Currently, temperature sensors are increasingly used in various fields, and it is inevitable that problems will arise during their use. Generally speaking, faults in temperature sensors are rare, and these issues can be avoided with careful inspection during manufacturing. Therefore, it is essential to conduct tests before the temperature sensors leave the factory, and customers can request factory inspection reports from the sensor manufacturers for reference.
The technology of temperature sensors has become very mature and is commonly found in factories. Temperature sensors are often used in conjunction with various instruments, and minor faults frequently occur during this paired usage. Therefore, we list several common faults and their solutions:
First, when the temperature of the measured medium increases or decreases, the transmitter output does not change. This situation is mostly due to sealing issues with the temperature sensor, which may be caused by improper sealing or accidentally creating a small hole in the sensor during welding. This issue generally requires replacing the sensor housing to resolve.
Second, unstable output signals. This can be attributed to the inherent instability of the temperature source itself. If the instrument display is unstable, it is likely due to the instrument’s poor anti-interference capability.
Third, large output errors from the transmitter. There are multiple reasons for this situation; it may be due to incorrect resistance wire selection for the temperature sensor leading to measurement range errors, or it could be that the sensor was not properly calibrated before leaving the factory.
Faults in temperature sensors are rare, and these issues can be avoided with careful inspection during manufacturing. Therefore, it is essential to conduct tests before the temperature sensors leave the factory, and customers can request factory inspection reports from the sensor manufacturers for reference.
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