Coulombic Thickness Meter

The coulometric thickness gauge operates based on the principle of electrochemical dissolution, where a constant current is used to dissolve the coating. The thickness of the film is calculated according to the relationship between the dissolution time and the thickness. It is used for measuring the thickness of metal coatings and is suitable for quality inspection of surface treatments in electronic components, automotive parts, and other applications.
Selection
When selecting, consider that the measurement range should match the sample thickness. The substrate and coating materials must correspond to the instrument's electrolyte type. For samples with small curvature, choose the appropriate fixture. A conventional accuracy of ±10% is sufficient, and priority should be given to models that are simple to operate.

Terms

Standards

Instruments

Glass thickness and air interlayer thickness can be measured at the same time. Glass thickness range is 70mm, air interlayer range is 34mm, light and portable operation is simple.

$ 341.00

Using high-speed ADC data collection, resolution up to 1μm, can simultaneously measure the thickness of multi-layer coatings or coatings plus substrates, with gain automatic switching and estimated thickness setting function, Measurement range 13~ 1000μm (epoxy resin coating).

$ 1132.00

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

The instrument is dedicated to measuring the thickness of sheet materials. The measurement head contacts the workpiece to compress about 0.15mm and then has a zero reading. It can switch different display formats to meet the standard testing requirements.

$ 461.00

Suitable for 300 ℃ high temperature material thickness measurement, range 2.0~ 100mm, diaMeter 14mm, minimum diaMeter 30mm, 5MHz Frequency to achieve accurate measurement.

$ 199.00

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

Measurement range of 5-500μm with a three-blade design, LED Illumination Microscope and swirl/spin system for accurate assessment of Coating thickness and substrate defects.

$ 296.00

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

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

$ 88.00

Measurement accuracy of 0.01mm, measurement pressure of 20 +/- 0.5kpa, can maintain good parallelism, suitable for film thickness test below 20mm.

$ 509.00

Measurement range 0~ 20mm, accuracy of 0.001mm, contact pressure 20 +/- 5kpa, suitable for sheet material thickness detection with certain tightness.

$ 440.00

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

Designed for specific types of thickness Gauges, it provides accurate Adjustment and adopts standard diaphragm structure to ensure accurate transmission of thickness measuring instruments and improve the repeatability of test results.

$ 110.00

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 range 0-3000μm, error +/- 3%, easy to carry and high Stability, suitable for a variety of Coating thickness detection.

$ 461.00

Articles

Selection Differences Between Rapid Moisture Analyzers and Coulometric Moisture Analyzers
This article mainly introduces the differences between a rapid moisture analyzer and a coulometric moisture analyzer.
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.
Application of Coulometric Moisture Titrator in Moisture Detection of Electronic Components
Coulometric moisture titrators operate based on the principle of electrolysis, directly calculating the moisture content in samples by measuring the electrolytic charge without the need for calibration. In the field of electronic components, moisture can lead to issues such as corrosion and reduced insulation, making its detection critically important.
Selection Basis for Karl Fischer Titration: Volumetric vs. Coulometric Methods
There are two methods for Karl Fischer moisture titrators: volumetric and coulometric. The volumetric method calculates moisture by measuring the volume of a reagent with a known concentration that is consumed, making it suitable for samples with higher moisture content, such as those in the range of a few thousandths or more.
Paper Thickness Gauge for Determining Paper Thickness and Apparent Density
This article explains how to measure paper thickness and apparent density using a paper thickness gauge. Thickness refers to the vertical distance between the two sides of paper under standard pressure, while apparent density is calculated by dividing the basis weight by the thickness, reflecting the compactness of the paper.
Total Chlorine Content Microcoulometric Titration Detector for Pulp
This article introduces a method for detecting the total chlorine content in pulp using a microcoulometric titrator. The principle involves generating a titrant through electrolysis, which reacts with chloride ions produced from the combustion of the sample. The chlorine content is accurately calculated by monitoring the amount of electricity consumed.
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.
Karl Fischer Moisture Analyzer Determines Moisture Content in Powder Coatings
This article introduces the method of determining the moisture content in powder coatings using a Karl Fischer moisture analyzer. Excessive moisture content in powder coatings can affect the quality of the coating, leading to issues such as bubbles. The Karl Fischer method measures moisture through the quantitative reaction of iodine and sulfur dioxide, which is divided into volumetric and coulometric methods.
Karl Fischer Moisture Analyzer for Determining Water Content in Coatings
This article introduces the method for determining the water content in coatings using the Karl Fischer moisture analyzer. The principle is based on the quantitative reaction of iodine and sulfur dioxide in the reagent with water. The coulometric method is commonly used to generate iodine through electrolysis and calculate the moisture content by measuring the electrical charge.
Selection of Coating Thickness Measurement Methods: Coulometry vs. Dissolution in Electrolytic Thickness Gauges.
This article compares two techniques in electrolytic thickness gauges: the coulometric method and the dissolution method. The coulometric method measures coating thickness through electrochemical dissolution, making it suitable for single-layer metal coatings with simple operation and high accuracy. The dissolution method, on the other hand, measures thickness via chemical dissolution, making it more appropriate for multilayer or complex coatings.
Difference between halogen moisture analyzer and Karl Fischer moisture analyzer
The core difference between halogen moisture analyzers and Karl Fischer moisture analyzers lies in their measurement principles. Halogen moisture analyzers are based on the thermogravimetric method, while Karl Fischer moisture analyzers rely on titration principles, either volumetric or coulometric, which involve quantitative chemical reactions specifically targeting water molecules.