User Manual

MON20/20 Software for Gas Chromatographs

3-9000-745

OCTOBER 2010

 

 

where

 

P

Peak size measured in sample gas.

Coefficients:

Calculated offline and entered after multi-level calibration using

a,b,c, and d

several--typically seven--calibration gases.

 

NOTE: If the coefficient values are correct, the response factor will be

 

close to 1.

B.4.4 Indirect calibration

Component gases that are not found in the calibration gas, but may be found in the sample gas, can be assigned a relative response factor that is a fixed multiple of a reference component that is found in the calibration gas.

The Relative Response Factors and Reference Component Values are included in the Component Data Table. See Appendix A for more information.

If the Reference Component is None, then normal (direct) calibration is used.

If the Reference Component is defined, (e.g. Propane) then the mole% value for the indirect component (e.g. neoC5), is calculated as:

mole% (neoC5) = mole% (Propane)

⎛

P(neoC5) ⎞

(RRFneoC5)

⎝

-------------------------------⎠

 

 

P(Propane)

 

where

PPeak size

RRF Relative Response Factor

B-14

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Emerson Process Management 3-9000-745 manual Indirect calibration
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3-9000-745 specifications

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