Overview
Plastic calibrated diaphragms are an economical alternative to coated metal plates and are suitable for all Type 2 electronic Coating thickness gauges. With a calibrated accuracy of +/- 2 μm (+/- 0.08 mil), they can be used for calibrated film thickness gauges when placed on a smooth metal surface (zero plate). Non-calibrated plastic specimens (foils) are used for quick operation checks and practice measurements of the instrument.
Features
1) Simulate the coating on a specific substrate material or shape, which is convenient for regular verification of the performance of the measuring tool and meets the requirements of some international test methods.
2) Applicable to all Type 2 Electronic Coating thickness gauges.
When placed on a hot or abrasive surface, the probe is protected from damage or premature abrasion.
4) Film thickness measurement can be placed on top of the soft or Tack film without the need for a thickness gauge probe to press down the film.
5) Dimensions are 3 x 8 centimeters.
Principle
This plastic calibrated diaphragm calibrates film thickness gauge by its known and precise Film thickness (e.g. 50 μm, error +/- 2 μm). When in use, the diaphragm is placed on a smooth metal surface (zero plate) and the film thickness gauge measures its Film thickness to achieve instrument calibrating or performance verification.
Applications
Film thickness gauge calibrating, performance verification, operation practice
Standards
Some international testing methods
Steps
Prepare a smooth metal surface (zero plate).
2) Place the plastic calibrated diaphragm on the metal surface.
3) Film thickness measurement using type 2 electronic Coating thickness gauge.
4) Compare the measurement with the nominal Film thickness (e.g. 50 μm) and error margin (+/- 2 μm) of the diaphragm to calibrate or verify the instrument.
Notice
• Non-calibrated plastic specimens (foils) can be placed on uncoated metal substrates, but are "not suitable" for use with magnetic pull-out thickness gauges.
• Please ensure that the metal surface (zero plate) is smooth and clean before use.
• Please correctly judge the instrument status according to the nominal Film thickness and error range.
