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Power/Measure mA, Power/Measure % (Percent of 4 to 20 mA)
Choose this function to simultaneously supply power to a 2 Wire
Transmitter while displaying the 4.000 to 20.000 mA output of
the transmitter.
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 selection.
Select
mA
for the
FUNCTION
and
PWR MEAS
for the
MODE
. Choose either
mA
or
%
and whether you need the
250
Ω
HART resistor active in the loop.
Disconnect one or both input wires from the device to be
calibrated. Connect the red source lead of the PIE 525Plus to
the plus (+) input of the device and the black source lead to the
minus (-).
The PIE 525Plus supplies a nominal 24 volts DC at 24 mA to the
2 Wire Transmitter. The current passed by the transmitter will be
accurately displayed by the PIE 525Plus. Calibrate the transmitter
in the usual manner and disconnect the PIE 525Plus. Signals
above 24 mA are current limited by protection circuitry with
“OVERRANGE” flashed on the display and the red OVERLOAD
LED will flash.
Typical
2-Wire
Transmitter
+ IN - REF -OUT+
Transmitter Input
Sensor
Process Signal
Simulated Input
11.997
mA
HART
5 6
PWRM
All Milliamp Connections
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