Product Overview
The DR380A Coating Thickness Gauge is a portable, rechargeable dual-purpose coating thickness gauge for iron and aluminum from the Dongru brand. It is a non-destructive testing instrument designed to measure the thickness of coatings on metal surfaces in accordance with national industry standards. Equipped with high-quality imported metal probes, it features a precise and robust structure with excellent repeatability. Depending on the metal substrate, the instrument can measure the thickness of non-magnetic coatings on steel substrates using the magnetic method, or the thickness of non-conductive coatings on non-magnetic metal substrates (such as aluminum, copper, and stainless steel) using the eddy current method.
Product Features
1. Simple operation, fast testing speed, good sensitivity, and high measurement accuracy.
2. Utilizes an alloy probe that is hard, durable, and precise.
3. Features two measurement modes: continuous measurement and single measurement.
4. Includes four statistical functions: maximum, minimum, average, and measurement count.
5. Large-capacity storage, with data divided into 10 groups of 200 each, totaling 2000 data points, and includes storage data viewing and deletion functions.
6. Provides three calibration methods: zero-point calibration, two-point calibration, and multi-point calibration.
7. Features upper and lower limit alarm functions (configurable in single measurement mode).
8. Operation is accompanied by a beep indicator (in single measurement mode).
9. Automatically identifies ferrous and non-ferrous substrates.
10. Units can be converted among μm, Mil, and mm.
11. Capable of measuring single and double-sided zinc coating weight.
12. Available in both Chinese and English language versions.
13. Displays on a 2.8-inch large color screen with large fonts.
14. Type-C charging, equipped with a high-capacity lithium battery (3000mAh) for extended battery life.
15. Features manual/automatic shutdown function.
16. Optional USB or Bluetooth synchronous data transmission (customizable).
Working Principle
The instrument employs two working principles. For magnetic metal substrates (such as steel and iron), it uses the magnetic thickness measurement method, which determines the coating thickness by measuring the change in magnetic flux between the probe and the magnetic substrate due to the presence of a non-magnetic coating. For non-magnetic metal substrates (such as aluminum, copper, and stainless steel), it uses the eddy current thickness measurement method, which utilizes the high-frequency electromagnetic field generated by the probe to create eddy currents in the substrate and determines the coating thickness by measuring the changes in the eddy current effect caused by the presence of a non-conductive coating.
Application Fields
Coating industry, manufacturing, metal processing industry, chemical industry, commodity inspection, and other testing fields.
Complies with standards
GB/T 4956-2003、GB 4957-2003
Operating steps
1. Based on the material of the substrate being measured, the instrument automatically or manually selects the magnetic method or eddy current method for measurement mode.
2. Depending on the measurement requirements, choose between single measurement or continuous measurement mode.
3. Before measurement, perform zero calibration, two-point calibration, or multi-point calibration as needed.
4. Place the probe vertically and steadily on the surface of the coating being measured to conduct the measurement.
5. Read the measurement results displayed on the screen.
6. Optionally, store the measurement data in a specified group.
7. Use the statistical function to view the maximum, minimum, average values, and the number of measurements of the recorded data.
8. In single measurement mode, upper and lower limit alarm values can be set, and an alarm will trigger if the measurement exceeds these limits.
9. After the measurement is completed, the instrument can be manually turned off or left to automatically shut down.
Precautions
• When measuring, ensure the probe is in vertical and stable contact with the coated surface to obtain accurate readings.
• During calibration and measurement, use a standard specimen or substrate with the same material and surface roughness as the workpiece being tested.
• The instrument probe is a precision component and should be protected from impact or abrasion.
• Avoid strong electromagnetic interference in the measurement environment.
• Calibrate the instrument regularly to ensure measurement accuracy.
• When not in use for an extended period, it is recommended to turn off the instrument to save power.
• Use the provided or compatible Type-C charging cable and adapter for charging.
• Data processing functions (such as USB/Bluetooth transmission) are customization options and may not be included in the standard configuration. Please verify this when purchasing.
