How to operate geomembrane thickness gauge? -Huaqiang Electronic Network

**How to Operate a Geomembrane Thickness Gauge?** **Operation Steps:** 1. **Sampling:** Take a specimen transversely along the longitudinal direction of the sample, approximately 1 meter from the end. The strip should be 100 mm wide, free of wrinkles or other defects. 2. **Sample Conditioning:** Follow the specified procedures for conditioning the samples before testing. 3. **Preparation:** Ensure that the reference plate, sample, and dial indicator are clean and free of dust and oil. 4. **Calibration:** Before measurement, place the dial gauge on the calibration table of the reference board. After measurement, check if the reference point has changed. 5. **Measurement:** Gently place the sample on the measuring table and wait for the pointer to stabilize before taking the reading. 6. **Measurement Points Based on Width:** - If the geomembrane width is greater than 2000 mm, measure every 200 mm. - For widths between 300–2000 mm, take 10 measurements at approximately equal intervals. - For widths between 100–300 mm, measure every 50 mm. - For widths less than 100 mm, take at least 3 measurements. - For untrimmed samples, measure 50 mm away from the edge. **Test Results:** 1. The test results should be presented as the maximum and minimum thickness values of the sample. After calculation, round to four decimal places, then adjust to three decimal places according to GB3170, with an accuracy of 0.001 mm. 2. If required, follow this procedure to calculate the standard deviation of the average thickness and the coefficient of variation (Cv). This detailed process ensures accurate and reliable thickness measurements, making it suitable for quality control and compliance testing in various industrial applications.

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