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Using Ground Leak Detection
mA OUT, % OUT (Percent of 4 to 20 mA)
Find current leaks in loops caused by ground faults, moisture or
corrosion. The 525Plus simultaneously supplies power to a 2
Wire Transmitter (or loop with a transmitter) while displaying the
4 to 20 mA output and the amount of current leaking in the loop.
1) Move the power switch
w
to READ then Double Click the
EZ-DIAL knob to get into the Menu. Turn the knob
e
to scroll
through the settings and press the knob to make your selec-
tion. Select
mA
for the
FUNCTION
and
PWR MEAS
for
the
MODE
. Choose either
mA
or
%
.
2) Turn the knob
e
until the menu below appears.
3) Turn the knob
e
to scroll through the settings and press the
knob to make your selection. Turn on the
LEAK DETECT
.
4) Connect the red source lead from the mA (+) jack of the
525Plus to the plus (+) input of the device and the black
source lead from the mA (-) to the minus (-).
mA DIAGNOSTIC
> EXIT (2/3)
LEAK DETECT OFF
ON
The PIE 525Plus supplies a
nominal 24 volts DC at 24 mA
to the 2 Wire Transmitter or
loop. The current passed by
the transmitter will be
accurately displayed by the
525Plus along with an
indication of leakage current
at the top of the display. If
there is an uncontrolled loop
caused by a transmitter with upscale burnout and a sensor that
is burned out or missing, or a short in the loop wiring, the
525Plus will display "OVER RANGE”
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