Advantages and disadvantages of infrared thermometer and precautions for use
1. Non contact measurement: It does not require contact with the interior or surface of the measured temperature field, so it will not interfere with the state of the measured temperature field, and the thermometer itself is not damaged by the temperature field.
2. Wide measurement range: As it is a non-contact temperature measurement, the thermometer is not in a high or low temperature field, but works
Under normal temperature or temperature measurement conditions allowed by the thermometer. In general, it can measure negative tens of degrees to over 3000 degrees.
3. Fast temperature measurement speed: i.e. fast response time. As long as the infrared radiation of the target is received, the temperature can be set in a short period of time.
4. High accuracy: Infrared temperature measurement does not damage the temperature distribution of the object itself like contact temperature measurement, so the measurement accuracy is high.
5. High sensitivity: As long as there is a small change in the temperature of an object, the radiation energy will change significantly, making it easy to measure. It can perform temperature measurement and temperature distribution measurement of small temperature fields, as well as temperature measurement of moving or rotating objects. Long usage and lifespan.
Disadvantages of Infrared Thermometers
1. Easily affected by environmental factors (such as ambient temperature, dust in the air, etc.)
2. The temperature reading of bright or polished metal surfaces has a significant impact
3. Limited to measuring the external temperature of the object, not convenient for measuring the temperature inside the object and in the presence of obstacles
3, Precautions for using infrared thermometer
1. It is necessary to accurately determine the emissivity of the object being tested;
2. Avoid the influence of high-temperature objects in the surrounding environment;
For transparent materials, the ambient temperature should be lower than the temperature of the object being measured;
4. The thermometer should be vertically aligned with the surface of the object being measured, and under no circumstances should the angle exceed 30 ℃
5. Can be used for temperature measurement on bright or polished metal surfaces, cannot be measured through glass;
6. Correctly select the following distance coefficient, and the target diameter must fill the field of view;
If the infrared thermometer suddenly experiences an ambient temperature difference of 20 ℃ or higher, the measurement data will be inaccurate. After the temperature is balanced, the measured temperature value will be taken.
