SICK EuroFID, Operating Instructions Manual

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106 EuroFID · Operating Instructions · 8011094 V2.3 · © SICK AG
“Maintenance” Sub-menu Functions
Conversion of the volumetric concentration to another gas component
Formula:
Example:
Response factors
M
R
=
M
E
·
N
E
Rf N
R
Parameter Significance
M
R
Actual volumetric concentration in the sample gas
M
E
Measurement displayed by the EuroFID in [ppm]
N
E
Number of carbon atoms in the molecules of the span gas with which the
EuroFID was calibrated (e.g. propane)
N
R
Number of carbon atoms in the molecules of the gas component which is
actually contained in the sample gas (measuring component)
Rf Response factor of the measuring component ( → P. 106, Table 10 )
Measuring component: Acetone (C
3
H
6
O)
Employed span gas: Propane (C
3
H
8
)
Displayed measured value: 3 6 1 p p m (based on propane)
Response factor for acetone: 0.71
M
R
=
361 ppm
·
3
= 508 ppm acetone
0.71 3
Table 10 Tested response factors for the EuroFID, based on propane
Measuring component Rf
Acetone 0.70
Acetylene 0.94
Benzole 0.97
n-Butane 0.97
n-Heptane 0.96
Chlorobenzene 0.98
Cyclohexane 0.95
Dichloromethane 1.06
Ethyl acetate
0.69
Isobutyl acetate 0.80
Ethyl benzene 0.93
Methane 1.04
Propane 1.00
Isopropanol 0.73
Tetrachlorethene 1.11
Toluol 0.96
p-Xylene 0.93
Control gas 1 to EN 12619 1.02
Control gas 2 to EN 12619 1.04