Teledyne GFC7001T User Manual download pdf (Page 165)

DAC and APICONTeledyne API – Model T300/T300M CO Analyzer

Teledyne Analytical Instruments 165

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

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.

(COMEAS)

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 1 million, limited by

available storage space.

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.

OFF or ON

CAL HOLD OFF

Disables sampling of data parameters while

instrument is in calibration mode

OFF

OFF or ON

More with APICOM, but only the first six are displayed on the front panel.

When enabled records are not recorded until the DAS HOLD OFF period is passed after calibration mode. DAS HOLD OFF SET in

the VARS menu (see Section 7.1.11

7.1.2. DEFAULT DAS CHANNELS

A set of default Data Channels has been included in the analyzer’s software for logging

CO concentration and certain predictive diagnostic data. These default channels include

but are not limited to:

CONC: Samples CO 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 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 of CO measurements every time a zero or

span calibration is performed and the result changes the value of the slope

(triggering event: SLPCHG). The CO stability data to evaluate if the

calibration value was stable are also stored.

 This data channel will store data from the last 200 calibrations and can be used to

document analyzer calibration and is useful in the detection of the in slope and

offset (instrument response) when performing predictive diagnostics as part of a

regular maintenance schedule.

 The CALDAT channel collects data based on events (e.g. a calibration operation)

rather than a timed interval and therefore does not represent any specific length of

time. As with all data channels, a date and time stamp is recorded for every logged

data point.

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Teledyne GFC7001T User Manual Page 165

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Teledyne GFC7001T User Manual Page 165

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