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BoZhong (Shandong) Industrial Equipment Co., Ltd. | Part of the Atlas Copco Group
Address: No.50# YiDa Road, NanDing Town, Economic Development Zone, ZiBo, ShanDong, China
Tel: +86-533-2530388
Website: en.zbbz.com
Vacuum data and unit conversion
|
Vacuum region |
Pressure range |
|
|
Torr |
Pa |
|
|
Low vacuum |
760~10 |
101325~1333 |
|
Medium vacuum |
10~10-3 |
1333~1.33×10-1 |
|
High vacuum |
10-3~10-8 |
1.33×10-1~10-6 |
|
Ultra high vacuum |
10-8~10-12 |
10-6~10-10 |
|
Very high vacuum |
＜10-12 |
＜10-10 |
|
Unit |
m |
ft |
in |
|
1m |
1 |
3.28 |
39.37 |
|
1ft |
0.305 |
1 |
8.33 |
|
1 inch |
0.0254 |
12 |
1 |
3,Weight: kg - pound - oz conversion table
|
Unit |
kg |
lb |
oz |
|
1 kg |
1 |
2.2 |
35.27 |
|
1 pound |
0.45 |
1 |
16 |
|
1 oz |
0.03 |
0.06 |
1 |
4,A variety of vacuum gauges and gauge conversion table
|
Vacuum gauge name |
Resistance vacuum gauge |
Thermocouple vacuum gauge |
1.Hot cathode ionization vacuum gauge |
Cold cathode collision |
Medium vacuum gauge |
Ultra high vacuum gauge |
|
Name of gauge |
Resistance gauge |
Thermocouple gauge |
Ionization gauge |
Cold cathode gauge |
Middle vacuum gauge |
B-A gauge |
|
Gauge model |
ZJ-52T |
ZJ-51(DL-3) |
ZJ-27(DL-9) |
M014 |
DL-5 |
ZJ-32 |
5,Absolute temperature, Celsius, Fahrenheit temperature conversion table
|
Temperature form |
K(Absolute temperature) |
℃ |
°F |
|
K |
1 |
℃+273.15 |
5/9(°F+459.67) |
|
℃ |
K-273.15 |
1 |
5/9(°F-32) |
|
°F |
9/5(K-459.67) |
9/5(℃+32) |
1 |
6,Suction ration unit conversion table
|
Unit |
m3/s(m3/s) |
L/S(L/s) |
m3/h |
Inch3/min |
|
11m3/s(1m3/s) |
1 |
1000 |
3600 |
2118.88 |
|
1L/s(1L/s) |
10-3 |
1 |
3.6 |
2.119 |
|
11m3/h(1m3/h) |
2.78×10-4 |
0.278 |
1 |
0.59 |
|
1cft/min(1cft/min) |
4.72×10-4 |
0.47 |
1.69 |
1 |
7,Resistivity of all kinds of water (Ohm)
|
Water |
Seawater |
Poor quality tap water |
High quality tap water |
Distilled water |
Super clean water |
|
Resistivity |
10~10-2 |
103 |
104~105 |
106 |
107~108 |
8,Air Molecular mean free path under different pressures 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,Commonly used pressure unit conversion table
|
Pa
Pa |
Torr
Torr |
μmHg
μmHg |
μbar
μbar |
mbar
mbar |
atm
atm |
am
am |
inHg
inHg |
lb/in2
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,Molecular density of air under different pressure
|
P(Torr) |
1 |
10-3 |
10-4 |
10-5 |
10-6 |
10-9 |
|
n0(piece/cm3) |
4×1016 |
4×1013 |
4×1012 |
4×1011 |
4×1010 |
4×107 |
11,Main properties of vacuum grease
|
Name |
Composition |
Saturated vapor pressure (Torr) at 20 ℃ |
Maximum use temperature (℃) |
|
2# |
Polymer carbon |
3.1×10-8 |
30 |
|
3# |
Oxygen compounds |
10-9 |
35 |
|
4# |
Soap grease |
10-7~10-8 |
130 |
|
7501 |
Silicone oil plus of silica powder |
10-6The following |
-40~+200 |
|
Dyn(Dyn)
|
N(N) |
sthene
|
kgf(kgf)
|
|
1
|
10-5
|
10-8
|
1.02×10-6
|
|
Unit
|
Horsepower
|
KW
|
W
|
|
PS(PS)
|
1
|
0.735
|
735
|
|
kw(kW）
|
1.36
|
1
|
1000
|
|
w(W)
|
0.00136
|
0.001
|
1
|
14,Vacuum sealing grease characteristic
|
Vacuum sealing grease name |
Vacuum
|
vacuum cement
|
|
|
50＃
|
80＃
|
30＃
|
|
|
Temperature
|
50℃
|
80℃
|
30℃
|
|
10-7~10-8Torr
|
10-7~10-8Torr
|
5×10-4Torr
|
|
15,Characteristic table of various rubber
|
Types of rubber |
Natural rubber
|
Butyl rubber
|
Nitrile rubbe
|
Fluorine rubber
|
|
Characteristic1
|
Water resistance, acid resistance, good alkali resistance
|
Small permeability
|
Good oil resistance
|
23-type resistance to strong acid
|
|
Characteristic2
|
A large amount of discharging gas
|
Severe sublimation
|
Better elasticity
|
26-type has low permeability and small discharging gas rate
|
|
Vacuum range
|
1×10－5Torr
|
10－7Torr
|
10－8Torr
|
10-8Torr
|
|
temperature
|
－30~80℃
|
－30~150℃
|
－30~120℃
|
-20~200℃
|
|
m2(m2) |
cm2(cm2) |
mm2(mm2) |
sc2(sc2) |
ft2(ft2) |
in2(in2) |
|
1 |
10000 |
1000000 |
9 |
10.7639 |
1550 |
|
m3 |
L |
Cubic Shichi |
British gallon |
American gallon (liquid) |
Cubic feet |
Cubic inch |
日升Sunrise |
|
1 |
1000 |
27 |
219.98 |
264.18 |
35.3147 |
0.06103 |
554.37 |
18,The main performance indexes of oil in NO.1 vacuum mechanical pump
|
Item |
Kinematic viscosity (CPS) |
Flash point (℃) |
Saturated vapor pressure at 20℃(Torr) |
Specific gravity (g / cm 3)) |
Molecular weight (g) |
|
KK-1 |
50℃(47~57) |
Not less than15 |
Not higher than4×10-5 |
0.86 |
333 |
19,Performance indexes of oil in domestic diffusion pump
|
Grade |
1# |
2# |
3# |
274silicone oil |
275silicone oil |
|
Saturated vapor pressure (Torr) at20℃not greater than |
4×10-8 |
2×10-8 |
2×10-8 |
2×10-8 |
1.7×10-8 |
|
Kinematic viscosity (CPS) |
45~60 |
55~65 |
68~80 |
38±3 |
165±20 |
|
Freezing point (℃) not higher than |
-15 |
-15 |
-15 |
-10 |
-14~-18 |
|
Flash point (℃) not less than |
230 |
230 |
230 |
＞210 |
＞243 |
|
Specific gravity (g / cm 2) |
1.05~1.08 |
1.09±0.02 |
20,Types of vacuum pumps and their working range
|
Vacuum pump |
Working range (Torr) |
Vacuum pump |
Working range (Torr) |
|
|
Rotary vane vacuum pump |
760~5×10-4 |
Reciprocating vacuum pump |
760~10-2 |
|
|
Rotary plunger vacuum pump |
760~5×10-3 |
Adsorption pump |
760~10-4 |
|
|
Oil booster pump |
10-1~10-4 |
Sputter ion pump |
10-4~10-10 |
|
|
Roots vacuum pump |
10-1~10-4 |
Titanium sublimation pump |
10-3~10-10 |
|
|
Oil diffusion pump |
10-3~5×10-7 |
Molecular pump |
10-3~10-10 |
|
|
Water ring vacuum pump |
760~25 |
Low temperature pump |
10-3~10-10 |
21,Saturated vapor pressure of water at various temperatures
|
Temperature |
Vapor pressure mmHg |
Temperature |
Vapor pressure mmHg |
Temperature |
Vapor pressure mmHg |
Temperature |
Vapor pressure mmHg |
Temperature |
Vapor pressure mmHg |
|
-20 |
0.772 |
5 |
6.54 |
30 |
31.82 |
55 |
118.0 |
80 |
355.1 |
|
-19 |
0.85 |
6 |
7.01 |
31 |
33.70 |
56 |
123.8 |
81 |
369.7 |
|
-18 |
0.935 |
7 |
7.51 |
32 |
35.66 |
57 |
129.8 |
82 |
384.9 |
|
-17 |
1.027 |
8 |
8.05 |
33 |
37.73 |
58 |
136.1 |
83 |
400.6 |
|
-16 |
1.128 |
9 |
8.61 |
34 |
39.90 |
59 |
142.6 |
84 |
416.8 |
|
-15 |
1.238 |
10 |
9.21 |
35 |
42.18 |
60 |
149.4 |
85 |
433.6 |
|
-14 |
1.357 |
11 |
9.84 |
36 |
44.56 |
61 |
156.4 |
86 |
450.9 |
|
-13 |
1.486 |
12 |
10.52 |
37 |
47.07 |
62 |
163.8 |
87 |
468.7 |
|
-12 |
1.627 |
13 |
11.23 |
38 |
49.65 |
63 |
171.4 |
88 |
487.1 |
|
-11 |
1.780 |
14 |
11.99 |
39 |
52.44 |
64 |
179.3 |
89 |
506.1 |
|
-10 |
1.946 |
15 |
12.79 |
40 |
55.32 |
65 |
187.5 |
90 |
525.8 |
|
-9 |
2.215 |
16 |
13.63 |
41 |
58.34 |
66 |
196.1 |
91 |
546.1 |
|
-8 |
2.321 |
17 |
14.53 |
42 |
61.50 |
67 |
205.0 |
92 |
567.0 |
|
-7 |
2.532 |
18 |
15.48 |
43 |
64.80 |
68 |
214.2 |
93 |
588.6 |
|
-6 |
2.761 |
19 |
16.48 |
44 |
68.26 |
69 |
223.7 |
94 |
610.9 |
|
-5 |
3.008 |
20 |
17.54 |
45 |
71.88 |
70 |
233.7 |
95 |
633.9 |
|
-4 |
3.276 |
21 |
18.65 |
46 |
75.65 |
71 |
243.9 |
96 |
657.6 |
|
-3 |
3.566 |
22 |
19.83 |
47 |
79.60 |
72 |
254.6 |
97 |
682.1 |
|
-2 |
3.879 |
23 |
21.07 |
48 |
83.71 |
73 |
265.7 |
98 |
707.3 |
|
-1 |
4.216 |
24 |
22.38 |
49 |
88.02 |
74 |
277.2 |
99 |
733.2 |
|
0 |
4.579 |
25 |
23.76 |
50 |
92.51 |
75 |
289.1 |
100 |
760.0 |
|
1 |
4.930 |
26 |
25.21 |
51 |
97.20 |
76 |
301.4 |
|
|
|
2 |
5.290 |
27 |
26.74 |
52 |
102.1 |
77 |
314.1 |
|
|
|
3 |
5.690 |
28 |
28.35 |
53 |
107.2 |
78 |
327.3 |
|
|
|
4 |
6.10 |
29 |
30.04 |
54 |
112.5 |
79 |
341.0 |
|
|
22,Some of the material melting point, melting heat, boiling and heat of vaporization
|
Material
|
Melting
（℃） |
Heat of fusion
（Cal/g) |
Boiling
（℃） |
Vaporization
（Cal/g） |
|
Alcohol
|
-114
|
23.54
|
78
|
204
|
|
Carbon disulfide
|
-112
|
45.3
|
46.25
|
84
|
|
Ammonia
|
-77.7
|
81.3
|
-33
|
327
|
|
Turpentine
|
-10
|
80
|
160
|
-
|
|
Ice
|
0
|
80
|
100
|
539
|
|
Naphthalene
|
80
|
33
|
218
|
50.5
|
|
Pig iron
|
1100~1200
|
8
|
2450
|
93
|
|
Carbon monoxide
|
-200
|
46.68
|
-190
|
263
|
|
Acetic acid
|
16.6
|
16.4
|
118.3
|
104
|
|
Methanol
|
-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
|
－
|
BoZhong (Shandong) Industrial Equipment Co., Ltd. | Part of the Atlas Copco Group
Address: No.50# YiDa Road, NanDing Town, Economic Development Zone, ZiBo, ShanDong, China
Tel: +86-533-2530388
Website: en.zbbz.com
Copyright©2016 BoZhong (Shandong) Industrial Equipment Co., Ltd.