Calibrating The Oxygen Sensor - PRONOVA SSM 6000 User Manual

SSM 6000
CONT
7.7

Calibrating the oxygen sensor

Besides the normal calibration routine, it is also possible to adjust the sensor sensitivity of the oxygen channel even without test
gas because the sensor sensitivity is calibrated using ambient air and because the zero point of the oxygen sensor features long-
time stability. This calibration process can also be performed by the user of the equipment at regular intervals.
In order to calibrate the oxygen sensor without test gas, proceed as follows:
Disconnect the biogas hose from the measuring-gas inlet, so that ambient air is drawn in.
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In order to prevent biogas from escaping, the biogas outlet of the plant should be closed.
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Select the GAS TYPES menu option and select "CAL" for oxygen.
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IMPORTANT! Selection of the other gas components is not permitted during this procedure!
SETUP MODE:
_ MEASUREMENT
_ CALIBRIATION
_ SYSTEM
Thereafter, confirm the START GASCAL prompt by pressing the <enter> key.
The display now once again shows the prompt to supply zero gas (ambient air) – press the <enter> key to confirm.
CALIBRATION
CONNECT ZERO GAS
<enter> TO PROCEED
The calibration cycle is started. Press the <esc> key at the end to confirm.
Thereafter, perform one measurement with ambient air as a check. The analyzer should display an oxygen concentration of around
20.9% by volume.
Thereafter, re-connect the biogas hose to the measuring-gas inlet and open the stop valve.
When the system is in stand-by mode, the normal measuring mode can be reactivated by pressing the <enter> key.
800C-07.07.EN
CAL. OPTIONS:
_ GASTYPES
_ CAL. GASCONC.
_ START GASCAL.
CALIBRATION
S1: ZERO GAS
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SSM 6000C User Manual
CALIBRATION
GASTYPES:
_CH4: _O2 : CAL
_H2S: _CO2:
CALIBRATION FINISHED
<ESC>
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