Practical guidance for selecting instruments, understanding measurement methods, and improving inspection workflows.
Coating thickness error falls into five categories: instrument error (calibration status, temperature drift), operator error (contact pressure, coupling, angle), workpiece error (substrate material, roughness, curvature, edge), method error…
Range selection follows the “typical thickness in the 20%-80% band” rule. Common coating-thickness bands are 0-1250μm (thin coatings and anodising), 0-2000μm (general industrial), 0-3000/5000μm (high-build and pipeline anti-corrosion),…
Ultrasonic thickness readings depend heavily on coupling: pick the couplant for the job, use the right amount, spread it evenly; keep the probe perpendicular, pressure steady, no sliding;…
Dry-battery models are low cost, replaceable on site and suit low frequency and remote work; built-in Li-ion models need no replacement and suit high-frequency production lines and situations…
An auditable thickness acceptance report should contain: project and zone identification, gauge model and serial number, calibration status and certificate number, method and environmental conditions, spot positions and…
The US coating-thickness gauge market is two-tier: the DIY tier clusters at $18-250, the professional industrial tier starts at $740 and rises to several thousand dollars, and the…
Most errors in coating and wall-thickness measurement come from procedure, not the instrument: wrong principle for the substrate, no zero adjustment, measuring uncured coating, missing shim verification, poor…
Ultrasonic thickness gauges divide by capability into four classes: general-purpose covers routine wall thickness, wide-range covers thick walls and high accuracy, coating-penetrating covers painted workpieces without grinding, and…
A coating thickness gauge non-destructively measures the thickness of a coating on a metallic or non-metallic substrate. Which principle applies depends on the substrate material, and reading reliability…
