Measuring method for temperature compensation of coating thickness gauges
The temperature compensation measurement method of coating thickness gauge includes temperature coefficient calibration steps, power-on zero calibration steps and thickness measurement steps, and finally calculates the actual coating thickness dx value; using the correlation between the electromagnetic field change of the inductor coil and temperature, that is, During the measurement process, the value at the infinite end is measured once. The temperature change coefficient at the infinite end is proportional to the temperature change coefficient when the measuring probe is close to the base of the measured object for measurement. Using this feature to achieve temperature compensation can reduce the temperature measurement error as much as possible. The measurement error of this method can basically be controlled within 1%. However, our current national standard requires that it be within 3%. By comparison, the measurement error of this method is The measurement accuracy has reached the measurement accuracy of international brand machines, which is still at a very high level in China.
Maintenance of coating thickness gauge
Most of the instruments have the following problems:
1) The LCD screen is damaged;
2) There is no data display due to poor contact between the host and the probe;
3) The host has no display;
4) No data appears after the probe is connected, although the F or NF mark is displayed.
Due to the long return to factory repair cycle and high price, the most important thing is that it delays the customer's normal work.
There are many reasons for the problem, but they are all:
1) The motherboard is damaged;
2) Software damage;
3) The probe wire socket is damaged causing poor contact;
4) The probe is seriously worn and has no maintenance value.
During use, be sure not to scratch the surface of the probe with hard objects to avoid damaging the coil.
