Siemens SIPROCESS GA700 Quick Start Manual page 75

Note
Signal frequencies with two OXYMAT 7 analyzer modules
If you install a second OXYMAT 7 analyzer module, the operating and signal frequencies of
the two OXYMAT 7 analyzer modules have to differ from each other.
• Check the set frequencies of both OXYMAT 7 analyzer modules.
• If necessary, adjust the frequencies of the modules again. We recommend:
– A frequency of 8.33 Hz for Module 1
– A frequency of 10.00 Hz for Module 2.
You can find additional information in the bibliography in:
• Table References 1 - Operating Manuals LUI (Page 135)
• Table References 2 - Operating Manuals PDM (Page 135)
Note
Zero point error because of surrounding gases
Keep the ambient air of the analyzer section free from the measured gas component;
otherwise, measurement results will be affected. Gases which exhibit cross-sensitivity to the
measured gas component must also not be present in the ambient air.
Note
OXYMAT 7 pressure correction
The OXYMAT 7 analyzer modules have an internal pressure sensor for correcting the effect
of pressure on the measured value.
In the case of OXYMAT 7 the pressure sensor is connected with the sample gas path and
therefore always measures the current sample gas pressure.
Note
ULTRAMAT 7 pressure correction
If you are using the internal atmospheric pressure sensor, make sure that the pressure drop
caused by the piping system at the sample gas outlet does not exceed 10 hPa (large line
diameter, short line length). In analyzer cabinets and analyzer enclosure, you can connect
the pressure transducer to the atmosphere in order to record only the atmospheric pressure
change.
Note
CALOMAT 7 pressure correction
With CALOMAT 7, you can implement required pressure correction using an external
pressure sensor.
Quick Start
Compact Operating Instructions, 05/2018, A5E31805656-06
7.2 General information on commissioning
Commissioning
75