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Operating Instructions Teledyne API - Model 200EH/EM Operation Manual
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6.7.2. DEFAULT IDAS CHANNELS
The M200EH/EM is configured with a basic iDAS configuration, which is enabled by default. New data channels
are also enabled by default but each channel may be turned off for later or occasional use. Note that iDAS
operation is suspended while its configuration is edited through the front panel. To prevent such data loss, it is
recommended to use the APICOM graphical user interface for iDAS changes.
A set of default data channels has been included in the analyzer’s software for logging nitrogen oxides
concentrations, calibration and predictive diagnostic data. They are:
CONC: Samples NO
X
, NO and NO
2
concentration at one minute intervals and stores an average every
hour with a time and date stamp along with the number of (1-minute) samples within each average(for
statistical evaluation). Readings during calibration and calibration hold off are not included in the data.
By default, the last 800 hourly averages are stored.
CALDAT: Every time a zero or span calibration is performed CALDAT logs concentration, slope and
offset values for NO
X
and NO with a time and date stamp. The NO
X
stability (to evaluate calibration
stability) as well as the converter efficiency (for reference) are also stored. This data channel will store
data from the last 200 calibrations and can be used to document analyzer calibration. The slope and
offset data can be used to detect trends in (instrument response.
CALCHECK: This channel logs concentrations and the stability each time a zero or span check (not
calibration) is finished. This allows the user to track the quality of zero and span responses over time
and assist in evaluating the quality of zero and span gases and the analyzer’s noise specifications. The
last 200 data points are retained.
DIAG: Daily averages of temperature zones, flow and pressure data as well as some other diagnostic
parameters (HVPS, AZERO). These data are useful for predictive diagnostics and maintenance of the
M200EH/EM. The last 1100 daily averages are stored to cover more than four years of analyzer
performance.
HIRES: Records one minute, instantaneous data of all active parameters in the M200EH/EM. Short-
term trends as well as signal noise levels can be detected and documented. Readings during calibration
and the calibration hold off period are included in the averages. The last 1500 data points are stored,
which covers a little more than one day of continuous data acquisition. This data channel is disabled by
default but may be turned on when needed such as for trouble-shooting problems with the analyzer.
The default data channels can be used as they are, or they can be customized from the front panel or through
APICOM to fit a specific application. The Teledyne Instruments website contains this default and other sample
iDAS scripts for free download. We recommend that the user backs up any iDAS configuration and its data
before altering it.
NOTE
Teledyne-API recommends downloading and storing existing data and the iDAS
configurations regularly for permanent documentation and future data analysis.
Sending an iDAS configuration to the analyzer through its COM ports will replace the
existing configuration and will delete all stored data.
04521C (DCN5731)