Discussion on the necessity of anti-interference for infrared thermometer
During the use of infrared thermometers, there may be varying degrees of interference. The degree of interference varies in different application scenarios. This situation has brought a lot of trouble to applications in various fields. Therefore, anti-interference measures for infrared thermometers and solutions to interference problems in severe cases are another key topic beyond design and development.
In the face of interference, it can sometimes be difficult for people to get started, and even the reason for the problem is interference. Therefore, when an infrared thermometer malfunctions in situations with strong electromagnetic waves, the primary consideration after troubleshooting the instrument itself is the issue of electromagnetic interference. There was once a case where a steel forging customer reported a malfunction of one of the 9 thermometers provided by our company shortly after using them. The customer couldn't analyze the cause and finally returned the infrared thermometer to the factory for repair. After the thermometer was returned to the factory and tested by the technical after-sales department, everything was normal. The thermometer was returned to the customer, but after installation and testing, the fault still persisted. Through telephone communication, it was estimated that the customer's on-site interference may have caused it, The company sent technicians to handle the situation on site. After arriving at the site, the technicians first inspected and found that the induced voltage of the thermometer shell was as high as 20V, and the induced voltage on other equipment iron materials was also over 20V. There were high-voltage and high-frequency equipment around, and it was estimated that the interference source came from the thermometer receiving a huge interference source from other equipment through the installation bracket, The technical personnel decisively adopted the method of isolating the transmission interference between the infrared thermometer and other equipment - adding a rubber pad between the infrared thermometer and the installation bracket, and disconnecting the electrical connection between the circuit board and the housing. After installation, the startup test was conducted and everything was OK, and the fault was eliminated. Other temperature detectors that did not malfunction also underwent the same treatment. Everything has been normal since the customer used it.
From this, it can be seen that external interference has a huge impact on the infrared thermometer, sometimes not only on the data during the use of the instrument, but even seriously damage the instrument.
