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SSM 6000
CONT
9 Status messages, trouble-shooting
9.1
Limit-value alarms
When the set limit value for one or more gas types is exceeded during measurement, the red status LED is lit up on the measured-
value display for the respective gas type. The alarm messages at port 2 are also output as digital outputs and via the Profibus / CAN
interface.
The top priority with each alarm – stay calm!
The ex-works settings are non-binding recommendations. The manufacturer does not assume any liability for the alarm
values set! Please contact the supplier of your plant in order to identify the values to be set in order to avoid damage to
the equipment!
9.2
Trouble-shooting
Measured values are not plausible
When the values measured are not plausible, you should first start a single measurement and check the flow rates.
The system can be checked for leakage by closing the stop valve at the biogas plant or kinking the biogas hose. The flow rate of the
measuring-gas processing unit should drop to zero in this case. If this is not the case, leakage air is probably drawn into the system.
This leads to elevated O
values and lower values for the other components measured.
2
If the analyzer supplies strange values even though it was checked for leakage and correct flow rates, proceed as follows:
(1) Switch the analyzer off and disconnect it from the voltage supply for around 5 seconds (turn main switch off or operate
the miniature circuit breaker). The warm-up phase cannot be interrupted by pressing the <esc> key until the analyzer
has restarted. Thereafter, a new measuring cycle must be performed.
(2) Check the sensor signals and calibrate the analyzer with correct sensor function with test gas.
If the sensor signals are outside the ranges specified (for example, 1023dig), calibrating the device does not remedy
the situation. Please contact the manufacturer in this case.
Low or lacking measured-gas flow
In order to obtain correct measuring values, the floating indicators must be contained within the marked ranges during measurement.
Flowmeter
"flow 1"
"flow 2"
If it is not possible to set the flow rates, this can be due to the following reasons:
The device is currently in stand-by mode. – Start a measurement!
-
The needle valve below the flowmeter is closed.
-
The flame protection unit and/or the measuring-gas pipe is/are clogged, or the stop valve of the biogas plant is closed. A simple
-
and quick check is possible by removing the aerosol filter on the front panel during a measuring process.
The exhaust air duct is clogged or frozen. Diagnosis is possible by disconnecting the exhaust air hose.
-
The device is defective.
-
800C-07.07.EN
(left)
50 ... 65 liters per hour
(right)
15 ... 30 liters per hour
SSM 6000C User Manual
STATUS MESSAGES, TROUBLE-SHOOTING
57
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