Key Considerations for Purchasing Coating Thickness Gauges
Firstly, it is necessary to understand the testing requirements, such as the testing substrate material, coating material, testing range, and accuracy requirements. If measuring under wet film or high temperature conditions, special instructions should be provided.
Secondly, there are no restrictions on the selection of measuring instrument models for measuring the thickness of plastic film, paper towels, and tin foil.
3. For workpieces with curvature, the curvature radius value should be provided to compare whether the curvature of the coating thickness gauge meets the on-site measurement requirements. If it exceeds the standard, a special probe should be configured.
4. Purchase coating thickness gauges from legitimate channels. Recently, it was learned from the Consumer Association that a batch of coating thickness gauges, models TT2260A, TT280A, and AT280, were purchased by consumers in May 2012. Due to serious measurement errors during the trial period of the products, when they were tested by a local metrology institution, they were informed that the machines did not comply with the "Metrology Law of the People's Republic of China" and the manufacturer did not obtain the "License for Manufacturing Measuring Instruments". When consumers brought the original machine to the sales location and requested a return, they were unexpectedly refused. In fact, such incidents are not uncommon in the process of purchasing testing instruments. In most cases, the letter A is added to the product model of a regular manufacturer or a similar model is used. When consumers are not familiar with the equipment model, they may mistake it for real. Therefore, please pay special attention when purchasing and consult with a regular thickness gauge manufacturer in advance.
5. The standard configuration of the coating thickness gauge includes calibration test pieces, which cannot be reduced, otherwise it will affect the subsequent calibration and measurement accuracy of the instrument.
6. For applications in special industries, different types of sensors need to be selected, such as whether they are used for measuring ultra thick coatings.
When choosing to use a magneto resistive coating measuring instrument, there should be no magnetic field around the environment.
8. The various standards of the coating thickness gauge comply with the Metrology Law of the People's Republic of China. It is recommended to purchase from a manufacturer of measuring instruments that have obtained CMC certification.
