Environnement
S.A
MIR 9000
Duplication prohibited
3–36
JULY 2009
This menu enables programming the linearization curves for each gas measured by infrared. These
curves can be composed of 9 segments separated by 8 limits or inflection points. The segments are
programmed in the form of second degree polynomials.
CONC = A
n
*
(Abs.)
2
+ B
n
*
Abs. + C
n
−
CONC: concentration in the unit chosen,
−
n: number of the segment (from 1 to 9),
−
Abs.: absorption measured.
Linearization curve - MIR 9000
0
20
40
60
80
100
120
140
160
180
200
0
2
4
6
8
10
12
14
16
18
20
% Absorption
C
o
n
cen
tr
at
io
n
Seg. 2
Seg. 5
Seg. 4
Seg. 3
Seg. 1
Pt. 1
Pt. 2
Pt. 3
Pt. 4
Pt. 5
Figure 3–4
–
Example of a linearization curve from five polynomials
3.3.4.9.4 Interferant
correction
Reserved for maintenance of the analyzer.
CAUTION: Modification of the parameters contained in this screen could cause
breakdowns in the analyzer or wrong measurements.
It permits correcting the concentration or absorption measured according to the interference of
another measurement channel or analog input parameter.
The number of corrections per gas is defined in the “
Channels setting
” menu. The number of
corrections per gas is limited to 4.
STOP
Summary of Contents for Envea MIR 9000
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