How to deal with the problem of high temperature?
1: There is no normal estimation of the temperature of the object being tested.
2: The target emissivity is much higher than expected or the emissivity adjustment is incorrect.
3: The size of the measured target spot is too small.
4: There is too much reflection interference from the background heat source.
5: Selection error, incorrect analysis of the measurement band used by the target being tested.
6: Lead noise caused by strong magnetic fields or incorrect selection of interconnecting cables.
7: The lens or window is too blurry.
8: The incorrect grounding wire of the cable resulted in no shielding.
If the above problem occurs, we can choose other temperature measuring devices for comparison temperature measurement. If the second problem causes it, we can reset the emissivity and lower it. If it is caused by the third problem, we need to adjust the distance measurement target. If it is caused by the fourth problem, the solution is to block the light. If it is caused by the fifth problem, we need to choose the appropriate model again. If it is caused by the sixth problem, electromagnetic interference protection is required. If it is caused by the seventh problem, please replace the lens or window. If it is caused by the eighth problem, reconnect the wires and test again to solve the problem. The above are 8 temperature problems that often occur during temperature measurement, hoping to bring help to everyone.
How to determine the distance coefficient of an infrared thermometer?
The distance coefficient is determined by the ratio of D: S, which is the ratio of the distance D between the thermometer probe and the target to the diameter of the measured target. If the thermometer must be installed far away from the target due to environmental conditions and needs to measure small targets, a high optical resolution thermometer should be selected. The higher the optical resolution, i.e. increasing the D: S ratio, the higher the cost of the thermometer. The range of Raytek infrared thermometer D: S ranges from 2:1 (low distance coefficient) to over 300:1 (high distance coefficient). If the thermometer is far away from the target and the target is small, a thermometer with a high distance coefficient should be selected. For a fixed focal length thermometer, the minimum position of the light spot is at the focal point of the optical system, and the light spot will increase near and far from the focal point. There are two distance coefficients. Therefore, in order to accurately measure temperature at distances close to and far from the focus, the size of the measured target should be larger than the size of the light spot at the focus. The zoom thermometer has a minimum focus position that can be adjusted based on the distance to the target. Increasing D: S reduces the received energy. Without increasing the receiving aperture, it is difficult to increase the distance coefficient D: S, which increases the instrument cost.
