Operation - Teledyne T300 Operation Manual

Teledyne API – Model T300/T300M CO Analyzer
06864B DCN6314
IR unaffected by N in Measurement Cell of
2
the GDC Wheel and no additional CO in the
Sample Chamber
IR affected by CO in Reference Cell
with no interfering gas in the
Sample Chamber
IR shinning through Measurement Cell of
the GDC Wheel is reduced by additional CO
in the Sample Chamber
IR shining through Reference Cell is
also reduced by additional CO in the
Sample Chamber, but to a lesser extent
Figure 13-4:
Once the T300/T300M has computed this ratio, a look-up table is used, with
interpolation, to linearize the response of the instrument. This linearized concentration
value is combined with calibration SLOPE and OFFSET values to produce the CO
concentration which is then normalized for changes in sample pressure.
Affect of CO in the Sample on CO MEAS & CO REF
Theory of Operation
CO MEAS
CO REF
M/R
is reduced
301