Teledyne 360E 6.7.2. Default iDAS Channels

Operating Instructions Model 360E Instruction Manual

Triggering events define when and how the iDAS records a measurement of any given data channel. Triggering

events are firmware-specific and a complete list of Triggers for this model analyzer can be found in Appendix A-

5. The most commonly used triggering events are:

 ATIMER: Sampling at regular intervals specified by an automatic timer. Most trending

information is usually stored at such regular intervals, which can be instantaneous or averaged.

 EXITZR, EXITSP, SLPCHG (exit zero, exit span, slope change): Sampling at the end of

(irregularly occurring) calibrations or when the response slope changes. These triggering

events create instantaneous data points, e.g., for the new slope and offset (concentration

response) values at the end of a calibration. Zero and slope values are valuable to monitor

response drift and to document when the instrument was calibrated.

 WARNINGS: Some data may be useful when stored if one of several warning messages

appears such as WTEMPW (GFC wheel temperature warning) or PPRESW (purge pressure

warning). This is helpful for trouble-shooting by monitoring when a particular warning occurred.

6.7.2. Default iDAS Channels

A set of default Data Channels has been included in the analyzer’s software for logging CO2 concentration and

certain predictive diagnostic data. These default channels include but are not limited to:

CONC: Samples CO2 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: Logs new slope and offset every time a zero or span calibration is performed. This Data Channel also

records the instrument readings just prior to performing a calibration. This information is useful for performing

predictive diagnostics as part of a regular maintenance schedule (See Section 9.1).

STBZRO: Logs the concentration stability, the electronic output of the IR detector of the most recent measure

phase and the measure/reference ratio every time the instrument exits the zero calibration mode. Data from the

last 200 zero calibrations is stored. A time and date stamp is recorded for every data point logged. This

information is useful for performing predictive diagnostics as part of a regular maintenance schedule (See

Section 9.1).

STBSPN: Logs the electronic output of the IR detector of the most recent measure phase and the

measure/reference ratio every time the instrument exits span calibration mode. Data from the last 200 zero

calibrations is stored. A time and date stamp is recorded for every data point logged. This information is useful

for performing predictive diagnostics as part of a regular maintenance schedule (See Section 9.1).

TEMP: Samples the analyzer’s bench temperature, box temperature and PHT cooler drive voltage every five

minutes and records an average once every six hours. Data from the last 400 averaging periods is recorded. A

time and date stamp is recorded for every data point logged. This information is useful for performing predictive

diagnostics as part of a regular maintenance schedule (See Section 9.1).

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