Non-destructive Film Thickness Meter

Non-destructive thickness gauges use physical principles such as ultrasound, electromagnetic induction, or eddy currents to measure the thickness of coatings, films, or plates without damaging the material. They are used to monitor production quality and control the thickness of platings or paint films in industries such as automotive, electronics, and packaging.
Selection
When selecting, consider the material type: use eddy current instruments for metal substrates and ultrasonic instruments for non-metallic materials. The measurement range must cover the sample thickness, with accuracy determined according to process requirements. The probe size should match the shape of the measured area, and environmental adaptability should account for the effects of temperature and curvature.

Terms

Standards

Instruments

Using photothermal method to achieve non-destructive measurement, Measurement range 0-300μm, accuracy +/- 3%, can be measured in any shape of the sample including the frame and edge.

$ 25028.00

Adopt split Probe, Frequency 5MHz/2.5MHz, Measurement range 1.2-225 mm, support Speed of sound back measurement and Data storage functions, suitable for a variety of material thickness detection.

$ 242.00

Measurement of thick soft coatings such as polyurea and asphalt, thickness range 50 to 7600 μm, storage of 100,000 readings, ASTM D6132 compliant, non-destructive ultrasonic technology, durable and easy to operate.

$ 3987.00

Measurement range 13-1000μm, accuracy +/- (3% H + 2) μm, non-destructive ultrasonic technology, resistance to solvents, acids, oils, water and dust, storage of 250 readings, support for USB connection and software updates.

$ 2855.00

Measurement range 50-3800 microns, ASTM D6132 and ISO 2808 compliant, non-destructive ultrasonic technology, Sensitive Sensor and Wear Resistant Probe support for multi-Probe replacement.

$ 3117.00

Using magnetic Induction principle, automatically identify magnetic metal substrate, high wear-resistant carbide Probe service life of more than 500,000 times, with zero point, single point, five point Adjustment, can store 1600 measurement data and connect to computer software.

$ 311.00

Using a formed pRoduction process, the wet film thickness is 20.6 μm, the accuracy is 0.1 μm, the non-wire-wound structure is easier to clean and the filament is not broken, and three diaMeters are provided to adapt to different usage habits.

$ 160.00

Measurement range 0-4mm, resolution 0.001mm, contact pressure 2 +/- 0.1kPa, suitable for ultra-thin materials, with High Accuracy and stable parallelism control.

$ 622.00

The device adopts destructive measurement, resolution +/- 0.001mm, can carry out V-shaped incision, grid cutting and Cedar test, directly observe Coating thickness and Cedar length, support multi-layer film analysis.

$ 630.00

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

The eddy Current principle is used for measurement of nonconductive coatings on non-ferrous metal substrates, with a thickness range of 0~ 625μm and an error of +/- 3%. It has IP65 Protection Rating and fast measurement capabilities of more than 60 readings per minute.

$ 1338.00

Spreader width 100mm, wet film thickness 60μm, high-quality wear-resistant corrosion-resistant alloy steel material, manual film can also be equipped with automatic Film Applicator, support non-standard customization.

$ 143.00

The pat speed is 3~ 12 times/second, the pat spacing is 0~ 40mm, the homogeneity is soft and non-destructive, and there is no need to sterilize, which effectively prevents cross-contamination and protects the operator's safety.

$ 1639.00

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

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.