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Teledyne API Model T360/T360M Operation Manual Operating Instructions
77
PROPERTY DESCRIPTION DEFAULT SETTING RANGE
CAL HOLD
OFF
Disables sampling of data parameters while instrument is
in calibration mode.
When enabled here – there is also a length of the DAS
HOLD OFF after calibration mode, which is set in the
VARS menu.
OFF
OFF or ON
(Section 4.7.2.13)
4.7.1.2. DAS PARAMETERS
Data parameters are types of data that may be measured and stored by the DAS.
For each Teledyne Instruments analyzer model, the list of available data
parameters is different, fully defined and not customizable. Appendix A-5 lists
firmware specific data parameters for the analyzer. DAS parameters include
things like CO
2
concentration measurements, temperatures of the various heaters
placed around the analyzer, pressures and flows of the pneumatic subsystem and
other diagnostic measurements as well as calibration data such as slope and
offset.
Most data parameters have associated measurement units, such as mV, ppb,
cm³/min, etc., although some parameters have no units. With the exception of
concentration readings, none of these units of measure can be changed. To
change the units of measure for concentration readings see Section 4.8.6.
Note
DAS does not keep track of the unit of each concentration value, and DAS data files may contain
concentrations in multiple units if the unit was changed during data acquisition.
Each data parameter has user-configurable functions that define how the data are
recorded:
Table 4-8: DAS Data Parameter Functions
FUNCTION EFFECT
PARAMETER
Instrument-specific parameter name.
SAMPLE MODE
INST: Records instantaneous reading.
AVG: Records average reading during reporting interval.
MIN: Records minimum (instantaneous) reading during reporting interval.
MAX: Records maximum (instantaneous) reading during reporting interval.
SDEV: Records the standard deviation of the data points recorded during the reporting interval.
PRECISION
Decimal precision of parameter value (0-4).
STORE NUM.
SAMPLES
OFF: stores only the average (default).
ON: stores the average and the number of samples in each average for a parameter. This
property is only useful when the AVG sample mode is used. Note that the number of samples
is the same for all parameters in one channel and needs to be specified only for one of the
parameters in that channel.
Users can specify up to 50 parameters per data channel (the T360 provides about
30 parameters). However, the number of parameters and channels is ultimately
limited by available memory.
07272B DCN6552