Measuring High Oxygen Concentrations - Siemens 7MB3000 Series Operating Instructions Manual

General information
3.4 Measuring high oxygen concentrations
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 "Off" 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
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
We highly recommend you use specially cleaned analyzer modules with the "Cleaned for O2"
option for such measurements.
20
concentrations in excess of 25%, it is absolutely necessary that
2
.
2
Operating Instructions, 07/2023, A5E31930403-AB
Wall-mounted device