During the use of infrared thermometers, there will be some interference to varying degrees. The degree of interference varies from application to application. This situation has brought a lot of trouble to the application in various fields. Therefore, the anti-interference measures for infrared thermometers and the solution to the interference problem in the case of serious interference are another key topic besides design and development.

In the face of interference, sometimes people have no way to start, or even think that the cause of the problem is the interference. Therefore, when the infrared thermometer fails in some occasions with strong electromagnetic waves, after excluding the cause of the instrument itself, the first reason to consider is the problem of electromagnetic interference. There was once a case: a steel forging customer reported that one of the 9 thermometers provided by our company was malfunctioning shortly after using the 9 thermometers provided by our company. After the thermometer returned to the factory, everything was tested by the technical after-sales department, and the thermometer was sent back to the customer. After the customer installed and tested the fault remained the same, it was estimated that it might be caused by interference from the customer's site through telephone communication. The company sent technicians to deal with it on site. After arriving at the site, the technician First of all, it is found that the induced voltage of the thermometer shell is as high as 20V, and the induced voltage on the iron material of other equipment is also more than 20 volts. There are high-voltage and high-frequency equipment around. It is estimated that the source of interference is received by the thermometer through the mounting bracket. For the huge source of interference from other equipment, the technicians decisively took the path of isolating the interference between the infrared thermometer and other equipment - installing a rubber pad between the infrared thermometer and the mounting bracket, and disconnecting the circuit board from the shell Electrical connection, after installation, start up and test everything is OK, so far the fault is eliminated. Other thermometers that did not fail did the same. Everything is working fine so far.