An infrared thermometer is a measuring instrument that detects the amount of infrared energy radiated from the surface of a material using an infrared sensor and measures the surface temperature of the material based on that energy. The incident infrared energy on a material, as shown in the diagram, can be categorized into three cases: absorption… Continue reading AD-5635 What is Emissivity？
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AD-5635 How to set the emissivity
Accurate emissivity must be set in order to accurately measure the temperature of the material surface with a radiation thermometer. For that purpose, it is necessary to obtain the emissivity of the material, and there are three methods. 1. Compare with a contact thermometer (see diagram below) The object to be measured that has been… Continue reading AD-5635 How to set the emissivity
AD-5635 The relationship between the distance & measurement range (D:S).
The ratio between the distance to the measurement target (D: Distance) and the diameter of the measurement area (S: Spot size) in an infrared thermometer is referred to as the D:S ratio. As the distance to the measurement target increases, the measurement range of an infrared thermometer becomes larger. Each product has a specific D:S… Continue reading AD-5635 The relationship between the distance & measurement range (D:S).
AD-5635 Advantages and Disadvantages of Contact and Non-Contact Thermometers Contact Thermometers:
Temperature measurement devices are broadly divided into two types: non-contact (infrared) thermometers and contact thermometers. Each type, non-contact and contact thermometers, has its own advantages and disadvantages. The following is a comparison table between non-contact and contact thermometer. Non-contact (infrared) thermometer. Contact thermometer 【Advantage】 【Disadvantage】 Minimizing the influence of heat transfer from the thermometer to… Continue reading AD-5635 Advantages and Disadvantages of Contact and Non-Contact Thermometers Contact Thermometers:
AD-5635 Measuring Temperature of Water and Glass through Infrared Thermometers
Can temperatures be measured through water or glass using an infrared thermometer? Water, being transparent and colorless, might initially seem to have high transmittance and make temperature measurement impossible. However, in reality, water has a high emissivity of 0.98, making it possible to measure surface temperatures using a typical infrared thermometer. Reference： What is Emissivity? ）… Continue reading AD-5635 Measuring Temperature of Water and Glass through Infrared Thermometers