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2.0 OPERATION
2.1 Key features
The important features of the Teledyne API Model 300 CO Analyzer are listed below.
2.1.1 CO readout
The Teledyne API Model 300 CO Analyzer constantly displays the current Carbon
Monoxide reading (in PPM) in the upper right hand corner of the alphanumeric display.
2.1.2 CO analog output
The Teledyne API CO Analyzer provides a buffered analog output of the current CO
readings on each of two pairs of outputs on the rear panel (see Figure 1.2) for DAS and
recorder reporting. The analog outputs provide for 20% overrange. For example, on the
50 ppm range the M300 will correctly report concentrations up to 60 ppm and output up
to 6.00 volts to the DAS and recorder outputs.
In addition TEST function values can be routed to a third analog output.
2.1.3 E
2
ROM backup of software configuration
The Teledyne API CO Analyzer has a few jumpers that need to be set by the operator.
Configuration of the Analyzer is done under software control and the configuration
options are stored in electrically erasable (E
2
) ROM. Thus, configuration options are
saved even when the Analyzer is powered off.
There is one exception to this. The analog output voltage ranges are set by jumpers on
the A/D-I/O board as shown in Section 10.6.3.
2.1.4 Adaptive filter
The Teledyne API CO Analyzer is able to provide a smooth, stable output by means of an
adaptive filter. During conditions of constant or nearly constant concentration the filter is
allowed to grow to 600 samples (2 minutes) in length, providing a smooth, stable
reading. If a rapid change in concentration is detected, the filter is cut to 50 samples to
allow the Analyzer to quickly respond to rapidly varying signals.
2.1.5 Data acquisition
The Teledyne API CO Analyzer contains a built-in data acquisition system which keeps
track of the average CO readings and the last 100 averages. This data is made available
to other systems via the RS-232 interface. The Analyzer can be programmed to
automatically output a 1 minute to 60 minute average. The last 100 averages can be
called up through the remote RS-232 I/O or viewed on the display through keyboard
call-up.
P/N 02163G1 Teledyne API Model 300 CO Analyzer Instruction Manual - Page 23