Practical Instrument Electronics 820 - Manual (Page 14)

Page 12
Milliamp Output Signal
Controller
Transmitter
P/I
DCS
SOURCE
HI
SET
LO
READ mA, READ % (Percent of 4 to 20 mA)
Choose this function to measure from 0.00 to 24.00 milliamps or
-25.0 to 125.0%.
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 READ for the
MODE. Choose either mA or % and whether you need the 250
Ω
HART resistor active in the loop.
Connect the red input lead (+) of the PIECAL 820 to the more
positive point of the break and the black input to the more
negative point.
Signals below 0 mA or open circuits are indicated by 0.00 mA
(-25.0%) on the display. Signals above 24 mA are current limited
by protection circuitry with “OVERRANGE” flashed on the
display and the red OVERLOAD LED lit.
The PIECAL 820 measures the input signal and constantly
updates the display with the current reading. Move the
EZ-CHECK switch
q to MAX to see the highest reading and to
MIN to see the lowest reading. Press and hold the knob e to
clear the MAX and MIN readings.
All milliamp connections