14 Introduction, Specifications, Approvals, & Compliance 083730300A DCN8101
1. INTRODUCTION, SPECIFICATIONS, APPROVALS, &
COMPLIANCE
Teledyne API’s Model T300 and Model T300M are Gas Filter Correlation Carbon
Monoxide Analyzers. These microprocessor-controlled analyzers are used to determine
the concentration of carbon monoxide (CO) in a sample gas drawn through the
instrument. The analysis method is 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 T300/T300M 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.
Proprietary software allows configurable data acquisition capability that can be triggered
conditionally or periodically, enabling operators to perform predictive diagnostics and
enhanced data analysis by tracking parameter trends. Reports can be downloaded onto a
USB flash drive or via the I/O ports. Operators can also view real-time graphing with one
touch of the interface screen.
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