Non-contact Thickness Meter

Non-contact thickness gauges measure thickness by emitting signals such as ultrasonic waves, lasers, or electromagnetic waves, and calculating the time difference or intensity change of the signals reflected or penetrating the material surface, without contacting the sample. They are used for real-time monitoring of the thickness of coatings, films, or sheets, avoiding surface damage, and are suitable for quality control in production lines for coatings, plastics, paper, and other materials.
Selection
When selecting a non-contact thickness gauge, consider the material type and thickness range, and match sensor technologies such as ultrasound for multi-layer materials and laser for smooth surfaces. Evaluate measurement accuracy and response speed to ensure adaptability to the production line environment. Check the instrument's environmental tolerance, such as the impact of temperature and humidity. Refer to brand reliability and maintenance support to ensure long-term stable use.

Terms

Standards

Instruments

D/8 standard non-contact test, measurement distance 3.0mm, the fastest 0.2 seconds to complete the measurement, support a variety of Color Space and Illuminant, suitable for automatic pRoduction line accurate Color quality control.

$ 8109.00

Using 45/0 ring lighting and concave grating spectroscopy technology, the measurement diaMeter is Φ 20mm, the non-contact measurement distance is 7.5mm, and the chromatic value Repeatability is within 0.03. Color difference formula and chroma index analysis are supported.

$ 8109.00

Adopt 45/0 structure, measurement Repeatability dE * ab ≤ 0.02, Inter-instrument Agreement dE * ab ≤ 0.25, support non-contact detection, waterproof and dustproof IP66, multiple communication interfaces, LED Illuminant long life.

$ 3946.00

Adopt 45/0 ° ring illumination and concave grating spectroscopy, measurement wavelength 400~ 700nm, non-contact distance 7.5mm, avoid sample contamination, support a variety of Measurement modes and camera positioning.

$ 8109.00

Non-contact measurement avoids contact with dangerous objects, Response Time 500ms Fast reading temperature, temperature range -32~ 550 ℃ covers a wide range of scenarios, compact structure and easy to operate.

$ 85.00

Using 45/0 ring lighting and concave grating spectroscopy technology, measurement Wavelength range 400~ 700nm, non-contact distance 7.5mm, avoid sample contamination and damage, support a variety of Measurement modes and camera positioning.

$ 7464.00

Optical inspection structure of 45/0 °, non-contact distance of 7.5mm, measurement wavelength of 400-700nm, avoid sample contamination and damage, support a variety of Measurement modes and High Accuracy Color Analysis.

$ 7464.00

Measurement range 200-20000 rpm, accuracy of +/- (1 × 10 × reading + 1) rpm, support non-contact speed measurement and steering determination function.

$ 198.00

The non-contact grating optocoupler Sensor is used to automatically collect data, with a nominal kinetic energy of 2.207J, supports automatic calculation of intensity and voice broadcast, and has a built-in steel anvil calibration function to improve detection efficiency and accuracy.

$ 369.00

Non-contact automatic whiteboard calibration technology, Inter-instrument Agreement Delta E * 00 < 0.2, high measurement Stability, supports more than 30 Color indicators and 28 kinds of observation Illuminants, compact and easy to carry.

$ 332.00

Non-contact measurement distance 7.5mm +/- 3mm fluctuation is still accurate, the measurement time is only 20ms, built-in auto calibration and Gloss compensation technology to ensure accurate and reliable Color data.

$ 12068.00

Non-contact Sensor to reduce measurement drift, conductivity Measurement range of 0-10000 μS/cm, temperature accuracy of 0.1 ℃, support up to 3 years of battery life and 70 Meters water depth working environment.

$ 1719.00

Using 45/0 ring illumination and concave grating spectroscopy technology, the measurement diaMeter is 20mm, and the non-contact distance is 7.5mm. With 256 pixel dual array CMOS sensor, Wavelength range 400~ 700nm, chromatic value Repeatability Delta E * ab 0.05, supports a variety of Color space and color difference analysis.

$ 7464.00

Repeatability less than or equal to 0.05, display accuracy 0.01, non-contact automatic whiteboard calibration and integrating ball dual optical path design, Type-C interface can be continuously tested 12,000 times when fully charged.

$ 393.00

Repeatability Delta E * ab within 0.1, Measurement time of about 1.0 seconds; Non-contact automatic whiteboard calibration to avoid dirt, integrating ball double light path design to ensure stability, lightweight and portable can be continuously tested 12,000 times.

$ 234.00

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.