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You now need to perform a probe zero before taking measurements.
7.2 Transducer - Zeroing
Setting the zero point for the transducer is important for the same reason that setting the zero on a
mechanical micrometer is important. If the zero point of the transducer is not set correctly, all of the
measurements the gauge makes will be in error by some fixed number. When the zero point of the
transducer is set, this fixed error value is measured and automatically corrected for in all
subsequent measurements.
Though the gauge will remember the last zero point, it is generally a good idea to set the zero point
whenever the gauge is switched on, as well as any time a different transducer is used. This will
ensure that the zero point of the instrument is always correct.
The zero probe routine must be done prior to calibration. If you do not conduct the zero probe
routine, your gauge will force you to conduct the routine at regular intervals during operation.
In order to perform the zero probe routine, your gauge must be in pulse-echo mode.
The following steps describe the zero probe procedure:
1. Press
to display the measurement screen.
2. Ensure the gauge is in pulse-echo mode (P-E).
3. Remove all couplant from the face of the transducer and check
that the wearface of the transducer is clean and free of any
debris.
4. Apply a drop of couplant on the transducer and place the
transducer in steady contact with the probe zero disk (the
battery cover located on the top of the unit), and obtain a
steady reading.
The display should show some thickness value, and nearly all
the bars of the stability indicator should be illuminated.
Note: The value that is displayed will change depending on the
current velocity setting in your gauge. Disregard the value
displayed; it is not important. What is important is accurately
performing these steps to ensure reliability of the zero
calculation.
5. Press
, scroll to the PROBE menu, scroll to the ZERO
TRANSDUCER function and then press
The ZERO TRANSDUCER screen is displayed.
6. Press
(or
When the probe zero is completed the measurement screen is displayed.
7. Remove the transducer from the probe zero disk.
Your gauge should now be zeroed.
to cancel).
.
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