How is it possible that the coating thickness gauge could occasionally be off?
This is a really broad inquiry. because the instrument's inaccuracy can be attributed to a number of factors. The following are the main causes of erroneous measurement for the coating thickness gauge alone.
(1) Strong magnetic field interference. We conducted a straightforward experiment and found that the measurement will be significantly tampered with when the equipment operates close to an electromagnetic field of roughly 10,000 V. It might experience the crash phenomenon if it is very close to the electromagnetic field.
(2) Human elements. The situation frequently occurs to new users. The coating thickness gauge's ability to transform a slight change in magnetic flux into a digital signal allows it to measure coating thickness down to the micron level. The probe may stray from the body being tested during the measuring procedure if the user is unfamiliar with the instrument. This will modify the magnetic flux and result in an incorrect measurement. Therefore, when using the instrument for the first time, it is advised that users and friends first grasp the measurement procedure. The measurement is significantly impacted by the probe's positioning. The probe should remain parallel to the sample's surface throughout the measurement.And the probe should not be placed for too long, so as not to cause the interference of the magnetic field of the matrix itself.
(3) While doing system repair, an adequate substrate was not chosen. The substrate must have a minimum of 7mm of facet and 0.2mm of thickness. Measurements below this threshold are not accurate.
(4) The impact of any compounds that are linked. The device is sensitive to chemicals that adhere and prevent the probe from getting close to the overlay surface. To guarantee that the probe is in direct touch with the surface of the covering layer, the attached materials must be taken out. The surface of the chosen substrate must also be bare and smooth before systematic adjustment can be carried out.
(5) The instrument fails. At this time, you can communicate with technicians or return to the factory for repair.
