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4.11.1 Data Channels
The function of the Data Channels is to store, report, and view data from the analyzer.
The data may consist of carbon monoxide concentration, or may be diagnostic data, such
as the sample flow or detector output.
The M300 comes pre-programmed with a set of useful Data Channels for logging carbon
monoxide concentration and predictive diagnostic data. The default Data Channels can
be used as they are, or they can be changed by the user to fit a specific application. They
can also be deleted to make room for custom user-programmed Data Channels.
The data in the default Data Channels can be viewed through the SETUP-DAS-VIEW
menu. Use the PREV and NEXT buttons to scroll through the Data Channels and press
VIEW to view the data. The last record in the Data Channel is shown. Pressing PREV
and NEXT will scroll through the records one at a time. Pressing NX10 and PV10 will
move forward or backward 10 records. For Data Channels that log more than one
parameter, such as PNUMTC, buttons labeled <PRM and PRM> will appear. These
buttons are used to scroll through the parameters located in each record.
The function of each of the default Data Channels is described below:
CONC: Samples carbon monoxide concentration (Low Range) at one minute
intervals and stores an average every hour with a time and date
stamp. Readings during calibration and calibration hold off are not
included in the data. The last 800 hourly averages are stored.
PNUMTC: Collects sample flow and sample pressure data at five minute
intervals and stores an average once a day with a time and date
stamp. This data is useful for monitoring the condition of the pump
and critical flow orifice(sample flow) and the sample filter(clogging
indicated by a drop in sample pressure) over time to predict when
maintenance will be required. The last 360 daily averages (about 1
year) are stored.
CALDAT: Logs new slope and offset every time a zero or span calibration is
performed. This Data Channel also records the instrument reading
just prior to performing a calibration. Note: this Data Channel
collects data based on an event(a calibration) rather than a timer.
This Data Channel will store data from the last 200 calibrations.
This does not represent any specific length of time since it is
dependent on how often calibrations are performed. As with all Data
Channels, a time and date stamp is recorded for every data point
logged.
P/N 02163G1 Teledyne API Model 300 CO Analyzer Instruction Manual - Page 43