
Figure 2-21: Rosemount Hazardous Area Oxymitter 4000 Gas Connections
A. Calibration gas
B. Reference air
2.4.2
Calibration gas
CAUTION
Failure to use proper gases will result in erroneous readings.
Do not use 100 percent nitrogen as a low gas (zero gas).
Emerson suggests that gas for the low (zero) be between 0.4 percent and 2.0 percent
O
2
.
Do not use gases with hydrocarbon concentrations of more than 40 parts per million.
Use two calibration gas concentrations with the transmitter: low gas - 0.4 percent O
2
and
high gas - 8 percent O
2
WARNING
If using a Rosemount IMPS 4000 or SPS 4001B, install it in a non-hazardous, explosive-free
environment.
Reference Manual
Install
00809-0100-4340
October 2019
Rosemount Oxymitter 4000
67
Summary of Contents for Rosemount Oxymitter 4000
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Page 184: ...Optional accessories Reference Manual October 2019 00809 0100 4340 184 Emerson com Rosemount ...