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Infrared Thermometers

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Infrared ThermometersInfrared thermometers are special type of thermometer used to measure the temperature using infrared radiations emitted from objects. They are called non-contact thermometers due to the ability of the device to measure the temperature from a distance. Sometimes they are also called laser thermometers if a laser is used to help aim the thermometer. They are also known as radiation pyrometer, optical pyrometer or simply as infrared radiation thermometers.

Features to Look for While Buying Infrared Thermometers
If you are looking to purchase a technological product, it is always nice to have an idea about the most current available in the market. Technology keeps changing so quickly that deciding on a product such as a infrared thermometer may require some probe. Here we are providing some useful tips, which may come handy to you prior to buying a infrared thermometer :

Unique Advantages of Infrared Thermometers
Infrared thermometers come handy in circumstances where thermocouples or other probe type sensors cannot be used or do not produce precise data for different reasons. It is also useful in situations :
  • Where the object to be measured is moving.
  • Where the object is surrounded by an electromagnetic field, as in induction heating.
  • Where the object is contained in a vacuum or other controlled atmosphere.
  • Where a fast response is required.
How Do Infrared Thermometers Work?
Infrared thermometers calculate the amount of thermal electromagnetic radiation (infrared radiation) emitted from the object. By knowing the emissivity of the object and the amount of infrared energy emitted by the object, the object's temperature can be determined. With the help of infrared thermometers, temperatures of the objects placed in hazardous or hard-to-reach places or other situations can be determined.

Basic Design of Infrared Thermometers
The most common design of a IR thermometer consists of a lens to focus the infrared energy on to a detector. The detector changes the energy to an electrical signal that can be shown in units of temperature after being corrected for ambient temperature variation. This configuration helps measuring the temperature from a distance without contact with the object.

Applications of Infrared Thermometers
Infrared thermometers have found a wide range of applications in various types of laboratories specially in chemistry laboratories and research centers. Infrared thermometers are used for numerous industrial applications as well. They are used for many household applications.
Classification of Infrared Thermometers
On the basis of principle of operation, Infrared thermometers can be classified in a number of groups :


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