Professional enterprise instrument calibration and measurement equipment external calibration and inspection company

Professional enterprise instrument calibration and measurement equipment external calibration and inspection company

The following is a general calibration procedure for film thickness testers:

Pre-calibration preparation

• Select standard samples: Select standard samples with thickness that meets the measurement range of the instrument and whose thickness values are accurately known, such as standard films, metal sheets, etc., and their materials should be similar to the sample to be tested.

Check the instrument: Ensure that the battery or power supply of the film thickness tester is normal, and that the sensor is not damaged or contaminated.

• Control environment: Calibration should be carried out in a place with relatively stable environmental conditions such as temperature and humidity to avoid external interference.

Calibration steps

Zero point calibration: Place the probe in air or on a substrate without a film, press the instrument's zero calibration button to perform zero point calibration, and make the reading zero.

Single point calibration: Place a standard sample of known thickness at the measuring position of the instrument, and compare the measured value with the standard value after measurement. If there is a deviation, adjust the measured value to be consistent with the standard value through the instrument's adjustment key.

Multi point calibration: Select multiple standard samples of different thicknesses and repeat the single point calibration steps. Generate calibration curves or calibration coefficients based on the differences between the measured values at each point and the standard values, for subsequent measurement corrections.

Professional enterprise instrument calibration and measurement equipment external calibration and inspection company

Verification after calibration

Measure the standard sample again: After completing the calibration, use the calibrated instrument to measure the standard sample again to ensure that the measurement result is within the allowable error range of the standard value.

• Recording and reporting: Detailed recording of the calibration process and results, including standard sample information, instrument settings, measured values, calibration adjustments, etc., forming a calibration report and archiving it.

The calibration methods for different types and brands of film thickness testers may vary, and the calibration process should be strictly carried out in accordance with the operating manual and calibration guidelines provided by the instrument manufacturer.