Common faults of infrared thermometers and their solutions
Common faults of online infrared thermometers and their solutions As we all know, industrial production is inseparable from precision instruments, online thermometers, to monitor the temperature of objects. Online infrared thermometers are very mature and are very common in factories. Online Infrared thermometers are usually used in conjunction with instruments, and often appear in the form of a transmitter. That is, the signal output by the infrared thermometer is processed by relevant circuits and converted into some standard signal output, such as 0---5V. voltage, or 4---20mA output. Some minor faults may occur during supporting use. Here are several common fault phenomena and their solutions:
1: When the temperature of the measured medium increases or decreases, the output of the online infrared thermometer does not change. This situation is mostly caused by the sealing problem of the online infrared thermometer. It may be that the online infrared thermometer is not sealed properly, or A small hole was accidentally made in the infrared thermometer during welding. This situation generally needs to be replaced by replacing the infrared thermometer shell.
2: The output error of the online infrared thermometer is large. In this case, there are many possible reasons. If the online infrared thermometer in the online infrared thermometer is replaced, it may be that a new infrared thermometer is selected. The linear variation range of the thermometer is inconsistent with the original one, resulting in sensitivity errors. Usually, recalibration is required after changing the infrared thermometer. Of course, the output error of the online infrared thermometer is large. It is also possible that the infrared thermometer was not calibrated when it left the factory. In this case, it can be recalibrated.
3: The output signal of the online infrared thermometer is unstable. This reason is due to the temperature source itself. Many temperature sources themselves are generally not at a constant temperature. If conditions permit, it can be observed under the important conditions of room temperature indoors and used with other The instrument monitors whether the infrared thermometer output signal is stable. If only the instrument display is unstable, it means that the anti-interference ability of the display instrument is not strong. Of course, the reasons listed here are only some of the common ones. In actual use, you also need to know the type and application characteristics of online infrared thermometers in order to make better use of them.
