Practical guidance for selecting instruments, understanding measurement methods, and improving inspection workflows.
For coatings on concrete and cement-mortar surfaces choose DR200A (40-1200μm); for coatings on wood, plastic and glass surfaces choose DR200B (18-1000μm, with a small probe). Both share the…
Identifying the substrate takes three steps: magnet test, material confirmation, geometry check. Ferromagnetic substrates use the magnetic method, non-magnetic conductive substrates use eddy current, and non-metallic substrates use…
Transmittance meters split by form into split portable (suited to vehicle windows and field measurement), benchtop (suited to lenses and small workpieces) and tri-path-optics models (covering visible, blue-violet…
An accuracy expression has a proportional term and a fixed term; you must convert it to a specific thickness point to compare. Calibration is done by the manufacturer,…
Gloss is a relative quantity and must be compared at the same incidence angle; 60° is the universal angle, 20° suits high-gloss surfaces and 85° suits matte surfaces;…
Range selection is based on the 80th percentile of typical thickness, keeping it in the 20%-80% band; once over-range the reading enters a non-linear region that cannot be…
Before buying a coating thickness gauge, confirm one by one: substrate and principle, range and accuracy expression, instrument type, calibration-certificate form and traceability body, standards-conformance documents, unit switching,…
Ultrasonic thickness measurement converts thickness from echo time, so coupling quality and sound-velocity setting decide reading reliability. The Echo-Echo penetrating mode measures substrate wall through paint, but covers…
The completeness of a thickness-measurement system relies on four classes of accessories: the probe (replaceable and wear part), the reference shim (runs per-shift verification), the couplant (the medium…
