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1 Introduction Model 7300A
Teledyne Analytical Instruments
1.3 Main Features of the Analyzer
The Model 7300A Infrared Gas Analyzer is sophisticated yet simple to
use. The main features of the analyzer include:
• A easy-to-use front panel interface that includes a red 5-digit
LED display and a vacuum fluorescent display, driven by
microprocessor electronics, that continuously prompts and
informs the operator.
• High resolution, accurate readings of concentration from low
levels to 100%. Large, bright, meter readout.
• Versatile analysis over a wide range of applications.
• Microprocessor based electronics: 8-bit CMOS microprocessor
with 32 kB RAM and 128 kB ROM.
• Three user definable output ranges (from 0-2% through 0-100 %)
allow best match to users process and equipment.
• Calibration range for convenient zeroing or spanning.
• Auto Ranging allows analyzer to automatically select the proper
preset range for a given measurement. Manual override allows
the user to lock onto a specific range of interest.
• Two adjustable concentration alarms and a system failure alarm.
• Extensive self-diagnostic testing, at startup and on demand, with
continuous power-supply monitoring.
• RS-232 serial digital port for use with a computer or other digital
communication device.
• Analog outputs for concentration and range identification.
(0-1 V dc standard, and isolated 4–20 mA dc)
• Superior accuracy.
1.4 General
The Model 7300A is a non-dispersive infrared (NDIR) analyzer that
employs the basic principles of spectroscopic analysis to measure a specific
concentration of a gas in a multicomponent gas system. The concentration of
component of interest is determined by exposing a chamber (sample cell)
filled with a gas mixture to infrared radiant energy and measuring how much
of the specific (non-dispersive) infrared wavelength is absorbed by the gas