Ultrasonic Thickness Measurement Gauge

Ultrasonic thickness gauges utilize piezoelectric wafers to emit high-frequency sound waves that penetrate materials, receive the echoes, and calculate the round-trip time of the sound waves. By combining this with the material's sound velocity, the thickness is determined. They are used to measure the thickness of single materials such as metals and plastics, and find applications in equipment wall thickness monitoring and material processing.
Selection
When selecting, consider the compatibility of the material's sound velocity range with the instrument. For curved surface measurements, use a small-diameter probe; for high-temperature environments, opt for a high-temperature probe; for thin materials, employ a high-frequency probe; for rough surfaces, choose a low-frequency probe paired with coupling agent. Select digital or analog models based on precision requirements.

Terms

Standards

Instruments

Measurement principle using ultrasonic, Measurement range 50~ 3800μm, accuracy +/- (2μm + 3%), suitable for concrete and fiberglass substrate Coating thickness detection.

$ 2939.00

Using the principle of ultrasonic thickness measurement, Display resolution up to 0.01mm, with Probe zero point Adjustment, support Data storage and backlight display, can be used in dark environment.

$ 248.00

Measurement principle using ultrasonic, Measurement range 13~ 1000μm, accuracy +/- (2μm + 3%), suitable for wood, plastic and other substrates polymer Coating thickness detection.

$ 2652.00

Using ultrasonic measurement technology, Measurement range 0.75-350 mm, resolution up to 0.001mm, with anti-measurement sound speed function, can store 2000 sets of data, support a variety of probes to adapt to different working conditions.

$ 506.00

Measurement range 1.2~ 225mm, support Speed of sound measurement and 12 data storage functions, with upper and lower limit alarm settings and coupling status prompts, suitable for a variety of material thickness detection.

$ 223.00

Using non-penetrating ultrasonic technology, Measurement range 0.8~ 300mm, accuracy of 0.01mm, support four Measuring methods and 5000 data storage, with Automatic calibration and high-speed measurement function.

$ 1093.00

Measurement principle using ultrasonic pulses, accuracy of +/- (1% H + 0.1) mm, Measurement range 0.75-350 mm, with automatic zero point calibrate, two point calibrate and 200 data storage functions, support a variety of materials Speed of sound settings.

$ 251.00

Measurement range 1.0-300 mm, error +/- (1% H +/- 0.1) mm, support Speed of sound measurement and upper and lower limit alarm, suitable for a variety of material thickness detection.

$ 307.00

Using ultrasonic measurement technology, Measurement range 0.75~ 300mm, error +/- (1% H + 0.1) mm, support single point and scan mode, with Automatic calibration and sound speed reverse measurement function, suitable for harsh environment.

$ 315.00

Using ultrasonic technology nondestructive measurement, up to 3 layers of coating system measurement range 50~ 3800 μ m, error +/- 3%, with weatherproof design and high capacity Data storage function.

$ 3724.00

Using Ultrasonic Sensor Technology, Measurement range 1~ 200mm, resolution 0.1mm, with Strong Transmitting Power and Broadband Receiving Sensitivity, suitable for rough surface and paint measurement.

$ 356.00

Using microprocessor technology implementation 0.7-400 mm thickness measurement, resolution is +/- 0.01mm, support five Probe options, with automatic shutdown and backlight display function.

$ 577.00

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

Using ultrasonic technology implementation nondestructive measurement, Measurement range 50~ 3800μm, accuracy +/- 3%, with weatherproof design, support USB data transmission and a variety of Unit switching, suitable for a variety of substrate conditions.

$ 3117.00

Measurement range 1.5~ 200mm, error +/- (0.5% H + 0.2) mm, with low voltage prompt function, portable design for outdoor use, suitable for thickness measurement of various materials such as metals, ceramics, plastics.

$ 315.00

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.