

However for more comparisons and characteristics of temperature controllers, one can access the internet, there you not only find the latest and best equipment, there is also enough information for you to make the right choice.

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Previous Post : Factors to be concerned in the process heating

While considering process heating in an industry there are a few basic factors to be taken into consideration before selecting the equipment for the process.Firstly the material concerned, temperature at which it has to be heated/cooled, the maximum temperature etc. has to be ascertained. Then the cost involved, power consumption and the required accuracy level is to be determined. The Watt density and sheath material (copper, steel, etc) has to be determined, actually that would depend on the material and the kind of heater used.

Thirdly, the heater type has to be determined, whether you would choose from conduction i.e. Cast heaters, immersion, etc. or convection or the latest infrared halogen and ultraviolet lights. There are quite a few types to choose from. Fourthly a proper temperature sensor has to be selected this would depend on the kind of environment it would be used in whether it would be a volatile area or high temperature one. Finally the kind of temperature control has to be chosen two best choices would be whether it is open loop or a closed loop one.

Once these basics decision are made, thought has to be given to decrease operating and maintenance costs, better stability and long life. Normally process heating changes are undertaken if the equipment in place is not giving the desired result or the process is a new one. So the best option would be to design a process according to the conditions of the industry and its requirements. So getting a tailor made solution to cater to your process heating it the best option.

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