Instruction manual

Instruction Manual Smart-Trak
®
50 Series
IM-50 Rev. A.2 33
Gas Tables and K-factors
 If no O-ring material is specified then O-ring to be used is Viton. NEO is neoprene or equivalent. KR is DuPont Kalrez or
equivalent. Valve Seat applies only to controllers.
Actual Gas
Chemical
Symbol
K
-factor
Relative
to Air
Cp
(Cal/g)
Density
(g/l) @
70°F
Density
(g/l) @
0°C
Elastomers*
O-ring Valve
Seat
Acetylene C
2
H
2
.581 .4036 1.079 1.162
Air 1.000 .240 1.200 1.293
Allene (Propadiene) C
3
H
4
.431 .352 1.659 1.787 KR
Ammonia NH
3
.732 .492 .706 .760 NEO KR/NEO
Argon Ar 1.398 .1244 1.655 1.782
Arsine AsH
3
.671 .1167 3.229 3.478 KR
Boron Trichloride BCl
3
.411 .1279 4.852 5.227 800 Series Recommended
Boron Trifluoride BF
3
.511 .1778 2.808 3.025 KR
Boron Tribromide Br
3
.381 .0647 10.378 11.18 KR
Bromine Br
2
.812 .0539 6.619 7.130
Bromine Pentafluoride BrF
5
.261 .1369 7.244 7.803 KR
Bromine Trifluoride BrF
3
.381 .1161 5.670 6.108 KR
Bromotrifloromethane
(Freon-13 B1)
CBrF
3
.371 .1113 6.168 6.644
1,3-Butadiene C
4
H
6
.321 .3514 2.240 2.413
Butane C
4
H
10
.261 .4007 2.407 2.593 NEO KR
1-Butane C
4
H
8
.301 .3648 2.324 2.503 NEO KR
2-Butane C
4
H
8
CIS .325 .336 2.324 2.503 NEO KR
2-Butane C
4
H
8
TRANS .292 .374 2.324 2.503
Carbon Dioxide CO
2
.737 .2016 1.835 1.964
Carbon Disulfide CS
2
.601 .1428 3.153 3.397
Carbon Monoxide CO 1.002 .2488 1.160 1.250
Carbon Tetrachloride CCl
4
.311 .1655 6.368 6.860 KR
Carbon Tetrafluoride
(Freon-14)
CF
4
.421 .1654 3.645 3.926 KR
Carbonyl Fluoride COF
2
.541 .1710 2.734 2.945
Carbonyl Sulfide COS .661 .1651 2.488 2.680
Chlorine CL
2
.862 .114 2.936 3.163 800 Series Recommended
Chlorine Trifluoride CIF
3
.401 .1650 3.829 4.125 KR
Chlorodifluoromethane
(Freon-22)
CHClF
2
.461 .1544 3.581 3.858 KR
Chloroform CHCI
3
.391 .1309 4.944 5.326 KR
Chloropentafluoroethane
(Freon-115)
C
2
CIF
5
.241 .164 6.398 6.892 KR
Chlorotrifluromethane
(Freon-13)
CCIF
3
.381 .153 4.326 4.660 KR
Cyanogen C
2
N
2
.611 .2613 2.156 2.322 KR
Cyanogen Chloride CICN .611 .1739 2.545 2.742
Cychlopropane C
3
H
5
.461 .3177 1.742 1.877 KR
Deuterium D
2
1.002 .1722 1.670 1.799
Diborane B
2
H
6
.441 .508 1.147 1.235 KR
Dibromodifluoromethane CBr
2
F
2
.190 .15 8.691 9.362 KR
Dibromethane .471 .075 7.204 7.76 KR
Dichlorodifluoromethane
(Freon-12)
CCI
2
F
2
.351 .1432 5.008 5.395 KR
Dichlorofluoromethane
(Freon-21)
CHCl
2
F .421 .140 4.597 4.952 KR