The vacuum usual data and unit conversion
1.Division of the vacuum region
|
vacuum region |
pressure scope |
|
|
Torr |
Pa |
|
|
low vacuum |
760~10 |
101325~1333 |
|
middle vacuum |
10~10-3 |
1333~1.33×10-1 |
|
high vacuum |
10-3~10-8 |
1.33×10-1~10-6 |
|
ultrahigh vacuum |
10-8~10-12 |
10-6~10-10 |
|
sky-high vacuum |
＜10-12 |
＜10-10 |
2、Length：metric system-english system contrast table
|
unit |
meter(m) |
foot(ft) |
inch(in) |
|
1meter(1m) |
1 |
3.28 |
39.37 |
|
1foot(1ft) |
0.305 |
1 |
8.33 |
|
1inch |
0.0254 |
12 |
1 |
3、weight：kilogram-pound-ounce contrast table
|
unit |
kilogram(kg) |
pound(Ib) |
ounce(oz) |
|
1kilogram |
1 |
2.2 |
35.27 |
|
1pound |
0.45 |
1 |
16 |
|
1ounce |
0.03 |
0.06 |
1 |
4、Various vacuum meter and guage pipe contrast table
|
vacuum meter name |
resistance |
heat-coupling vacuum meter |
1.hot ka. |
cold ka.meeting control vacuum meter |
middle |
ultihigher |
|
gauge pipe name |
resistance gauge pipe |
heat-coupling gauge pipe |
ionization gauge pipe |
cold ka. gauge pipe |
middle vacuum gauge pimp |
B-A gauge pipe |
|
compasses pipe type |
ZJ-52T |
ZJ-51(DL-3) |
ZJ-27(DL-9) |
M014 |
DL-5 |
ZJ-32 |
5、Absolute temperature,Celsius,Fahrenheit contrast table
|
Temperature type |
K(Absolute temperature) |
℃(Celsuis) |
°F(Fahrenheit) |
|
K(A) |
1 |
℃+273.15 |
5/9(°F+459.67) |
|
℃(Celsuis) |
K-273.15 |
1 |
5/9(°F-32) |
|
°F(Fahrenheit) |
9/5(K-459.67) |
9/5(℃+32) |
1 |
6.Suction capacity unit conversion table
|
Unit |
(m3/s) |
(L/s) |
m3/h |
cft/min |
|
(1m3/s) |
1 |
1000 |
3600 |
2118.88 |
|
(1L/s) |
10-3 |
1 |
3.6 |
2.119 |
|
(1m3/h) |
2.78×10-4 |
0.278 |
1 |
0.59 |
|
(1cft/min) |
4.72×10-4 |
0.47 |
1.69 |
1 |
7、Resistivity of the various water(ohm)
|
water |
seawater |
low-grade |
high grade |
distilled |
hyperploid |
|
resistance rate |
10~10-2 |
103 |
104~105 |
106 |
107~108 |
8、Molecule average free distance at different pressure of the air at 20℃
|
P(Torr) |
1 |
10-3 |
10-4 |
10-5 |
10-6 |
10-9 |
|
λ(cm) |
4.72×10-3 |
4.72 |
47.2 |
472 |
4720 |
4.72×106 |
9、The usual pressure unit conversion table
|
帕
Pa |
托
Torr |
微米汞柱
μmHg |
微巴
μbar |
毫巴
mbar |
大气压
atm |
工程大气压
am |
英寸汞柱
inHg |
磅/英寸2
lb/in2 |
|
|
1 Pa
|
1
|
7.5
×10-3 |
7.5
|
10
|
10-2
|
9.86923 |
1.0197
×105 |
2.953
×10-4 |
1.450
×10-4 |
|
1 Torr
|
133.32
|
1
|
103
|
1333.2
|
1.3332
|
1.31579
×10-3 |
1.3595
×10-3 |
3.937
×10-2 |
1.934
×10-2 |
|
1 μmHg
|
0.13332
|
10-3
|
1
|
1.3332
|
1.3332
×10-3 |
1.31579
×10-6 |
1.3595
×10-6 |
3.937
×10-5 |
1.934
×10-5 |
|
1 μbar
|
10-1
|
7.5
×10-4 |
7.5
×10-1 |
1
|
10-3
|
9.86923
×10-7 |
1.0197
×10-6 |
2.953
×10-5 |
1.450
×10-5 |
|
1 mbar
|
102
|
7.5 |
7.5
×102 |
103
|
1
|
9.86923
×10-4 |
1.0197
×10-3 |
2.953
×10-2 |
1.450
×10-2 |
|
1 atm
|
101325
|
760
|
760×103
|
1013.25
×103 |
1013.25
|
1
|
1.0333
|
29.921
|
14.696
|
|
1 am
|
98066.3
|
735.56
|
735.56
×103 |
980663
|
980663
×10-3 |
0.967839
|
1
|
28.959
|
14.223
|
|
1 inHg
|
3386
|
25.4
|
25.4×103
|
3.386×104
|
33.86
|
3.342
×10-2 |
3.453
×10-2 |
1
|
4.912
×10-1 |
|
1 lb/in2
|
6895
|
51.715
|
51.715
×103 |
6.895×104
|
68.95
|
6.805
×10-2 |
7.031
×10-2 |
2.086
|
1
|
10、The air molecule indensity at different pressure
|
P(Torr) |
1 |
10-3 |
10-4 |
10-5 |
10-6 |
10-9 |
|
n0(Entries/cm3) |
4×1016 |
4×1013 |
4×1012 |
4×1011 |
4×1010 |
4×107 |
11、The main parameter of the vacuum grease
|
Name |
Component |
the saturated steam pressure at 20℃(Torr) |
Max temperature permitted usage (℃) |
|
2# |
macromolecule carbon |
3.1×10-8 |
30 |
|
3# |
oxid |
10-9 |
35 |
|
4# |
Soap base oil |
10-7~10-8 |
130 |
|
7501 |
Silicon oil and silicon powder |
10-6以下 |
-40~+200 |
|
Dyne(Dyn)
|
Newton(N) |
Stan
|
kilogram force(kgf)
|
|
1
|
10-5
|
10-8
|
1.02×10-6
|
|
Unit
|
PS
|
kW
|
W
|
|
Horse power(PS)
|
1
|
0.735
|
735
|
|
kilowatt(kW）
|
1.36
|
1
|
1000
|
|
watt(W)
|
1.36
|
0.001
|
1
|
14、The characteristics of the vacuum seal grease
|
Vacuum resin name |
Vacuum seal resin
|
vacuum seal mud
|
|
|
50＃
|
80＃
|
30＃
|
|
|
temperature
|
50℃
|
80℃
|
30℃
|
|
10-7~10-8Torr
|
10-7~10-8Torr
|
5×10-4Torr
|
|
15、Various rub's charateristics table
|
Rub category |
natural rub
|
Butyl rubber
|
NBR
|
Fluororubber
|
|
Characteristic1
|
Fine performance of water-fast,acidproof,alkalescence-resistant
|
Pervasion rate is small
|
oil-proof nicer
|
23type strong acidproof
|
|
Characteristic2
|
higher suction capacity
|
Sublimation serverity
|
flexibility
nicer |
26 type infiltration rate is
low,the degassing small
|
|
vacuum range
|
1×10－5Torr
|
10－7Torr
|
10－8Torr
|
10-8Torr
|
|
Temperature
|
－30~80℃
|
－30~150℃
|
－30~120℃
|
-20~200℃
|
|
平方米(m2) |
平方厘米(cm2) |
平方毫米(mm2) |
平方市尺(sc2) |
平方英尺(ft2) |
平方英寸(in2) |
|
1 |
10000 |
1000000 |
9 |
10.7639 |
1550 |
|
立方米(m3) |
升(L) |
立方市尺(sc3) |
英加仑 |
美加仑(液体) |
立方英尺 (ft3) |
立方英寸(inch2) |
日升 |
|
1 |
1000 |
27 |
219.98 |
264.18 |
35.3147 |
0.06103 |
554.37 |
18、The parameter of the 1# pump oil
|
Project |
movement sticky degree(centipoise) |
flash point(℃) |
saturated steam temperature at 20℃(托) |
specific gravity(g/cm3) |
molecule weight(g) |
|
KK-1 |
50℃时(47~57) |
≥15 |
≤4×10-5 |
0.86 |
333 |
19、The brief parameterof the diffussing pump oil made in china
|
Brand number |
1# |
2# |
3# |
274 silicon oil |
275 silicon oil |
|
saturated steam temperature is not higher than (Torr)20℃ |
4×10-8 |
2×10-8 |
2×10-8 |
2×10-8 |
1.7×10-8 |
|
movement sticky degree(centipoise) |
45~60 |
55~65 |
68~80 |
38±3 |
165±20 |
|
freezing point is not high than(℃) |
-15 |
-15 |
-15 |
-10 |
-14~-18 |
|
flash point isn't lower than(℃) |
230 |
230 |
230 |
＞210 |
＞243 |
|
specific gravity(g/cm2) |
1.05~1.08 |
1.09±0.02 |
20、Category and work scope of the vacuum pump
|
vacuum pump |
work scope |
vacuum pump |
work scope |
|
|
Rotary vacuum pump |
760~5×10-4 |
Reciprocating |
760~10-2 |
|
|
Rotary piston |
760~5×10-3 |
Adsorbent |
760~10-4 |
|
|
Oil supercharger vacuum pump |
10-1~10-4 |
Sputter ion pump |
10-4~10-10 |
|
|
Roots vacuum pump |
10-1~10-4 |
Ti ionization vacuum pump |
10-3~10-10 |
|
|
Oil diffussion vacuum pump |
10-3~5×10-7 |
Molecule vacuum pump |
10-3~10-10 |
|
|
water ring |
760~25 |
low temperature vacuum pump |
10-3~10-10 |
21、The saturated steam temperature of the water
|
Temperature |
Pressure |
Temperature |
pressure |
|||
|
℃ |
Pa |
Torr |
℃ |
Pa |
Torr |
|
|
-13 |
225.4 |
1.691 |
-10 |
386.5 |
2.149 |
|
|
-7 |
361.9 |
2.715 |
-3 |
489.6 |
3.673 |
|
|
0 |
610.4 |
4.579 |
3 |
757.8 |
5.685 |
|
|
7 |
1001 |
7.513 |
10 |
1228 |
9.209 |
|
|
13 |
1497 |
11.23 |
17 |
1937 |
14.53 |
|
|
20 |
2337 |
17.54 |
23 |
2808 |
21.07 |
|
|
27 |
3564 |
26.74 |
30 |
4242 |
31.82 |
|
|
33 |
5029 |
37.73 |
37 |
6274 |
47.07 |
|
|
40 |
7378 |
55.32 |
43 |
8638 |
64.80 |
|
|
47 |
10610 |
79.60 |
50 |
12330 |
92.51 |
|
|
53 |
14290 |
107.2 |
57 |
17310 |
129.8 |
|
|
60 |
19910 |
149.4 |
63 |
22840 |
171.4 |
|
|
67 |
27320 |
205.0 |
73 |
35420 |
265.7 |
|
|
77 |
41870 |
314.1 |
83 |
53400 |
400.6 |
|
|
87 |
62480 |
468.7 |
93 |
78460 |
588.6 |
|
|
97 |
90920 |
682.1 |
100 |
101325 |
760.0 |
|
|
101 |
104980 |
787.6 |
||||
22、 Some substance's melting point,heat fuse, boiling point,and vaporization heat
|
substance
|
melting point
（℃） |
heat fuse
（Cal/g) |
boiling point
（℃） |
vaporization heat
（Cal/g） |
|
alcohol
|
-114
|
23.54
|
78
|
204
|
|
CS2
|
-112
|
45.3
|
46.25
|
84
|
|
ammonia
|
-77.7
|
81.3
|
-33
|
327
|
|
pine burl oil
|
-10
|
80
|
160
|
-
|
|
ice
|
0
|
80
|
100
|
539
|
|
naphthalene
|
80
|
33
|
218
|
50.5
|
|
iron
|
1100~1200
|
8
|
2450
|
93
|
|
CO
|
-200
|
46.68
|
-190
|
263
|
|
acetate
|
16.6
|
16.4
|
118.3
|
104
|
|
methyl alcohol
|
-97.1
|
20.95
|
64.7
|
94
|
|
aniline
|
-6.24
|
30.24
|
184.3
|
124
|
|
benzene
|
5.48
|
－
|
82.2
|
－
|
|
acetone
|
-96.5
|
－
|
56.1
|
－
|