Configuring The Idas; Default M200E Idas Configuration - Teledyne 200E Instruction Manual

Model 200E Instruction Manual Operating Instructions

6.10.2. Configuring the iDAS

6.10.2.1. Default M200E iDAS Configuration

A set of default data channels has been included in the analyzer's software for logging
nitrogen oxides concentrations, calibration and predictive diagnostic data. These default
channels are listed in Table 6-22 and are defined as follows:
CONC: Hourly averages of NO , NO and NO concentrations and the NO stability (standard
X 2 X
deviation). These data are recorded at one minute intervals and stored every full hour with
a time and date stamp. Readings during calibration and the calibration hold off period are
not included in the averages. By default, the last 800 hourly averages are stored, which
covers more than one month of continuous data acquisition. This channel also logs the
number of (1-minute) samples within each average for statistical evaluation of the
concentration means.
CALDAT: Logs concentration, slope and offset values for NO and NO every time a zero or
X
span calibration is performed (triggering event: SLPCHG). The NO stability (to evaluate if
X
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 and detect trends in slope and offset (instrument
response). As with all data channels, a date and time stamp is recorded for every logged
data point.
CALCHECK: This channel logs concentrations and the stability each time a zero or span
check (not calibration) is finished (triggered by exiting any calibration menu). The data of
this channel enable 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 specifica-
tions. The STABIL figure documents if the analyzer response was stable at the point of the
calibration check reading. 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 intended for predictive diagnostics
and maintenance described in Chapter 9. The last 1100 daily averages are stored to cover
more than four years of analyzer performance, a major portion of the analyzer's lifetime. If
these parameters are required for data analysis, this channel can easily be duplicated (e.g.,
by using APICOM) to obtain hourly averages, which could be synchronized with the CONC
data.
HIRES: One minute, instantaneous data of all available parameters in the M200E that are
actively used. This data channel is disabled by default but may be turned on for trouble-
shooting or when the application requires a high resolution of data. Short-term trends as
well as signal noise levels can be detected and documented this way. Readings during
calibration and the calibration hold off period are included in the averages. By default, the
last 1500 data points are stored, which covers a little more than one day of continuous data
acquisition.
Please be aware that all stored data will be erased if the analyzer's disk-on-chip, CPU board
or configuration is replaced/reset.
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