
5.2.2
Calibration Recommended LED
This LED when the system determines that a calibration is recommended.
Note
The
Calibration Recommended
alarm was discontinued in 2014. It is still available on
the Rosemount
™
6888 product.
5.2.3
Test points
Test points 1 through 6 allow you to monitor the following with a multimeter: the heater
thermocouple, the O
2
cell millivolt value, and the process O
2
.
•
TP1 and TP2 monitor the oxygen cell millivolt output, which equates to the percentage
of oxygen present.
•
TP3 and TP4 monitor the heater thermocouple.
•
TP5 and TP6 monitor the process gas or the calibration gas procedures.
Figure 5-4: Test Points
5.2.4
Cal LED
The Cal LED is on steady or flashing during calibration.
Keys
Use the
INC
and
DEC
keys to set the values of the calibration gases. Attach a multimeter
across TP5 and TP6. You can now monitor the calibration and process gases. Press the
INC
or
DEC
once to switch the output from the process gas to the calibration gas. Press
INC
or
DEC
a second time to increase or decrease the calibration gas parameter. If the keys have
Reference Manual
Start up and operate transmitter with membrane keypad
00809-0100-4340
October 2019
Rosemount Oxymitter 4000
89
Summary of Contents for Rosemount Oxymitter 4000
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