Digital Film Thickness Tester

The digital coating thickness gauge operates on the principles of magnetic induction or eddy current. When the probe contacts the coating, it generates changes in the electromagnetic field, measuring the signal difference at the interface between the substrate and the coating to calculate the thickness. It is used for on-site rapid detection of paint and plating thickness on metal/non-metal substrates, providing direct readings for applications such as corrosion prevention in steel structures and quality control in automotive spray painting.
Selection
When selecting, consider matching the substrate type with the magnetic induction or eddy current principle. The measurement range should cover the expected coating thickness. Use a small probe for curved surface measurements, and choose an IP54 or higher protection rating for harsh environments. Calibration should include standard samples made of the same material as the substrate. For long-term use, pay attention to the wear resistance of the probe and the temperature compensation function.

Terms

Standards

Instruments

Adopt double roller painting film structure, thickness adjustment range 0.001-2mm, Spreader accuracy +/- 5%, equipped with automatic deviation correction device and digital dial Meter, coating speed 0-20m/min adjustable, drying tunnel temperature up to 150 ℃.

$ 32347.00

With 0.001mm High Accuracy and 1.0μm resolution, low pin pressure design and digital linear encoder, it supports multiple international standards for thickness measurement of various sheet substrates.

$ 20768.00

Drawdown blade structure with magnetic suction removable, easy to clean; film thickness range 0-5000μm adjustable, Drawdown blade accuracy up to +/- 5μm, lightweight wear and corrosion resistant rack to improve durability.

$ 945.00

Adopt magnetic suction removable drawdown blade structure, easy to clean; film thickness range 0-5000μm adjustable, drawdown blade accuracy of +/- 5μm, high Hardness die steel material to ensure wear resistance and corrosion resistance.

$ 2010.00

Measuring wet-film flow thickening in the vertical state, controlling the physical performance of the coating to select the appropriate wet film thickness to ensure uniform film thickness, Film thickness range 450-675μm, in line with GB/T 9264 and ASTM D 3730 standards.

$ 146.00

Drawdown blade structure with magnetic suction removable, easy cleaning; film thickness range 0~ 5000 μ m adjustable, Drawdown blade accuracy of +/- 2 μ m; Lightweight hard aluminum oxide frame and high Hardness die steel Drawdown blade, wear resistance and corrosion resistance.

$ 735.00

It is designed with a digital thousand-minute differentiator, with a dual unit display of μm and mils, with a range of 0~ 10mm and a Graduation of 1μm, to achieve precise thickness control.

$ 154.00

In line with ISO2808-1974 standard, the range is 0~ 150μm, the accuracy is not more than 5μm, can measure the wet film thickness and estimate dry-film thickness, suitable for laboratory and pRoduction control.

$ 127.00

The formed pRoduction process is adopted, the wet film thickness is 42 μm, the application width is 60mm, the preparatory coating is uniform and the film thickness is accurately controllable, which is convenient for comparative analysis by conversion of dry-film thickness by Solid content.

$ 120.00

Using smooth steel bar design, no winding steel wire or pressurized groove, film thickness is 0μm, diaMeter 6.35mm, total length 400mm, suitable for machine control film thickness.

$ 144.00

The 4-sided design can complete different thickness films at one time, using wear-resistant and corrosion-resistant stainless steel material, film thickness 150-300μm, application width 105mm, can accurately control wet-film or dry-film thickness.

$ 235.00

In line with ISO2808 standard, the range is 0~ 500μm, the accuracy is not more than 5μm, can measure the wet film thickness and estimate dry-film thickness, suitable for laboratory and pRoduction site.

$ 127.00

304 stainless steel material, wet film thickness of 200 μ m, Spreader width of 250mm, formed pRoduction process to ensure uniform film, suitable for precision experimental needs.

$ 157.00

Adopt scale differential head to adjust film Film thickness, Graduation 10 μ m, film range 0~ 5000 μ m, accuracy +/- 5 μ m, drawdown blade straightness +/- 2 μ m, die steel drawdown blade wear resistance corrosion resistance.

$ 280.00

Spreader formed process to ensure uniform, wet film thickness 36.6μm, application width 300mm, suitable for accurate film thickness control, the total length of 400mm easy to operate.

$ 167.00

Articles

Selection of Coating Thickness Gauges Using Magnetic and Eddy Current Methods on Different Substrates
This article introduces two main methods for coating thickness gauges: the magnetic method and the eddy current method. When choosing a method, the key is to determine it based on the electromagnetic properties of the substrate.
Application of Coating Thickness Gauges in Electroplating Thickness Detection
Coating thickness gauges are used to measure the thickness of electroplated layers, primarily employing the electromagnetic induction method for measuring non-magnetic coatings on magnetic substrates, or the eddy current method for measuring insulating coatings on non-magnetic metal substrates.
Ultrasonic thickness gauge for detecting thick coatings and composite coatings.
Ultrasonic thickness gauges measure coating thickness using the principle of ultrasonic pulse reflection, calculating the result based on the propagation time of sound waves in the material and the speed of sound. When detecting thick coatings and composite coatings, challenges such as acoustic attenuation of the material, unknown sound speed, and signal recognition at multi-layer interfaces must be addressed.
Coulometric Method Coating Thickness Gauge for Non-Destructive Measurement of Precious Metal Coatings
The coulometric coating thickness gauge measures the thickness by calculating the amount of electricity required to dissolve the precious metal coating through the principle of electrolytic dissolution. This method is non-destructive to the overall sample, only forming tiny electrolytic spots.
Comparison of Dual-Principle Instruments: Magnetic Induction vs. Eddy Current for Coating Thickness Measurement
This article compares the principles of two coating thickness gauges. The choice of method depends on the substrate material: magnetic induction is used for magnetic metals, while eddy current is applied for non-magnetic metals.
Eddy current thickness gauge detects coatings on non-ferrous metals.
The eddy current thickness gauge operates on the principle of electromagnetic induction, generating an alternating magnetic field through the probe coil, which induces eddy currents on the surface of non-ferrous metal substrates.
Magnetic thickness gauge measures the thickness of coatings on steel surfaces.
Magnetic thickness gauges are used to measure the thickness of non-magnetic coatings on ferromagnetic substrates such as steel, based on the principles of magnetic induction or changes in magnetic attraction. Prior to use, calibration should be performed according to relevant standards, and attention should be paid to factors such as substrate characteristics, workpiece shape, and surface conditions that may affect the measurements.
The principle of measuring dry film thickness with a coating thickness gauge
Coating thickness gauges measure dry film thickness through non-destructive methods, with commonly used principles including electromagnetic induction, eddy current, and ultrasonic methods.
Standard Operating Procedure for Zero Calibration and Substrate Calibration of Coating Thickness Gauges
This article introduces two key calibration methods for coating thickness gauges: zero-point calibration and substrate calibration. During operation, it is important to ensure that the probe is perpendicular, pressure is applied evenly, and regular calibration and recording are maintained. These steps effectively enhance measurement accuracy and meet industry standard requirements.
Differences in Measurement Principles Between Magnetic Method and Eddy Current Method for Coating Thickness Gauges
Coating thickness gauges primarily utilize two measurement principles: magnetic method and eddy current method. The selection of the method should be based on the characteristics of the substrate material to ensure measurement accuracy.
What is a Coating Thickness Gauge? A Complete Analysis of Its Principles, Usage, and Application Areas
The article systematically elaborates on the working principles of two core measurement techniques, magnetic induction and eddy current, detailing the standard measurement process from calibration to data recording, and conducting an in-depth analysis of the influence of substrate characteristics, geometric shapes, and environmental factors on measurement accuracy.