If you are using SIPROCESS GA700 devices in critical processes, observe the following
information:
• Monitor the limits externally via the control system.
• If an option module 2.1 is installed, read out the device status via the digital outputs of the
option module.
• Use an available manual measuring range switchover instead of the autoranging.
• Only use the "Total" parameter with the "O" setting for the measuring range switchover.
• If you use the "Correction of cross-interference" and "External pressure compensation"
functions, store suitable substitute values.
• Only access the measured value via an analog output.
3.4 Measuring high oxygen concentrations
Note
Measuring high oxygen concentrations
For the measurement of high O
2
concentrations in excess of 25%, it is absolutely necessary that
all parts that come in contact with the sample gas are free of oil and grease and do not contain
any particles that could react with O
2
.
We highly recommend you use specially cleaned analyzer modules with the "Cleaned for O2"
option for such measurements.
General information
3.4Measuring high oxygen concentrations
Wall-mounted device
20 Operating Instructions, 07/2023, A5E31930403-AB
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