Download O4.2 User Manual for Pilot B operation

2.8 Gas analyzer
Figure 16: Gas measurement system PRONOVA SSM 6000 for CH4, CO2, H2S and O2.
For the measurement of the gas composition a gas analyzer SSM 6000 is used (Figure 16).
The gas analysis is performed for the gases methane, hydrogen sulfide, oxygen, and carbon
dioxide. The determined values are also stored in a data file on the computer.
The complete description of the Gas analyzer can be found in the Appendix 6.
2.9 Measurement of pH
For the measurement of the pH values it is used an industry electrode EGA 153I/S in a
special length of 650 mm. The signal is processed by the measuring amplifier and
transmitted to the computer. For the temperature compensation a resistance thermometer
Pt1000 is used. This will simultaneously measure the temperature inside the fermenter.
The measured values are stored in a data file in the computer.
The implementation of the pH measurement to the other measurement point should be
changed with the temperature sensor in the sense of an exact temperature compensation.
The measuring points that are not being used must be closed with a dummy. The pH
electrode is made of glass and therefore very fragile. Must have extreme caution when
handling.
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