Specifications

STARTUP and OPERATION
R12O2SpanDriftLimit O2 Allowed Span Drift
Limit for Range 2.
R2COSpanDriftLimit CO Allowed Span Drift
Limit for Range 2.
R2NOXSpanDriftLimit NOx Allowed Span Drift
Limit for Range 2.
4.6 uCEM Data Logs
The µCEM maintains a minimum of 3 months of history in three types of data log files.
The first type of log file is the measurement log, which contains emission measurements
(at 1 minute intervals), alarm indications and maintenance mode indications. The
second type of log file is the calibration log file, which contains information on each auto
calibration done. The third is the alarm log file, which records any improperly functioning
hardware. The data will be stored in flat, ASCII, CSV (comma-delineated) files. This file
format can be read directly by MS Excel and imported into many types of software
applications. The following parameters are factory set for each of the log file types.
4.6.1 Maximum Log File Size
This is how large a log file can get (in bytes) before it is closed and a new log file is
opened.
Emissions Log: 1 MB
Calib Log: 4000 bytes
Alarm Log: 4000 bytes
4.6.2 Maximum Number of Log Files
This is how many log files can be created. When the maximum number of log files is
reached, the oldest file is overwritten when new ones are created.
Emissions Log: 6
Calib Log: 6
Alarm Log: 6
4.6.3 Log File Name Format
The log file name uses the date that the file was created. It is of the format
TYYYYMMDD.CSV where T is the log file type (E=Emissions, C=Calibration and
A=Alarm), YYYY is the Year, MM is the month, and DD is the day of the month. For
example, the file name E20010329.csv contains emissions data and was created on
March 29, 2001.
Rosemount Analytical µCEM Continuous Analyzer Transmitter 4-7