FD TMS, Installation And Operation Manual

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Appendix 2 Conversion Coefficient of Common Gas
According to different gas on site, the calibration in lab translates the flow rate of actual gas on site
into flow rate of air, and then begins to calibrate the flow rate at present. Therefore, when using the meter
on site, the meter displays mass flow or volume flow of actual gas.
When translating the flow rate of gas into flow rate of air, there is a conversion coefficient table of different
gas.
Table 1 The Density and Conversion Coefficient of Common Gas
Gas
Specific heat
(Kal/g*
℃
)
Density
(g/l, 0
℃
)
Conversion
Coefficient
0 Air 0.24 1.2048 1.0000
1 Argon (Ar) 0.125 1.6605 1.4066
2 Arsine (AsH
3
) 0.1168 3.478 0.6690
3 Boron Tribromide (BBr
3
) 0.0647 11.18 0.3758
4 Boron Trichloride (BCl
3
) 0.1217 5.227 0.4274
5 Boron Trifluoride ( BF
3
) 0.1779 3.025 0.5050
6 Borane (B
2
H
6
) 0.502 1.235 0.4384
7 Carbon Tetrachloride (CCl
4
) 0.1297 6.86 0.3052
8 Carbon Tetrafluoride (CF
4
) 0.1659 3.9636 0.4255
9 Methane (CH
4
) 0.5318 0.715 0.7147
10 Acetylene (C
2
H
2
) 0.4049 1.162 0.5775
11 Ethylene (C
2
H
4
) 0.3658 1.251 0.5944
12 Ethane (C
2
H
6
) 0.4241 1.342 0.4781
13 Allylene (C
3
H
4
) 0.3633 1.787 0.4185
14 Propylene (C
3
H
6
) 0.3659 1.877 0.3956
15 Propane (C
3
H
8
) 0.399 1.967 0.3459
16 Butyne (C
4
H
6
) 0.3515 2.413 0.3201
17 Butene (C
4
H
8
) 0.3723 2.503 0.2923
18 Butane (C
4
H
10
) 0.413 2.593 0.2535
19 Pentane (C
5
H
12
) 0.3916 3.219 0.2157
20 Carbinol (CH
3
OH) 0.3277 1.43 0.5805
21 Ethanol (C
2
H
6
O) 0.3398 2.055 0.3897
22 Trichloroethane (C
3
H
3
Cl
3
) 0.1654 5.95 0.2763
23 Carbon Monoxide (CO) 0.2488 1.25 0.9940
24 Carbon Dioxide (CO
2
) 0.2017 1.964 0.7326
25 Cyanide (C
2
N
2
) 0.2608 2.322 0.4493
26 Chlorine (Cl
2
) 0.1145 3.163. 0.8529
27 Deuterium (D
2
) 1.7325 0.1798 0.9921
28 Fluoride (F
2
) 0.197 1.695 0.9255
29 Germanium Tetrachloride (GeCl
4
) 0.1072 9.565 0.2654
30 Germane (GeH
4
) 0.1405 3.418 0.5656