Programming the Outputs
Page 87 of 102
10.16.6 Calibration
of
a
4-20mA
Output
To calibrate 4-20mA output you will need a
Multimeter set in mA mode placed in series with the
output card and a load. See
Figure 36
1- From the HOME display, press the CAL key
2- Using the UP and DOWN ARROW keys
choose the 4-20mA Output you would like to
calibrate, then press OK.
3- Observe the reading on your mA meter that
is in series within your circuit. It should be
close to 4.00 mA. Use the ARROW keys to
match the controller display with your meter
reading and press OK.
4- Press F1 to calibrate 20.0mA output. The
display should read about 20.0mA.
5- Use the ARROW keys to match the
controller display to your meter reading then
press F1 to save.
6- Press F1 to go to Next screen.
7- Choose another output or press ESC to
return to the main display
If the calibration was not successful (calibrate limits
@ +/-0.5mA @ 4mA & +/-15% on span (about +/-
2.4mA).
) it will display “Sensor fault Overrange”,
consider three choice after fault (
RECAL
to
recalibrate,
IGNORE
to ignore the fault and accept
calibration,
RESET
to reset calibration back to
factory defaults)
Output card Metering Pump (Load)
4.00
Figure 63