How to set up the coating thickness gauge
The use of the coating thickness gauge needs to be carried out in strict accordance with the instrument operating instructions and daily testing experience. Sometimes it is not enough to use theory as a reference. Considering the environment and the use of instruments, some work experience is needed to make stable judgments and tests. Let's talk about the zero point calibration of the coating thickness gauge during the use of the thickness gauge:
The random accessories of the coating thickness gauge include: host (built-in probe), standard film set, AAA battery, operation guide, substrate, lanyard and instrument case.
1. Insert the battery.
When you hear a "beep", it means that the instrument has been powered on and can be turned on.
2. Press the button lightly.
When you hear "beep" followed by "beep" twice, and the letters "READY!" or "READY!_ _" appear on the screen at the same time, it means that the instrument is ready to start testing. If there is no operation for 30 seconds, the instrument will automatically shut down.
3. Take out the random substrate, and place the instrument vertically on the substrate.
See if the screen of the instrument shows 0um or 0.mil, if it is not the value, please consult the quasi-zero point.
4. Press the button twice
A sound of "beep" is heard, and the characters "BASE ZERO_" appear on the screen at the same time.
5. The instrument is placed vertically on the substrate.
When a "beep" sound is heard, the character "DONE_" appears on the screen. It means that the zero point calibration of the instrument is completed.
6. The instrument is placed vertically on the substrate, whether the screen displays 0um or 0.mil, if not, repeat steps 4 and 5 above to recalibrate.
Note: When doing zero point calibration, the instrument must be placed vertically on the substrate without any inclination, anyway, the screen display is not zero point. A standard sheet is provided at random. After the zero point calibration, you can test the standard sheet to see if it is within the accuracy range of the instrument. If the deviation is large, it means that the zero point is not calibrated well. Repeat the calibration steps to complete. Some users think that the tested workpiece can be tested after zero point calibration on the random substrate. This is actually a misunderstanding. The random substrate may be the same as the substrate you are testing, but many situations are different. We all know that there are many kinds of FE elements, and each material is quite different, so before measuring the measured workpiece, it is best to do a zero point calibration when the measured workpiece is not coated with paint or other materials, so that the measurement The results are the most accurate.
