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Data Acquisition System (DAS) and APICOM Teledyne API - T100 UV Fluorescence SO2 Analyzer
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Table 7-1: Front Panel LED Status Indicators for DAS
LED STATE DAS STATUS
Off
System is in calibration mode. Data logging can be enabled or disabled for this mode.
Calibration data are typically stored at the end of calibration periods, concentration data are
typically not sampled, diagnostic data should be collected.
Blinking
Instrument is in hold-off mode, a short period after the system exits calibrations. DAS
channels can be enabled or disabled for this period. Concentration data are typically disabled
whereas diagnostic should be collected.
On Sampling normally.
Note The DAS can be disabled only by disabling or deleting its individual data
channels.
7.1. DAS STRUCTURE
The DAS is designed around the feature of a “record”. A record is a single data point of
one parameter, stored in one (or more) data channels and generated by one of several
triggering event. The entire DAS configuration is stored in a script, which can be edited
from the front panel or downloaded, edited and uploaded to the instrument in form of a
string of plain-text lines through the communication ports.
DAS data are defined by the PARAMETER type and are stored through different
triggering EVENTS in data CHANNELS, which relate triggering events to data
parameters and define certain operational functions related to the recording and
reporting of the data.
7.1.1. DAS CHANNELS
The key to the flexibility of the DAS is its ability to store a large number of
combinations of triggering events and data parameters in the form of data channels.
Users may create up to 20 data channels and each channel can contain one or more
parameters. For each channel one triggering event is selected and up to 50 data
parameters, which can be the same or different between channels. Each data channel has
several properties that define the structure of the channel and allow the user to make
operational decisions regarding the channel (refer to Table 7-2).
06807C DCN6650