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When creating a new batch, you can take over the calibration from an existing batch. This is
recommended only, if exactly the same measuring task is involved. Please see also section
11.2.3.1 “Creating a new batch”.
For a new measuring task, it is vital to calibrate for this task. If material cross-sections of the
sample to be measured are available, it is recommended to use the optical evaluation of such
cross-sections for the calibration procedure.
Taking readings without using a valid calibration only serves guiding purposes (to obtain an A-scan
image, for instance). Reliable readings (numerical coating thickness values) will certainly not be
provided.
6.5 Taking Readings
6.5.1
How to use the sensor
To ensure reliable readings and to ease the measuring procedure, the following recommendations
should be observed:
Connect the sensor prior to switching the gauge on.
Do not pull the sensor cable. For disconnecting the cable from the gauge or sensor, grasp the
corrugated sleeve of connector and pull to disconnect.
The measuring surface of the sensor is made of a special plastic material ensuring an optimum
ultrasonic energy transfer. Keep the sensor away from organic solvents, unsuitable couplants,
hot or sharp-edged items.
The sensor has been designed for measuring smooth and flat surfaces. Rough surfaces may
damage the sensor or lead to erratic readings. Scratches on the sensor surface have an
adverse effect on sensor resolution and reproducibility of readings.
After measurement and if you want to take the gauge out of service, use a moist and soft cloth
for cleaning the sensor surface. Dried up residue of couplant on the sensor is hard to remove
and the sensor might be damaged when trying to clean from such residue.