Section II Operating Instructions Teledyne API T802 Paramagnetic O2 Analyzer Operation Manual
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Table 7-2: DAS Data Channel Properties
PROPERTY DESCRIPTION
DEFAULT
SETTING SETTING RANGE
NAME The name of the data channel. “NONE” Up to 6 letters or digits 1
TRIGGERING
EVENT
The event that triggers the data channel to measure
and store the datum ATIMER Any available event
(see Appendix A-5).
NUMBER AND
LIST OF
PARAMETERS
A User-configurable list of data types to be
recorded in any given channel.
1
(PMTDET)
Any available parameter
(see Appendix A-5).
REPORT PERIOD The amount of time between each channel data
point.
000:01:00
(1 hour)
000:00:01 to
366:23:59
(Days:Hours:Minutes)
NUMBER OF
RECORDS
The number of reports that will be stored in the data
file. Once the limit is exceeded, the oldest data is
over-written.
100
1 to 30,000 (max), limited
by available storage
space. 2
RS-232 REPORT Enables the analyzer to automatically report
channel values to the RS-232 ports. OFF OFF or ON
CHANNEL
ENABLED
Enables or disables the channel. Allows a channel
to be temporarily turned off without deleting it. ON OFF or ON
CAL HOLD OFF Disables sam pling of data parameters while
instrument is in calibration mode. 3 OFF OFF or ON
1 More with APICOM, but only the first six are displayed on the front panel).
2 For information regarding the maximum number of channels, parameters, and records and how to calculate the file size for each data
channel, refer to the DAS manual downloadable from the TAPI website at http://www.teledyne-api.com/manuals/ under Special
Manuals.
3 When enabled records are not recorded until the DAS HOLDOFF period is passed after calibration mode. DAS HOLDOFF SET in the
VARS menu (see Section 5.8.)
7.1.2. DEFAULT DAS CHANNELS

CONC: Samples O2 concentration 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. By default, 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: Data channel logs new slope and offset of O2 measurements each

time a zero or span calibration is performed and the result changes the value of

the slope (triggering event: SLPCHG). The O2 stability (to evaluate if the

calibration value was stable) as well as the converter efficiency (for trend

reference) are also stored.

This data channel will store data from the last 200 calibrations and can be
used to document analyzer calibration; it also is useful for detecting trends in
slope and offset (instrument response) when performing predictive
diagnostics as part of a regular maintenance schedule.
07275B DCN6418