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1621
Users Manual
14
Troubleshooting
To troubleshoot your Tester, follow the steps in Table 4.
Table 4. Troubleshooting
Step Description
1
Auxiliary electrode resistance (RH) too high
If the auxiliary electrode resistance is too high (exceeds 199 ke), it is
not possible to drive the current necessary for reliable measurements.
The measurement is blocked and the >LIMIT icon displays.
Hint: Verify that the auxiliary electrode stake is firmly embedded in the
soil, and ensure that good connections exist between all connection
points, like test leads, connectors and alligator clips.
2
Probe resistance (RS) too high
If the probe resistance is too high (exceeds 199 ke), it is not possible to
make an accurate measurement. The measurement is blocked and the
>LIMIT icon displays.
Hint: Verify that the probe stake is firmly embedded in the soil, and
ensure that good connections exist between all connection points, like
test leads, connectors and alligator clips.
3
Is your resistance measurement performed with the specified
operating uncertainty?
If the probe resistance (R
S
) or auxiliary electrode resistance (R
H
) is too
high to perform a measurement with the specified operating uncertainty,
the flashing W is displayed additionally to the measurement values.
Hint: Verify that the probe stake and the auxiliary electrode are firmly
embedded in the soil and ensure that good connections exist between
all connection points, such as test leads, connectors and alligator clips.
4
Is your resistance measurement result reliable?
To ensure the most reliable resistance measurements, the probe stake
and auxiliary electrode stake must be outside the potential gradient
area of each other and the earth ground electrode. (Refer to the
“Addendum” for information regarding potential gradient areas.)
The probe should be a minimum distance of 20 m (64 ft) from the earth
ground electrode, and the auxiliary electrode should be a minimum
distance of 20 m (64 ft) from the probe.
For some soil conditions, these distances may not be sufficient. To be
sure, take several measurements, increasing the distance with each
subsequent measurement until the measurements are approximately
the same.
5
Weak battery
If the battery is weak (<6.5 V), the supply voltage may break down
during measurement. LO-BAT icon displays.
Hint: Replace the battery. Use one 9 V alkaline (LR61) battery.
1.888.610.7664 sales@GlobalTestSupply.com
Fluke-Direct.com
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