Eight Key Points for Purchasing Infrared Thermometers
1. Measuring temperature range
The temperature measurement range is an important performance indicator of infrared thermometers, and each model of thermometer has its own specific temperature measurement range. Choose the appropriate range of infrared thermometer according to the measurement needs.
2. Measurement accuracy and minimum resolution
Measurement accuracy is the only indicator to ensure the accuracy of measurement, and it is also a key indicator to determine the performance of infrared thermometers. Resolution is the minimum measure used to measure a specific temperature.
3. Emissivity
The ability to emit infrared energy varies depending on the material and color of the surface of the object being tested. By adjusting the emissivity, measurement errors caused by materials can be reduced.
4. Target size
For monochrome thermometers, the area of the measured target should fill the thermometer's field of view during temperature measurement. For colorimetric thermometers, when the target being measured is small and does not fill the field of view, it will not affect the measurement results.
5. Distance coefficient ratio (D: S)
The ratio of the distance D between the infrared thermometer and the target to the diameter S of the measurement spot. When moving away from targets with small measurement diameters, a high ratio infrared thermometer should be selected. The higher the distance coefficient ratio, the higher the cost of the infrared thermometer.
6. Wavelength Range
The emissivity and surface characteristics of the target material determine the corresponding wavelength of the thermometer's spectrum. For high reflectivity alloy materials, there is a low or varying emissivity.
7. Response time
The selection of response time for infrared thermometers should be adapted to the situation of the target being measured, and the determination of response time is mainly based on the target's movement speed and temperature change speed.
8. Environmental conditions
The environmental conditions in which the thermometer is located have a significant impact on the measurement results and should be considered and appropriately addressed, otherwise it may affect the temperature measurement accuracy and even cause damage.
The above points should be taken into consideration when making a purchase, hoping that this book can help you find the right product.
