![background image](http://html1.mh-extra.com/html/varian/sentorr/sentorr_instruction-manual_3552376034.webp)
Appendix
A-3
Relative Ionization Gauge
Substance
Formula
Gas Correction Factor
Ethyl ether
(C
2
H
5
)
2
O
5.1
5.1
Ethylene
C
2
H
4
2.3
2.4
2.2
2.2 to 2.5
Ethylene oxide
(CH
2
)
2
O
2.5
Helium
He
0.18
0.15
0.13
0.12
Heptane
C
7
H
16
8.6
Hexadiene:
1.5
·
1.5
·
C
5
H
10
6.4
cyclo
·
CY
·
C
6
H
10
6.0
Hexane
C
6
H
14
6.6
Hexene:
1
·
1
·
C
6
H
12
5.9
cyclo
CY
·
C
6
H
10
6.4
Hydrogen
H
2
0.46
0.38
0.41
0.45
0.44
Hydrogen Bromide
HBr
2.0
Hydrogen Chloride
HCl
1.5
1.6
2.0
1.5
Hydrogen Cyanide
HCN
1.5
1.6
Hydrogen Floride
HF
1.4
Hydrogen Iodide
HI
3.1
Hydrogen Sulfide
H
2
S
2.2
2.2
2.3
2.1
Iodine
I
2
5.4
Iodomethane
CH
3
I
4.2
Isoamyl Alcohol
C
5
H
11
OH
2.9
Isobutylene
C
4
H
8
3.6
Krypton
Kr
1.9
1.7
1.7
Lithium
Li
1.9
Mercury
Hg
3.6
Methane
CH
4
1.4
1.5
1.6
1.4 to 1.8
1.5
1.5
Methanol
CH
3
OH
1.8
1.9
Mehtyl Acetate
CH
3
COOCH
3
4.0
Mythyl ether
(CH
3
)
2
O
3.0
3.0
Relative Ionization Gauge
Substance
Formula
Gas Correction Factor
Naphthalene
C
10
H
8
9.7
Neon
Ne
0.30
0.31
Nitrobenzene
C
6
H
5
NO
2
7.2
Nitrogen
N
2
1.0
Nitrotoluene (o
·
, m
·
, p
·
) C
6
H
4
CH
3
NO
2
8.5
Nitric Oxide
NO
1.3
1.2
1.0
Nitrous Oxide
N
2
O
1.5
1.7
1.7
1.3 to 2.1
Oxygen
O
2
1.0
1.1
0.9
0.9
Pentane
n
·
n
·
C
5
H
17
6.2
6.0
5.7
ISO
·
ISO
·
C
5
H
17
6.0
neo
·
(CH
3
)
4
C
5.7
Phenol
C
6
H
5
OH
6.2
Phosphine
PH
3
2.6
Potassium
K
3.6
Propane
C
3
H
8
4.2
3.7
3.7 to 3.9
3.6
Propene oxide
C
3
H
6
O
3.9
Propene:
n
·
n
·
C
3
H
6
3.3
3.2 to 3.7
cyclo
·
cy
·
C
3
H
6
3.6
Rubidum
Rb
4.3
Silver perchlorate
AgCIO
4
3.6
Sodium
Na
3.0
Stannic iodide
SnI
4
6.7
Sulphur Dioxide
SO
2
2.1
2.3
Sulphur Hexafloride
SF
6
2.3
2.8
Toluene
C
6
H
5
CH
3
6.8
Trinitrobenzene
C
6
H
3
(NO
2
)
3
9.0
Water
H
2
O
1.1
1.0
0.8
Xenon
Xe
2.9
2.2
2.4
Xylene:
o
·
o
·
C
6
H
4
(CH
3
)
2
7.8
p
·
p
·
C
6
H
4
(CH
3
)
2
7.9