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Instruction Manual
748467-A
January 2002
Rosemount Analytical Inc. A Division of Emerson Process Management Operation 3-13
Model MicroCEM
Calibration Setting Description
O2ZeroDriftLimit O2 Allowed Zero Drift Limit.
COZeroDriftLimit CO Allowed Zero Drift Limit.
NOXZeroDriftLimit NOx Allowed Zero Drift Limit.
OSMidDriftLimit O2 Allowed Mid Drift Limit.
COMidDriftLimit CO Allowed Mid Drift Limit.
NOXMidDriftLimit NOx Allowed Mid Drift Limit.
O2SpanDriftLimit O2 Allowed Span Drift Limit.
COSpanDriftLimit CO Allowed Span Drift Limit.
NOXSpanDriftLimit NOx Allowed Span Drift Limit.
If the drift exceeds the allowed amount a drift alarm
will occur, and the readings on the channel will no
longer be valid until a successful calibration is com-
pleted.
O2Slope Default value for the O2 slope
O2Offset Default value for the O2 offset
COSlope Default value for the CO slope
COOffset Default value for the CO offset
NOXSlope Default value for the NOx slope
NOXOffset Default value for the NOx offset
Initial values for the emissions conversion slope and
offset used on a new system before the first Cali-
bration is performed. These values should be set
manually before the first auto-calibration is per-
formed.
O2SpanDef Default O2 Span Calibration Gas value
O2MidSpanDef Default O2 Mid Span Calibration Gas value
COSpanDef Default CO Span Calibration Gas value
COMidSpanDef Default CO Mid Span Calibration Gas value
NOXSpanDef Default NOx Span Calibration Gas value
NOXMidSpanDef Default NOx Mid Span Calibration Gas value
Gas1Allocation Default Gas 1 allocation
Gas2Allocation Default Gas 2 allocation
Gas3Allocation Default Gas 3 allocation
Default allocation for O2/NOx/CO. 1 = Zero, 2 = Mid
Span, 3 = Span. Example: 133 =
O2=Zero,NOx=Span,CO=Span
AutoCalFrequency Default Auto-Calibration frequency in hours and minutes (example: 24:00).
AutoCalTime Default Auto-Calibration time in hours and minutes (military time).
Purge1 Default auto-calibration Purge 1 value in seconds.
Gas1 Default auto-calibration gas 1 time in seconds.
Gas2 Default auto-calibration gas 2 time in seconds.
Gas3 Default auto-calibration gas 3 time in seconds.
Purge2 Default auto-calibration Purge 2 value in seconds.
Table 3-3. Factory Settings – Calibration