Instruction Manual
IM-106-350C, Rev 2.2
July 2008
3-3
Hazardous Area Oxymitter 5000
Read O
2
Concentration
The O
2
range of the Oxymitter is set through the fieldbus interface using the
A1 function block.
Refer to Appendix D for more information on using the A1 function block.
Once the cell is up to operating temperature, the O
2
percentage can be read.
1. Access TP5 and TP6 next to the membrane keypad. Attach a
multimeter across TP5 and TP6. The calibration and process gases can
now be monitored. Pressing the INC or DEC once will cause the output
to switch from the process gas to the calibration gas. Pressing INC or
DEC a second time will increase or decrease the calibration gas
parameter. If the keys have been inactive for one minute, the output
reverts to the process gas. When a calibration has been initiated, the
value at TP5 and TP6 is the % O
2
seen by the cell. Oxygen levels, as
seen on the multimeter, are:
8.0% O
2
= 8.0 VDC
0.4% O
2
= 0.4 VDC
NOTE
The maximum reading available at TP5 and TP6 is 30 VDC. While the
Oxymitter will measure concentrations up to 40% the test point output will
reach a maximum of 30 VDC at a 30% oxygen concentration.
2. FOUNDATION fieldbus.
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