Technique for Coating Thickness Gauge Temperature Compensation Measurement
The temperature compensation measurement method of the coating thickness gauge includes the temperature coefficient calibration step, the startup zero calibration step and the thickness measurement work step, and finally calculates the value of the actual coating thickness dx; using the correlation between the electromagnetic field change of the inductor coil and the temperature, that is, in The value at the infinity end is measured once during the measurement process, and the temperature change coefficient at the infinity end is proportional to the temperature change coefficient when the measuring probe is close to the measured object substrate for measurement. Using this feature to realize temperature compensation can reduce the temperature measurement error as much as possible. The measurement error of this method can basically be controlled within 1%, while our current national standard requires within 3%. By comparison, the measurement error of this method can be controlled within 1%. The measurement accuracy has reached the measurement accuracy of international brand machines, and it is still at a very high level in China.
The temperature compensation measurement method of the coating thickness gauge includes the temperature coefficient calibration step, the startup zero calibration step and the thickness measurement work step, and finally calculates the value of the actual coating thickness dx; using the correlation between the electromagnetic field change of the inductor coil and the temperature, that is, in The value at the infinity end is measured once during the measurement process, and the temperature change coefficient at the infinity end is proportional to the temperature change coefficient when the measuring probe is close to the measured object substrate for measurement. Using this feature to realize temperature compensation can reduce the temperature measurement error as much as possible. The measurement error of this method can basically be controlled within 1%, while our current national standard requires within 3%. By comparison, the measurement error of this method can be controlled within 1%. The measurement accuracy has reached the measurement accuracy of international brand machines, and it is still at a very high level in China.
Performance characteristics of non-contact laser thickness gauge:
1. Non-contact type, that is, the non-radioactive fluorescent light source emitting box and receiving box are located at the upper and lower relative positions of the plate, and the thickness gauge does not directly contact the plate.
2. The thickness gauge is installed on the anti-vibration foundation, and the shell is water-cooled and shielded, so it is not affected by high temperature, dust, vibration and electromagnetic interference.
3. Continuous and rapid sampling measurement to realize high-speed plate thickness detection.
4. High dynamic measurement accuracy, high-precision non-destructive online detection of plate thickness.
5. During the rolling process, the thickness change of the plate can be displayed in real time, which can directly reflect the rolling situation.
6. It can be customized as multi-point measurement or horizontal coverage measurement.
