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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
Output card
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)
Metering Pump (Load)
Page 87 of 102
Programming the Outputs
4.00
Figure 63
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