
Instruction Manual
748467-A
January 2002
Rosemount Analytical Inc. A Division of Emerson Process Management Operation 3-5
Model MicroCEM
ALARM NAME
LEVEL
DESCRIPTION
O2 Calibration Failed
Critical
O2 Calibration Failed to meet the maximum Drift requirements
CO Calibration Failed
Critical
CO Calibration Failed to meet the maximum Drift requirements
NOx Calibration Failed
Critical
NOx Calibration Failed to meet the maximum Drift require-
ments
O2 High Limit
Critical
O2 Sensor reading is above the minimal acceptable limit
O2 Low Limit
Critical
O2 Sensor reading is below the minimal acceptable limit
CO High Limit
Critical
CO Sensor reading is above the minimal acceptable limit
CO Low Limit
Critical
CO Sensor reading is below the minimal acceptable limit
NOx High Limit
Critical
NOx Sensor reading is above the minimal acceptable limit
NOx Low Limit
Critical
NOx Sensor reading is below the minimal acceptable limit
24V Over Max
Critical
24V diagnostic input exceeds the specified maximum
24 Low Min
Critical
24V diagnostic input is below the specified minimum
O2 Emission Limit
Warning
O2 reading is over the specified Limit
CO Emission Limit
Warning
CO reading is over the specified Limit
NOx Emission Limit
Warning
NOx reading is over the specified Limit
Converter Over Temp
Critical
Converter temperature reading exceeds the specified maxi-
mum
Converter Low Temp
Critical
Converter temperature reading is below the specified minimum
Zone Over Temp
Critical
Zone temperature reading exceeds the specified maximum
Zone Low Temp
Critical
Zone temperature reading is below the specified minimum
PDT Over Temp
Critical
Peltier Cooler (PDT) temperature reading exceeds the speci-
fied maximum
PDT Low Temp
Critical
Peltier Cooler (PDT) temperature reading is below the specified
minimum
PMT Over Temp
Critical
PDD Chamber temperature reading exceeds the specified
maximum
PMT Low Temp
Critical
PDD Chamber temperature reading is below the specified
minimum
Warm-up Time Limit
Critical
System Warm-up process exceeded the specified time limit
Table 3-2.
Alarm Summary