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Practical Instrument Electronics
Tel: 585.872.9350 • Fax: 585.872.2638 • [email protected] • www.piecal.com
Operating Instructions
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 to 20 mA output of the transmitter.
Move the power switch
w
to READ then Double Click the EZ-DIAL knob to get
into the Double Click 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 830PM from jack (5) to the plus (+) input of the device and
the black source lead from jack (6) to the minus (-).
The 830PM 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 830PM.
Calibrate the transmitter in the usual manner and disconnect the 830PM. Signals
above 24 mA are current limited by protection circuitry with “OVER RANGE” on
the display and the red OVERLOAD LED lit.
5
MAX
READ
MIN
READ
6
-
+
-
3 2
-2
OFF
HI
SET
LO
SOURCE
Hz SYNC
EZ-DIAL
Double Click
Menu
Push & Turn for
Fast Dialing
Push & Hold to
Store/Step
piecal.com
EZ-CHECK™
PRACTICAL INSTRUMENT ELECTRONICS
MODEL 830PM
Process Calibrator
Loop Diagnostics · Transmitter Supply
mA · V ∙ pH · TC · Ω · RTD · Hz · Pressure
Pressure
Module
All mA∙ Read V
TC
Source & Read mV
Hz
Source V
pH
RTD • Ohms
OVERLOAD
4
1
+
+1
Transmitter Input
Sensor
Process Signal
Simulated Input
Typical
2-Wire
Transmitter
- IN +
REF
+OUT-
5 6
+
-
%
mA
28.30
PWRM