Teledyne GFC-7001T - Trace CO Analyzer - Manual (Page 23)

IntroductionTeledyne API – Model T300/T300M CO Analyzer
Teledyne Analytical Instruments
1. INTRODUCTION, FEATURES AND OPTIONS
This section provides an overview of the Model GFC7001T or GFC7001TM Analyzer,
its features and its options, followed by a description of how this user manual is
arranged.
1.1. GFC7001T FAMILY OVERVIEW
The family includes the GFC7001T and the GFC7001TM Gas Filter Correlation Carbon
Monoxide Analyzer. The GFC7001T family of analyzers is a microprocessor-controlled
analyzer that determines the concentration of carbon monoxide (CO) in a sample gas
drawn through the instrument. It uses a method based on the Beer-Lambert law, an
empirical relationship that relates the absorption of light to the properties of the material
through which the light is traveling over a defined distance. In this case the light is
infrared radiation (IR) traveling through a sample chamber filled with gas bearing a
varying concentration of CO.
The GFC7001T/GFC7001TM uses Gas Filter Correlation (GFC) to overcome the
interfering effects of various other gases (such as water vapor) that also absorb IR. The
analyzer passes the IR beam through a spinning wheel made up of two separate
chambers: one containing a high concentration of CO known as the reference, and the
other containing a neutral gas known as the measure. The concentration of CO in the
sample chamber is computed by taking the ratio of the instantaneous measure and
reference values and then compensating the ratio for sample temperature and pressure.
The GFC7001T/GFC7001TM Analyzer’s multi-tasking software gives the ability to
track and report a large number of operational parameters in real time. These readings
are compared to diagnostic limits kept in the analyzers memory and should any fall
outside of those limits the analyzer issues automatic warnings.
Built-in data acquisition capability, using the analyzer's internal memory, allows the
logging of multiple parameters including averaged or instantaneous concentration
values, calibration data, and operating parameters such as pressure and flow rate. Stored
data are easily retrieved through the serial port or Ethernet port via our APICOM
software or from the front panel, allowing operators to perform predictive diagnostics
and enhanced data analysis by tracking parameter trends. Multiple averaging periods of
one minute to 365 days are available for over a period of one year.