Common faults and solutions of online infrared thermometers
Common faults and solutions of online infrared thermometers. Industrial production is inseparable from precision instrument online thermometers to monitor the temperature of objects. In-line infrared thermometers are very mature and very common in factories. Infrared thermometers are usually used in conjunction with instruments, and often appear in the form of transmitters, that is, the signals output by the infrared thermometers are processed by related circuits and converted into some standard signal outputs, such as 0-5V voltage, or 4- -20mA output. There may be some glitches in support usage. The following are several common fault symptoms and their solutions:
1: When the temperature of the measured medium rises or falls, the output of the online infrared thermometer remains unchanged. This situation is mostly caused by the sealing of the online infrared thermometer. It may be that the online infrared thermometer is not tightly sealed, or the infrared thermometer accidentally welded a small hole during the welding process. This situation generally needs to be solved by replacing the shell of the infrared thermometer.
2: The output error of the online infrared thermometer is large. In this case, there are more possible reasons. If the in-line infrared thermometer is replaced, it may be new. The linear variation range of the infrared thermometer is inconsistent with the original one, resulting in sensitivity error. Usually, the infrared thermometer needs to be recalibrated after replacing the infrared thermometer. Of course, the output error of the online infrared thermometer is relatively large. It is also possible that the infrared thermometer was not calibrated at the factory. Simply recalibrate at this point.
3: The output signal of the online infrared thermometer is unstable. This is caused by the temperature source itself. Many temperature sources themselves are not usually at a constant temperature. If possible, observe them under critical room temperature conditions. And use other instruments to monitor whether the output signal of the infrared thermometer is stable. If only the display is unstable, it means that the anti-interference ability of the display is not strong. Of course, the reasons listed here are just some of the more common ones. In actual use, it is also necessary to understand the types and application characteristics of online infrared thermometers in order to use them better.
