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6.2 Probe zero
The next step is to perform a probe zero.
necessary function that must be done prior to calibration. It should be done on a
regular basis. In fact, the CMX
intervals during operation if it hasn't been done. If the CMX
all the measurements taken may be in error by some fixed value. When the CMX
is using the auto zero (electronic zero), the CMX
mode. However, when the manual zero is being used, the CMX
echo mode in order to perform the zero. The CMX
occurs by simply forcing the gauge into this mode when zero. Therefore, if the
DL
CMX
performed, the CMX
performing the zero. While this is a very convenient feature of the CMX
should be sure to check the measurement mode following calibration to be sure the
DL
CMX
The CMX
1) Off Block Zero (Automatic Probe Zero) – When this feature is enabled the
CMX
disk or block.
2) On Block Zero (Manual Probe Zero) – When this feature is enabled the
transducer must be placed on the probe zero disk (battery cover located on the
top of the unit.
Both zero procedures are outlined as follows:
1) Be sure all couplant has been removed from the face of the transducer.
1.800.544.2843
DL
CMX
is in the echo-echo measurement mode and a manual zero is being
DL
will put the gauge into pulse-echo mode automatically before
is in the desired mode. The following steps outline both of these techniques.
DL
is equipped with two zero options:
DL
will do an electronic zero automatically, eliminating the need for a zero
Performing an Auto Probe Zero (Off Block)
Coating Probe Identified
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15
10
20
5
25
0
30
High Performance Material & Coating Thickness Gauge
The zero function is a very important and
DL
has been programmed to force this issue at regular
DL
can be in any measurement
DL
Coating Probe Not Identified
43
DL
is not zeroed correctly,
DL
must be in pulse-
will also see to it that this
DL
, the user
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