What should I do if the sensor of the tensile testing machine experiences zero drift?

The sensor of the tensile testing machine is the core accessory of the entire machine, which is the key to recording the changes in force values during the entire testing process. If the sensor is inaccurate or has a large error, the accuracy and reliability of the entire testing data will be greatly compromised. The zero drift of the sensor inevitably reduces the sensitivity of the tensile testing machine and directly affects the testing results of the testing machine.

What is zero drift? After the sensor of the tensile testing machine is calibrated and qualified, it operates in a normal environment. After connecting to the tensile test, the zero point value fluctuates under no-load conditions, which is called zero drift.

Eliminating the following issues can basically solve the problem of zero drift of the tension machine sensor:

① Check if the equipment is well grounded

If the sensor of the tensile testing machine is a chip type product, especially for voltage output, it is required to be grounded well. Normally, it does not need to be grounded separately, and can be connected to the equipment through the metal of the pressure interface before grounding. Normally, legitimate tensile testing machine manufacturers will ground the equipment when installing the instrument.

② Check if the installation method of the sensor is correct

The correct installation method of the tension testing machine sensor is a significant factor affecting it. You can try changing the installation location.

③ Check for strong electricity or other sources of interference around the device

Due to the very weak output signal of the analog sensor, any interference may cause its signal to be unstable. Please check whether there is strong electricity around the installation of the tensile testing machine, such as high-power motors, or other interference sources, and investigate them one by one.

2023-06-27 11:17