Mikrometry instruments limited

CLOSE

CLOSE

Products

Digital Paint Coating Thickness Gauge Meter: Working Principle and Precautions


In many industrial sectors, the thickness of a coating layer is a critical parameter. Proper coating thickness ensures corrosion resistance, mechanical strength, and aesthetic appearance. In manufacturing and maintenance processes, measuring coating thickness is essential for evaluating material specifications, uniformity, and the degree of corrosion or wear. Sometimes, it's necessary to determine the thickness of surface coatings to guarantee product quality and operational safety. Therefore, the digital paint coating thickness gauge meter plays an indispensable role across various specialized industries, enabling real-time detection of coating thickness and allowing timely action to ensure coating quality.


Working Principle of a Digital Paint Coating Thickness Gauge Meter


The digital paint coating thickness gauge meter operates based on different physical principles, primarily magnetic induction and eddy current.


Magnetic Induction Principle


This is one of the most commonly used methods. According to Faraday's law of electromagnetic induction, when the probe of the gauge meter approaches the surface of the test object, the magnetic field intensity in the coating layer changes. By measuring this change, the device can calculate the thickness of the coating. This principle is suitable for measuring non-magnetic coatings on magnetic substrates, such as zinc plating, spray coatings, etc.


Eddy Current Principle


Another widely used method, this principle applies alternating current to a coil, generating eddy currents in conductive materials. The probe of the gauge emits an alternating current, and the resulting eddy currents within the coating influence the probe. By measuring the change in response, the thickness of the coating can be determined. This method is ideal for conductive coatings on conductive substrates, such as metal coatings and electroplating layers.


Precautions for Using a Digital Paint Coating Thickness Gauge Meter



Other Blog


Related Precise Measurement Tools Of Mikrometry

EMS106L Video Microscope

EMS106L Video Microscope

EFGS Professional Force Indicator

EFGS Professional Force Indicator

EFG Handheld Digital Compression Force Gauge

EFG Handheld Digital Compression Force Gauge

Latest News From
Mikrometry
Bottle Torque Meter: Technological Innovation Enhancing Testing Efficiency

Bottle Torque Meter: Technological Innovation Enhancing Testing Efficiency

Oct 22,2025

The Advantages of Digital Torque Indicators in Mechanical Manufacturing

The Advantages of Digital Torque Indicators in Mechanical Manufacturing

Oct 20,2025

Digital Height Gauge: Empowering Smart Manufacturing with Precision

Digital Height Gauge: Empowering Smart Manufacturing with Precision

Oct 18,2025