Use and Maintenance FAQ: Troubleshooting and Care
Daily care of a thickness gauge centres on four parts: the probe (wear part), the foil (needs verification), the battery (affects stability) and the body and connectors; most…
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Technical Articles
Practical guidance for selecting instruments, understanding measurement methods, and improving inspection workflows.
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ASTM D6132-13(2022): The US Standard for Ultrasonic Coating Thickness Measurement
ASTM D6132-13(2022) specifies the nondestructive measurement of applied organic coatings using an ultrasonic coating thickness gauge, aimed specifically at non-metallic substrates (plastic, wood, FRP, concrete, glass) — substrates…
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Measuring on Curved, Small and Edge-Adjacent Surfaces: Special-Geometry Techniques
Errors on curved, small and edge surfaces come from incomplete contact geometry: convex reads high, concave reads low, edges read unstable; countermeasures include a small-diameter probe, calibration on…
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NIST Traceability and Calibration Certificates: Normal Form vs Long Form
A calibration certificate is the pass to get a coating thickness gauge onto a professional procurement list. US standards require dry-film gauges to carry a certificate traceable to…
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Correcting Measurements on Rough Surfaces: From Measurement to Acceptance
Rough surfaces (blast-cleaned steel, hot-dip galvanising, concrete) make readings read systematically high; the correction is to first measure the base metal reading on uncoated substrate of the same…
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Selecting a Coating Thickness Gauge in 7 Steps: Turn Selection Into Questions You Can Answer
The correct order is: substrate material → coating type → thickness range → working environment → accuracy requirement → data capability → compliance and certificates. Skipping the first…
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Temperature, Humidity and Cure State: Environmental Factors That Move the Reading
Ambient temperature affects the gauge electronics and the coating state, humidity affects surface coupling and the sound speed in substrates like concrete, and the coating cure state directly…
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Anodized Aluminum Oxide Layer Thickness: The Standard Eddy Current Application of ISO 2360
The anodic oxide layer is an insulating oxide grown in place on the aluminium surface, with a clean interface and no primer interference — the ideal eddy current…
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Magnetic Induction Coating Thickness Measurement: How a Magnetic Field Becomes a Number
Magnetic induction uses a probe to generate a low-frequency magnetic field and reads how the ferrous substrate responds to it, deriving the thickness of the non-magnetic coating from…