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Instruction Manual
748467-A
January 2002
Rosemount Analytical Inc. A Division of Emerson Process Management Operation 3-19
Model MicroCEM
e. Calibration Log File Format
The log file contains data in a flat, AS-
CII, CSV file. The following are the
fields of the file, in order of occurrence.
The log file size will be about 178 bytes
per entry. 3 months of data logs will
require about 16000 bytes (based on
Calibration performed every 24 hours).
Name Description Example
Date/Time Month-day-year Hours:Minutes:Seconds 3-7-2001 10:24:57
Zero Time Time that Zero span started, Hours:Minutes:Seconds 10:25:30
Mid Time Time That Mid span started, Hours:Minutes:Seconds 10:27:30
Span Time Time that span started, Hours:Minutes:Seconds 10:28:30
Purge Time Time that the final purge started,
Hours:Minutes:Seconds
10:30:30
Finish Time Time that the final purge finishes 10:31:00
O2 Measured Zero Measured percent O2 for Zero phase of calibration 0.0
O2 Expected Zero Expected percent O2 for Zero phase of calibration 0.0
O2 Zero Drift Percent drift of O2 zero calibration 0.0
O2 Measured Mid Span Measured percent O2 for Mid span phase of calibration 10.1
O2 Expected Mid Span Expected percent O2 for Mid span phase of calibration 10.0
O2 Mid Drift Percent drift of O2 mid calibration. -0.4
O2 Measured Span Measured percent O2 for Span phase of calibration 20.2
O2 Expected Span Expected percent O2 for Span phase of calibration 20.3
O2 Span Drift Percent drift of O2 span calibration 0.4
CO Measured Zero 1
CO Expected Zero 0
CO Zero Drift 0.3
CO Measured Mid Span 23
CO Expected Mid Span 24
CO Mid Span Drift -0.3
CO Measured Span 45
CO Expected Span 45
CO Span Drift 0
NOx Measured Zero Measured ppm NOx for zero phase of calibration 15
NOx Expected Zero Expected ppm NOx for zero phase of calibration 15
NOx Zero Drift 0
NOx Measured Mid Span Measured ppm NOx for mid span phase of calibration 30
NOx Expected Mid Span Measured ppm NOx for mid span phase of calibration 30
NOx Mid Span Drift 0
NOx Measured span Measured ppm NOx for span phase of calibration 59
NOx Expected span Measured ppm NOx for span phase of calibration 59
NOx Span Drift 0
Table 3-8. Calibration Log File Format