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O2 monitoring (alarms)
O2: Monitoring during purging / after ignition
O2: Monitoring of MIN1, MIN2 and MAX alarms
O2: Limit value alarm MAX
O2: Delay time for alarm MAX
O2: Limit value alarm MIN1
O2: Delay time for alarm MIN1
O2: Limit value alarm MIN2
O2: Delay time for alarm MIN2
O2: Safety shut-off at alarm MIN2
O2: Monitoring dynamic probe test
O2: Limit value probe dynamics test 1
O2: Limit value probe dynamics test 2
O2: Automatic alarm reset
Parameter
Description
Entering 0 to 20 vol.% corresponds to 0 to 2000 as a parameter value.
Defines the limit value for the probe dynamics test 2.
Clogging of the probe can cause the O2 measured value to increase slowly but continuously, which means that the dynamic probe test is not triggered. For this reason, a dynamic test is triggered if the measured O2 value does not fall by more than 0.2% by volume of O2 within a period of 15 minutes.
The dynamic test forces an air deficiency rate of 33%. If no change in the measured O₂ value is detected after one minute, the air deficiency is increased to 66%. If a change cannot be detected after another minute, the air deficiency rate is increased to 99%. If there is still no change in the measured O₂ value, an alarm is triggered and O₂ correction is deactivated. The air deficiency is limited to the defined minimum O₂ correction value.
Properties
Floating point
0
20
Vol.%
Reference
2038
DOC-729171498