Corneal Thickness Gauge

A corneal pachymeter utilizes ultrasonic or optical interference principles to measure corneal thickness. By contacting the cornea with a probe or performing non-contact scanning, it calculates the reflection time of sound waves or the optical path difference to obtain thickness data. It is used for preoperative ophthalmic examinations, glaucoma screening, and the diagnosis of corneal diseases.
Selection
When selecting, consider the measurement principle: ultrasonic methods require contact with the cornea, while optical methods are non-contact. Ensure the measurement range covers normal corneal thickness. The accuracy error should be less than 5 micrometers. Automated measurement is preferable for the operation method. Note that the supporting software should support data export functionality.

Terms

Standards

Instruments

Provide an additional one-year warranty period, which is applicable to Coating thickness Gauge pRoducts. It needs to be purchased simultaneously when purchasing the equipment and is not sold separately.

$ 122.00

Dedicated to Coating thickness Gauge calibrating, ensure accurate thickness measurement, suitable for F type equipment, improve Reliability.

$ 88.00

Measurement range 0~ 1250μm, suitable for LEEB220 and LEEB222 Coating thickness Gauge, Abrasion Resistance is good, suitable for a variety of nonmagnetic Coating thickness detection.

$ 157.00

Measurement accuracy with professional calibrating services for quality control and equipment maintenance, purchased with Coating thickness Gauge.

$ 154.00

With emission-echo and echo-echo two thickness measurement modes, Measurement range 0.65~ 600mm, Probe type can be automatically identified and zero point calibrated, support anti-measurement Speed of sound function to improve accuracy.

$ 667.00

Measurement range 0.8~ 300mm, accuracy up to +/- 0.04mm, support high-speed measurement 10 times/second, portable design for field use.

$ 706.00

Measurement of nonmagnetic coatings on ferrous metals, thickness range 0-6000μm, accuracy +/- 3%, built-in Probe single-handed operation, Protection Rating IP65, 60 + readings per minute.

$ 1022.00

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

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

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

Frequency 5.0MHz, support paint layer detection and emission to echo mode, Measurement range 2~ 160mm, suitable for a variety of workpiece thickness measurement.

$ 525.00

Measurement range with 0.01mm high resolution and 0.65-400 mm width supports Probe automatic identification and multiple Measurement modes, which can penetrate the thickness of the coating measurement substrate and realize the data freezing display.

$ 1610.00

Adopt magnetic Induction principle measurement, thickness range 0~ 1000μm, error +/- 3%, with low voltage prompt function, support split Probe and customized range, adapt to different curvature matrix measurement needs.

$ 243.00

Measurement range 0-20mm, accuracy 0.001mm, contact pressure 20 +/- 5kPa, suitable for paper, Cardboard and sheet material Film thickness detection, in line with a number of international standards.

$ 401.00

Echo-echo technology implementation of 0.15mm ultra-thin part measurement, resolution of 0.001mm, can penetrate 0.5mm coating measurement substrate Film thickness, support sound speed calibrated and difference mode settings.

$ 1655.00

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.