Teledyne GFC-7001T - Trace CO Analyzer - Manual (Page 104)

SetupTeledyne API – Model T300/T300M CO Analyzer
Teledyne Analytical Instruments 104
5.4.5. DILUTION RATIO (OPTION)
This feature is a optional software utility that allows the user to compensate for any
dilution of the sample gas that may occur before it enters the sample inlet. Typically this
occurs in continuous emission monitoring (CEM) applications where the sampling
method used to remove the gas from the stack dilutes it.
Using the dilution ratio option is a 4-step process:
1. Select the appropriate units of measure (see Section 5.4.4).
2. Select the reporting range mode and set the reporting range upper limit (see Section
5.4.3).
 Ensure that the upper span limit entered for the reporting range is the
maximum expected concentration of the UNDILUTED gas.
3. Set the dilution factor as a gain (e.g., a value of 20 means 20 parts diluent and 1 part
of sample gas):
4. Calibrate the analyzer.
 Make sure that the calibration span gas is either supplied through the same dilution
system as the sample gas or has an appropriately lower actual concentration.