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OPERATION
M
AXIMUM
O
BTAINABLE
V
ACUUM
The maximum vacuum obtainable,
as measured by the oven gauge
, is in part a function of altitude
While a vacuum pump will evacuate the same percentage of atmosphere from the oven chamber at
higher altitudes, less
overall pressure
is expelled because of the reduced density.
Put differently, at sea level there are 29.9 inches of mercury pressure that can be drawn out of the
oven chamber by a vacuum pump. At 5000ft (1524m), there are only 24.9 inches of atmospheric
pressure to be evacuated from the oven chamber.
Altitude (Feet)
Altitude (Meters)
Atmospheric Pressure
Max Vac
Obtainable
Sea Level
Sea Level
14.70 psi
-29.9 inHg
1000ft
305m
14.16 psi
-28.9 inHg
2000ft
610m
13.66 psi
-27.8 inHg
3000ft
914m
13.16 psi
-26.8 inHg
4000ft
1219m
12.68 psi
-25.8 inHg
5000ft
1524m
12.22 psi
-24.9 inHg
6000ft
1829m
11.77 psi
-24.0 inHg
7000ft
2134m
11.33 psi
-23.1 inHg
8000ft
2438m
10.91 psi
-22.2 inHg
9000ft
2743m
10.50 psi
-21.4 inHg
10,000ft
3048m
10.10 psi
-20.6 inHg
*In gauge pressure
P
RESSURE
U
NITS
C
ONVERSION
C
HART
InHg
kPa
Kgf/cm
2
bar
psi
mmHG
mmH
2
O
1 inHg
1
3.3863
0.0345
0.3386
0.4911
25.400
345.32
1 kPa
0.2953
1
0.0102
0.01
0.1450
7.5006
101.97
1 Kgf/cm
2
28.9590
98.0665
1
0.9806
14.2233
735.55
10000.27
1 bar
29.5300
100
1.0197
1
14.5037
750.06
10197.44
1 psi
2.0360
6.8947
0.0703
0.0689
1
51.7150
703.09
1 mmHG
0.0394
1.3332
0.0014
0.0013
0.0193
1
13.5954
1 mmH
2
O
0.0028
0.0098
0.0001
0.0001
0.0014
0.0029
1
Summary of Contents for CVO-2
Page 1: ...Installation Operation Manual CVO 2 Benchtop Vacuum Ovens...
Page 6: ...6 P a g e cascadesciences com Tel 503 847 9047 TABLE OF CONTENTS...
Page 8: ...8 P a g e cascadesciences com Tel 503 847 9047 CERTIFICATIONS...
Page 12: ...12 P a g e cascadesciences com Tel 503 847 9047 SPECIFICATIONS...
Page 20: ...20 P a g e cascadesciences com Tel 503 847 9047 RECEIVING...
Page 30: ...30 P a g e cascadesciences com Tel 503 847 9047 INSTALLATION...
Page 32: ...32 P a g e cascadesciences com Tel 503 847 9047 SYMBOLS...
Page 50: ...50 P a g e cascadesciences com Tel 503 847 9047 MAINTENANCE...
Page 52: ......