Zeroing Of The Probe - NOVOTEST TP-2020 Operating Manual

2.3.2.3 «Statistics» mode
«Statistics» mode (fig. 2.10) allows viewing the following parameters of measurements: maximum
and minimum value, deviation, average value, number of measurements.

2.3.3 Zeroing of the probe

If operating conditions change (the ambient temperature changes considerably), the electrical
conductivity of the base material changes, or if the probe is switched on for the first time, the probe
should be zeroed. To do that, do the following steps:
1. Prepare an uncoated sample of the test object or structure, similar or close by geometric and
electrical properties, type of machining, or design of the tested part.
2. Then, set the probe on the prepared sample or object without coating upright, and push it down
(fig. 2.11) without wiggling.
Figure 2.11 – Setting of the probe on the uncoated object
Warning!
Do not move the probe along the test object (scan) during the measurement.
3. When the device will make measurement and the sound signal will be generated, remove the
probe from the test object. The display will show the measurement result.
4. Then, press the button «
0, depending on the type of probe and selected value).
5. Check the accuracy of the zero setting, by re-testing the product without coating. The readings
should be in the range from 0 to 2 µm.
6. Then, make a measurement on the reference block from the kit. The device readings shall
correspond to the thickness of the used block, with consideration of the permissible error. If the
device reading, calibrate the device according to c. 2.3.3.
RDC.OD.TP-2020.000 OM
Figure 2.10 – The display in «Statistics» mode
», and the display will show the message: 0.000 (00.00; 000.0; or
Coating Thickness Gauge NOVOTEST TP-2020
Operation manual
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