Difference between online and handheld infrared thermometers

Jan 16, 2025

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Difference between online and handheld infrared thermometers

 

Online infrared thermometer is an effective tool for detecting and diagnosing electronic equipment faults. There are various types of fixed infrared thermometers, and different series play important roles in their respective industries. The main performance indicators of fixed infrared thermometers include spectral response, response time, repeatability, and emissivity. Fixed infrared thermometers are used in the glass and ceramic industry, paper and packaging industry, various kiln temperature measurement applications, and chemical industry to measure the temperature of instruments and meters, in order to detect the operating status of instruments and ensure their normal operation.


Online infrared thermometers are mostly used for online temperature measurement in industrial production sites, which measure the temperature of a certain link in the production line in real time and transmit/display it in the control room, and even directly participate in closed-loop control. Such thermometers generally require stability and reliability for long-term use. Handheld infrared thermometer is a type of portable infrared thermometer, which is compact and easy to carry. The difference between the two types of infrared thermometers lies in their usage environment and temperature measurement accuracy. Handheld infrared thermometers are easy to carry and can be used in indoor and outdoor working environments, without being limited by the environment or location. However, compared to online infrared thermometers, their temperature measurement accuracy is slightly lower. Online infrared thermometers are larger in size than handheld thermometers, making them difficult to move and limited by the usage location. However, they have higher temperature measurement accuracy and can also compare and analyze the measured temperature online. This is something that handheld thermometers do not have, and of course, the price of online infrared thermometers is also higher than handheld thermometers. With a portable heat display system, maintenance personnel can identify potential or existing issues. For example, overheating of engine coil windings, tight cooling fins on transformers, capacitor contacts, and heat accumulation in the cylinder head of compressors. Any problem that arises is accompanied by an increase in temperature, or the temperature curve is completely different from the surrounding temperature

 

3 IR thermometer

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