Practical Instrument Electronics 820-ELITE - Manual (Page 22)

Page 20
pH SOURCE
Choose this function to provide an output from 0.000 to 14.000
pH @ 25°C (77°F) which corresponds to 414.12 to -414.12 mV.
The source current is a nominal 24 mA to provide the driving
power to your pH receivers.
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 pH for the FUNCTION.
Connect the output leads of the PIE 820-ELITE to the inputs of
the device being calibrated, making sure to check polarity. Red
lead from the mV (+) jack of the 820-ELITE to the plus (+) input
and black lead from the mV (-) jack to the minus (-) input. You
may also use the optional adaptor jack (020-0###) if you require
BNC connections.
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 DIAL
position on the EZ-CHECK switch. The output is adjusted in
0.001 pH increments by turning the knob
e . Press and turn the
knob for faster dialing with 0.100 pH increments.
Process Calibrator
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
V
10.000
HI
mA ∙ V ∙ pH ∙ TC ∙ Ω ∙ RTD ∙ Freq ∙ Pressure
Voltage Receiver Input
Controller
Transmitter
Computer
Logger
DCS
V & mV Source