Handheld infrared thermometer selection

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/ 2019-07-17 / News

1. Understand the measurement temperature range

The temperature measurement range is the most important performance indicator of the infrared thermometer. Each type of thermometer has its own specific temperature range, according to Measure the demand, select the appropriate range of infrared thermometers.

2. Understand the measurement accuracy and minimum resolution

Measurement accuracy is the only indicator to ensure the accuracy of the measurement, and is also a key indicator to determine the performance of the infrared thermometer. Resolution is the smallest measure of a particular temperature.

3, understand the emissivity

The material surface and color of the surface of the object being measured are different, and its ability to emit infrared energy is different. Through emissivity adjustment, measurement errors due to materials can be reduced.

4. Understand the target size

For a monochrome thermometer, when measuring temperature, the target is measured. The area should be filled with the field of view of the thermometer. For colorimetric thermometers, when the target is small and does not fill the field of view, it will not affect the measurement results.

5, understand the distance coefficient ratio (D:S)

refers to the ratio of the distance D between the infrared thermometer to the target and the measured spot diameter S. If you are away from the target with a small measurement diameter, you should select a high ratio of infrared temperature measurement. The higher the distance coefficient ratio, the higher the cost of the infrared thermometer.

6. Understanding the wavelength range

The emissivity and surface characteristics of the target material determine the thermometer The corresponding wavelength of the spectrum, for high reflectivity alloy materials, has a low or varying emissivity.

7. Understand the response time

The choice of the response time of the infrared thermometer should be The situation of the target to be measured is adapted, and the response time is determined mainly according to the moving speed of the target and the temperature change speed of the target.

8. Understand environmental conditions

The environmental conditions in which the thermometer is located have a great influence on the measurement results and should be considered and properly resolved. Otherwise, the temperature measurement accuracy will be affected or even caused. damage.

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