GE XMO2, User Manual

Page: 39 / 196

September 2007
3-8 Startup & Operation
Changing the 4-20 mA
Analog Output Range
The XMO2 Calibration Sheet shipped with the unit lists the 4-20 mA
analog output range that was set at the factory. To change this range
using RS232 digital communication, perform the following steps:
1. If the XMO2 is not set up for Easy Menu Entry , enter the XMO2
Basic Menu by slowly keying in
[Shift]+[1]
or
[Enter], [1], [2], [3]
.
Refer to the menu map in Figure C-1 on page C-1 for the options
available in this menu.
2. Press [N] repeatedly until the following display appears:
Note:
The low input value is the %O
2
in the sample gas that will
generate an analog output current of 4.00 mA.
3. At the above screen, do one of the following:
•
Press
[Y]
or
[Enter]
to accept the current low input value (0.00 in
the above example). Then, go to Step 5.
•
Use the numeric keys to enter a new low input value (5.00 in
the example that follows). Then, go to Step 4.
4. If you entered a new low input value:
5. Continue the procedure as follows:
Note:
The high input value is the %O
2
in the sample gas that will
generate an analog output current of 20.00 mA.
BASIC MENU
Press [Y] or [Enter] to set the low
(4 mA) input value.
Set Low Input Value?
mA Output 4 mA Value
%O2 [0.00]:
mA Output 4 mA Value
Press [Y] or [Enter] to accept the
new low (4 mA) input value.
%O2 [0.00]:5.00
BASIC MENU
Press [N] to move to the next
Basic Menu option.
Set Low Input Value?
BASIC MENU
Press
[Y]
or
[Enter]
to set the high
(20 mA) input value.
Set High Input Value?
mA Output 20 mA Value
%O2 [100.00]: