Practical Instrument Electronics 820 - Manual (Page 20)

Page 18
Resistance Source
Choose this function to provide a simulated resistance into any
device that measures resistance.
Move the power switch w to SOURCE then Double Click the
EZ-DIAL knob to get into the Double Click Menu. Turn the knob
to scroll through the settings and press the knob to make your
selection. Select OHMS for the FUNCTION, 400Ω or 4000Ω for
the RANGE.
Disconnect all sensor wires from the devices to be calibrated
and connect the PIECAL 820 to the inputs of the device using 2,
3 or 4 wires.
Instantly output your SPAN and ZERO output settings by moving
the EZ-CHECK switch between HI and LO. You may also select
any third output setting (such as mid-range) using the SET
position on the EZ-CHECK switch. The output is adjusted in
0.1Ω/1Ω increments by turning the knob
e . Press and turn the
knob for faster dialing with 10.0Ω/100Ω increments.
2, 3 & 4 Wire Resistance Connections
Process Calibrator
mA ∙ V ∙ TC ∙ Ω ∙ RTD ∙ Hz
SOURCE
HI
SET
LO
OFF
MAX
READ
MIN
READ
OVERLOAD Hz SYNC
Double Click
Menu
Push & Turn
for
Fast Dialing
Push & Hold
to
Store/Step
READ
Ω
250.0 HI
Instrument with
Resistance Input
Controller
Transmitter
PLC