Three aspects of choosing an infrared thermometer
Performance indicators, such as temperature range, spot size, working wavelength, measurement accuracy, response time, etc.; environmental and working conditions, such as ambient temperature, window, display and output, protection accessories, etc.; other options, such as ease of use, maintenance And calibration performance and price, etc., also have a certain impact on the choice of thermometer.
Determine the temperature measurement range:
The temperature measurement range is a more important performance index of the thermometer. Each type of infrared thermometer has its own specific temperature range. Therefore, the user's measured temperature range must be considered accurately and comprehensively, neither too narrow nor too wide. According to the law of blackbody radiation, in the short-wave band of the spectrum, the change of radiation energy caused by temperature will exceed the change of radiation energy caused by emissivity error. Therefore, it is better to use short-wave as much as possible when measuring temperature.
Determine optical resolution (distance and sensitivity):
The optical resolution is determined by the ratio D to S, which is the ratio of the distance D between the pyrometer to the target and the diameter S of the measurement spot. If the thermometer must be installed far away from the target due to environmental conditions, and a small target must be measured, a thermometer with high optical resolution should be selected. The higher the optical resolution, i.e. increasing the D:S ratio, the more expensive the pyrometer will be.
Simple operation and convenient use:
Infrared thermometers should be intuitive, easy to operate, and easy to be used by operators. Among them, portable infrared thermometers are small, light, and portable temperature measuring instruments that integrate temperature measurement and display output. The display panel can display temperature and output various temperature information, and some can be operated by remote control or computer software program. In the case of harsh and complex environmental conditions, a system with a separate temperature measuring head and display can be selected for easy installation and configuration. The signal output form matching the current control equipment can be selected.
Calibration of infrared radiation thermometers:
Infrared thermometers must be calibrated to correctly display the temperature of the measured object. If the temperature measurement of the thermometer used is out of tolerance during use, it needs to be returned to the manufacturer or the maintenance center for re-calibration.
