Frequently asked questions and answers for coating thickness gauges
Q: What is the reason for the abnormal startup and alarm of the coating thickness gauge?
Answer: During the use of the coating thickness gauge, sometimes there may be a startup alarm, which is generally caused by the following reasons:
1. If the device is turned on without the probe inserted, an instrument malfunction alarm will appear after the device is turned on. This is a normal alarm, and the device must be turned off and the probe inserted before turning it on.
2. After inserting the probe and turning it on, a fault alarm is required. First, shut down and reinsert the probe to check if it is not properly inserted, causing poor contact and triggering an alarm.
3. If the probe is indeed plugged in and still triggers an alarm when turned on, it may be due to the probe connection cable being damaged during the insertion and removal of the probe or the probe itself being damaged. Please send it back for inspection and repair at the rear, and do not disassemble or repair it yourself to avoid further damage.
4. If there is no response when the keyboard is pressed after turning on, please ask Jining Aotai after-sales service () to open the back cover and reinsert the loose connection cable under the guidance of after-sales personnel. If the keyboard malfunctions due to prolonged use, please send it back to the after-sales service for replacement.
Q: What is the reason for the deviation in the measurement values at the same point?
Answer: If there is a deviation in the measurement value of the coating thickness gauge at the same point during use, there are several issues that need to be solved:
1. If you want to test the deviation of measurement values at the same point, you can set the instrument to continuous measurement conditions, place it on the measured surface without moving, and the instrument will automatically measure continuously, providing continuous measurement values. You can automatically measure the deviation of values at the same point and evaluate the quality of the instrument. Do not manually measure continuously at the same point, because you cannot be exactly on the same point, and the measured value cannot be a deviation from the measured value at the same point.
2. In measurement, within a small area, there is a significant difference in measurement values, which is usually caused by the surface roughness and unevenness of your substrate, which is a normal phenomenon. If there is no difference in the measured values at this time, it is definitely not correct!
3. In case of the phenomenon in 2, the customer can take the average value from the instrument after multiple measurements, that is, see the average thickness.
4. The instrument itself comes with a calibration substrate made of 45 steel. When using it, the user should calibrate the zero point on the same material as the measured object without coating. If the measured object has a curvature, then the calibration point has the same curvature or shape.
