SERVOPRO CHROMA Gas Analyser
87
04400001A / Revision 7
4.8 Calibration of the 4-20mA outputs
Click
Calibration
on the menu bar and then
4-20mA outputs
to access the
CALIBRATION-4-20MA OUTPUT CALIBRATION
menu (see Figure 41).
Figure 41 : Calibration- 4-20 mA outputs calibration menu
The 4-20mA outputs are factory configured. The setup procedure is shown below,
but it is not normally required to be adjusted in the field.
► Step 1
: Select the I/O board. The 4-20mA outputs are normally on the first
I/O board for a multiple chassis analyser.
► Step 2
: Select the output to be calibrated
► Step 3
: Connect an ammeter to the rear panel of the analyser on the
corresponding output
► Step 4
: Output a value between 0 and 100% (eg 20%) by entering the value
in the edit box to the left of the
Set
button, and then click on this button
► Step 5
: Enter the ammeter reading in the edit box to the right of
Set as low
value
and press the
Set as low value
button
► Step 6
: Repeat step 4 and step 5 with a value higher than the first (eg 80%)
only this time enter the values into the
Set as high value
edit box
► Step 7
: Press on the
Calibrate
button.
