Coating Thickness Gauges & Inspection Equipment
Coating thickness gauges provide a very simple and precise method of measuring the dry film thickness of paint coatings, metal plating, anodising and zinc galvanizing. Measurement of these coatings is important to ensure compliance with specifications and to minimise wastage of materials. Other inspection equipment for ensuring the correct application and quality of coating systems includes Dew Point Meters, Soluble Salt Testers and Surface Profile Gauges (Testex Replica Tape Readers).
TWO MODELS - PosiTest DFT Ferrous measures non-magnetic coatings on steel - PosiTest DFT Combo measures both non-magnetic coatings on steel AND non-conductive coatings on aluminium, brass, etc. Automatically recognizes the substrate.
Coating Thickness Gages for ALL Metal Substrates. Rugged, fully electronic coating thickness gauges use magnetic and eddy current principles to measure coating thickness on both ferrous and non-ferrous metals, accurately and quickly.
Coating Thickness Gauges for Non-Metal Substrates. Non-destructively measures a wide variety of applications using ultrasound. Measure coating thickness over wood, concrete, plastic, and more. Advanced models measure up to 3 layers with graphics.
PosiTector Inspection Kits contain a PosiTector gauge body (Standard or Advanced) and 3 probes - coating thickness, environmental and surface profile, plus accessories in a convenient hard shell carrying case. Build your own - custom kits also available.
Measures and records the peak to valley surface profile height of abrasive blast cleaned surfaces. 50 readings per minute for quick and accurate measurement of surface profile over large flat surface areas. Calibration certificate and 2 year warranty.
The PosiTector SST Soluble Salt Tester measures the concentration of soluble salts (salt contamination) on metal surfaces in accordance with ISO 8502-6, 8502-9. 2 year warranty. Supplied with calibration certificate.
Electronic Surface Profile Gage for Blasted Steel and Textured Coatings Digital spring micrometers measure and record surface profile parameters using Testex Press-O-Film replica tape producing a more accurate peak-to-valley height measurement.
The PosiTest PC Powder Checker measures uncured powder coatings using non-contact ultrasonic technology to predict a cured thickness.
COATING THICKNESS MEASUREMENT INSTRUMENTS GUIDE
The choice of coating thickness gauge is dependent on the type of coating, shape and type of substrate, coating thickness, equipment cost and the precision required. Techniques used include dry film thickness (DFT) methods such as magnetic, eddy current, and ultrasonic. Powder checkers are also available for measuring uncured powder coatings to predict a cured thickness. The four main types of coating gauges are - magnetic pull-off, electromagnetic induction, eddy current and ultrasonic. Magnetic gauges measure the thickness of non-magnetic coatings on ferrous substrates such as steel and iron. Magnetic pull-off gauges use a permanent magnet. As the coating thickness increases, the pull off force reduces and this measurement of force is displayed in the form of a graduated scale from which the coating thickness can be read. Electromagnetic induction instruments use a probe which produces a magnetic field. The flux density produced is relative to the distance between the probe and the metal substrate. The instrument converts the flux density measurement to a paint thickness reading on the instrument display. Eddy current instruments measure the thickness of non-conductive coatings on non-ferrous metal substrates. The instrument probe produces eddy currents on the test surface. The paint thickness and the substrate characteristics affect the magnitude of the eddy currents. The eddy currents create an opposing electromagnetic field and this is measured by the main coil or by a second adjacent coil. Ultrasonic instruments are used to measure coating thickness on non-metal substrates (plastic, wood, etc). The ultrasound wave is travels through the coating and substrate and is reflected back to the probe. The instrument measures the time interval between the excitation pulse that generated the sound wave and the first returning echo. This time interval is then converted to a thickness reading on the instrument display.
DMV UK are specialists in portable testing equipment including ultrasonic thickness gauges, coating thickness meters, dewpoint meters, gloss meters, hardness testers, force gauges, intrinsically safe phones & computers, shore durometers & surface roughness testers.