Oil Film Thickness Tester

The oil film thickness gauge measures the thickness of coatings on metal surfaces using magnetic induction or eddy current principles. A probe contacts the sample, causing changes in the signal, which are then used to calculate the coating thickness. It is used to detect overlays such as paint and plastic, and to control coating quality in the automotive and shipbuilding industries.
Selection
When selecting, consider the substrate type: use the magnetic induction principle for magnetic substrates and the eddy current principle for non-magnetic substrates. Choose the measurement range based on the coating thickness. Use a fixed probe for flat surfaces and a flexible probe for curved surfaces. Confirm the accuracy requirements: select ±3% accuracy for routine inspections and ±1% for laboratory use. Choose a waterproof model in humid environments.

Terms

Standards

Instruments

Film thickness 0.5mm fillet edge no burr design, with anti-rust oil to protect the surface, suitable for adhesion, hardness and other paint performance testing experiments, about 120 pieces per kilogram Encasement.

$ 84.00

Using 304 wear-resistant stainless steel material, wet film thickness 18.3μm, Spreader width 300mm, suitable for a variety of fluid samples of experimental film requirements.

$ 186.00

Providing 77.7μm wet film thickness and 300mm application width, the formed process ensures uniform film, suitable for Spreader requirements of a variety of liquid materials.

$ 167.00

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

Film thickness 0.5mm, rounded edge design without burr, surface with anti-rust oil, suitable for coating adhesion, hardness, Impact and other performance testing experiments.

$ 84.00

Film thickness 0.5mm, rounded edges without burr design, surface with anti-rust oil, suitable for adhesion, hardness, Impact and other paint performance testing experiments.

$ 84.00

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

4-Sided frame design, provide 30/50/75/100μm variety of film thickness selection, application width 80mm, stainless steel corrosion resistance, in line with GB/T 1727 standard, to ensure uniform film.

$ 170.00

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

Using molding process to ensure unbroken wire, film thickness 32.0 μ m, effective application width 300mm, suitable for a variety of Adhesive sample Spreader.

$ 167.00

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

Articles

Ultrasonic Thickness Gauge Selection: Technical Considerations for Probe Configuration and Measurement Modes
This article primarily introduces the technical factors to consider when selecting an ultrasonic thickness gauge. In terms of probe configuration, the frequency affects both resolution and penetration depth, while crystal size determines adaptability to curvature and surface conditions. Dual-element probes offer a smaller dead zone compared to single-element probes, and delay-line probes are suitable for thin-wall and high-temperature applications.
Mechanical thickness gauge for measuring film thickness uniformity.
The mechanical thickness gauge assesses the uniformity of film thickness through contact measurement. During measurement, the probe contacts the sample under standard pressure, converting displacement into a thickness reading.
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.
Coulometric thickness gauge measures the sealing quality of anodic oxide films.
This article introduces a method for assessing the sealing quality of anodic oxide films using a coulometric thickness tester. The sealing quality affects the corrosion resistance and wear resistance of the oxide film. Based on electrochemical principles, the coulometric thickness tester evaluates the sealing effectiveness by measuring the electric charge required to dissolve the oxide film, providing objective and repeatable results.
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.
Eddy current thickness gauge measures metal coatings on non-conductive substrates.
The eddy current thickness gauge utilizes the principle of electromagnetic induction, generating an alternating magnetic field through the probe coil to induce eddy currents in the metal coating, thereby measuring thickness based on changes in coil impedance.
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.
Application of Electrolytic Thickness Tester in Quality Control of Precision Electroplating Layers
The electrolytic thickness gauge measures coating thickness through the principle of electrochemical dissolution, calculating based on Faraday's law, offering high accuracy and independence from calibration.
Ultrasonic Thickness Gauge Measures the Thickness of Flexible Packaging Materials
This article introduces the principles, technical points, and operational procedures for measuring the thickness of flexible packaging materials using an ultrasonic thickness gauge. It is based on the principle of ultrasonic pulse reflection, which calculates thickness by measuring the propagation time of sound waves through the material.
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.