Teledyne 300 2.0OPERATION, 2.1Key features, CO readout, CO analog output, Adaptive filter

2.0OPERATION

2.1Key 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 E2 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 (E2) 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