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MultiExact Gas Analyser Appendix
A11 CROSS INTERFERENCE OFFSETS (FOR PARAMAGNETIC
TRANSDUCERS)
Pure Gas
Formula
Molar
mag.susc
x 10
-6
Cross interference offsets
Control = 20 °C
Purity = 60 °C
20 °C
50 °C
60 °C
110 °C
Acetaldehyde
CH
2
CHO
–22.70
–0.31
–0.34
–0.35
–0.40
Acetic acid
CH
3
CO
2
H
–31.50
–0.56
–0.62
–0.64
–0.74
Acetone
CH
3
COCH
3
–33.70
–0.63
–0.69
–0.71
–0.82
Acetylene
HCCH
–20.80
–0.25
–0.28
–0.29
–0.33
Acrylonitrile
CH
2
=CHCN
–24.10
–0.35
–0.39
–0.40
–0.46
Allyl alcohol
CH
2
CHCH
2
OH
–36.70
–0.71
–0.79
–0.81
–0.93
Ammonia
NH
3
–18.00
–0.17
–0.19
–0.20
–0.23
Argon
Ar
–19.60
–0.22
–0.24
–0.25
–0.29
Benzene
C
6
H
6
–54.84
–1.24
–1.36
–1.41
–1.62
Boron chloride
BCl
3
–59.90
–1.38
–1.53
–1.57
–1.81
Boron trifluoride
BF
3
–19.00
–0.20
–0.22
–0.23
–0.26
Bromine
Br
2
–73.50
–1.78
–1.96
–2.02
–2.32
1,2 Butadiene
C
4
H
6
–35.60
–0.68
–0.75
–0.77
–0.89
1,3 Butadiene
C
4
H
6
–30.60
–0.54
–0.59
–0.61
–0.70
N-Butane
C
4
H
10
–50.30
–1.11
–1.22
–1.26
–1.45
iso-Butane
(CH
3
)
2
CHCH
2
–51.70
–1.15
–1.26
–1.30
–1.50
1 Butene
CH
3
CH
2
CH=CH
2
–41.10
–0.84
–0.93
–0.96
–1.10
N–Butyl acetate
CH
3
COOC
4
H
9
–77.50
–1.89
–2.09
–2.15
–2.47
iso–Butylene
(CH
3
)
2
CH=CH
2
–44.40
–0.94
–1.03
–1.06
–1.22
1 Butyne (Ethylacetylene)
CH
3
C
3
H
2
–43.50
–0.91
–1.00
–1.03
–1.19
Carbon dioxide
CO
2
–21.00
–0.26
–0.29
–0.30
–0.34
Carbon disulphide
CS
2
–42.20
–0.87
–0.96
–0.99
–1.14
Carbon monoxide
CO
–9.80
0.06
0.07
0.07
0.08
Carbon tetrachloride
CCl
4
–66.60
–1.58
–1.74
–1.79
–2.06
Carbon tetrafluoride
CF
4
–31.20
–0.55
–0.61
–0.63
–0.72
Chlorine
Cl
2
–40.50
–0.82
–0.91
–0.94
–1.08
Chloro ethanol
ClCH
2
CH
2
OH
–51.40
–1.14
–1.25
–1.29
–1.49
Chloroform
CHCl
3
–59.30
–1.37
–1.51
–1.55
–1.78
Cumene
(CH
3
)
2
CHC
6
H
5
–89.53
–2.24
–2.47
–2.55
–2.93
Cyclohexane
C
6
H
12
–68.13
–1.62
–1.79
–1.84
–2.12
Cyclopentane
C
5
H
10
–59.18
–1.36
–1.50
–1.55
–1.70
Cyclopropane
C
3
H
6
–39.90
–0.81
–0.89
–0.92
–1.05
Diacetylene
C
4
H
2
–37.50
–0.74
–0.81
–0.84
–0.96
Dichloroethylene
(CHCl)
2
–49.20
–1.07
–1.18
–1.22
–1.40
Diethyl ether
(C
2
H
5
)
2
O
–55.10
–1.25
–1.37
–1.41
–1.63
2,2 Difluoro 1 chloroethane
CClH
2
CHF
2
–52.40
–1.17
–1.29
–1.33
–1.52
1,2 Difluoro 1,2 dichloroethylene
CFCl=CFCl
–60.00
–1.39
–1.53
–1.58
–1.81
Difluoro dichloro methane (Freon 12)
CCl
2
F
2
–52.20
–1.16
–1.28
–1.32
–1.5
Dimethoxy methane
CH
2
(OCH
3
)
2
–47.30
–1.02
–1.12
–1.16
–1.33
Dimethylamine
(CH
3
)
2
NH
–39.90
–0.81
–0.89
–0.92
–1.05
Dimethylether
CH
3
OCH
3
–26.30
–0.41
–0.46
–0.47
–0.54
Dimethylethylamine
(CH
3
)
2
NC
2
H
5
–63.60
–1.49
–1.64
–1.69
–1.95
05410001A / Revision 6 137