Description
21
GA03108_002_C1 - 04/2018 - © Leybold
Maximum permissible differential pressures for the RUVAC WS in mbar
WS 251 & WS 501
Operation at
50 Hz
60 Hz
80 Hz
100 Hz
Pump ratio
1:1 -
1:4
1:5 -
1:7
1:8 -
1:15
1:1 -
1:4
1:5 -
1:7
1:8 -
1:15
1:1 -
1:4
1:5 -
1:7
1:8 -
1:15
1:1 -
1:4
1:5 -
1:7
1:8 -
1:15
Continuous operation
80
63
53
57
46
38
34
28
23
28
23
19
Duty cycle 50%
103
93
79
81
67
57
50
40
34
43
34
28
Duty cycle 25%
103
103
103
84
84
84
58
58
53
47
47
43
Pumpdown from atmosphere
(< 2 min)
103
103
103
84
84
84
58
58
58
47
47
47
WS 1001
Operation at
50 Hz
60 Hz
80 Hz
100 Hz
Pump ratio
1:1 -
1:4
1:5 -
1:7
1:8 -
1:15
1:1 -
1:4
1:5 -
1:7
1:8 -
1:15
1:1 -
1:4
1:5 -
1:7
1:8 -
1:15
1:1 -
1:4
1:5 -
1:7
1:8 -
1:15
Continuous operation
80
62
50
44
34
27
17
13
11
7
5
4
Duty cycle 50%
94
92
75
63
48
40
25
20
16
10
8
6
Duty cycle 25%
94
94
94
78
74
62
37
30
25
16
13
11
Pumpdown from atmosphere
(< 2 min)
94
94
94
78
78
78
48
48
48
32
32
32
WS 2001
Operation at
50 Hz
60 Hz
80 Hz
100 Hz
Pump ratio
1:1 -
1:4
1:5 -
1:7
1:8 -
1:15
1:1 -
1:4
1:5 -
1:7
1:8 -
1:15
1:1 -
1:4
1:5 -
1:7
1:8 -
1:15
1:1 -
1:4
1:5 -
1:7
1:8 -
1:15
Continuous operation
50
37
30
34
26
21
16
12
10
4
3
2
Duty cycle 50%
75
56
45
50
39
32
20
15
13
5
4
4
Duty cycle 25%
80
80
69
67
60
48
28
22
18
6
5
4
Pumpdown from atmosphere
(< 2 min)
80
80
80
67
67
67
50
50
50
40
40
40