Emerson Process Management 3-9000-522 Manual Do Utilizador
C-18
DATA COMPUTATIONS
MON2000
Indirect Calibration
JULY 2010
The mole% value in the sample gas is then
calculated as
where
C.4.4 Indirect Calibration
Component gases which are NOT found in the
calibration gas, but may be found in the sample
gas, can be assigned a response factor which is
a fixed multiple (the Relative Response Factor
to 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 (following the
Multi-Level Calibration coefficients)
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:
Equation C-23 Mole% Value
P
peak size measured in Sample Gas
Mole % =
aP
3
bP
2
cP
d
+
+
+
responsefactor
-----------------------------------------------
Equation C-24 Mole% Value Indirect Component
mole% (neoC5) = mole% (Propane)
P neoC5
(
)
P Propane
(
)
-------------------------------
⎝
⎠
⎛
⎞
RRFneoC5
(
)