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Probe EC Signal Testing – The DW-- EC – Force probe is shipped with an EC dipole
tester (Part No. 29689) that will enable you to quickly check the probe and instrument
to ensure the EC is functioning correctly. To perform this test, do the following:
1) Press one bolt of the dipole tester to the side of the probe tip and the other to
the center brass dipole. (see figure 5 below) Depending on if the brass or the
silver bolts are used the EC reading will be high or low. The high and low
readings may vary depending on contact with the probe tip and the probe tip
cleanliness. This is fine; the import thing is that the brass reading be lower
than the silver. The difference between the two readings will be hundreds of
EC values.
Figure 4
Figure 5
6-3
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