Table 1
Total Time
To Open
Total Time
To Close
Total Time
To Open
Total Time
To Close
0.75
1
0.5
-
-
1
1.2
0.7
-
-
1.5
1.4
0.9
-
-
1
2.7
1.5
0.3
0.1
2
3.7
2.6
0.3
0.2
3
4.6
3.6
0.4
0.3
2
9.2
5.6
0.6
0.4
3
11.1
7.7
0.8
0.5
4
12.8
9.6
1
0.7
6
15.8
13
1.2
0.9
8
18.6
16.2
1.4
1.1
10
21.2
19.5
1.5
1.4
12
23.6
22.8
1.7
1.6
18
29.2
28.9
2.1
2.1
24
32.3
32.1
2.4
2.3
2
15.2
11.2
1
0.8
3
18.9
15.2
1.4
1.1
4
22.3
18.8
1.7
1.3
6
28.5
25.1
2.1
1.8
8
34.3
30.9
2.6
2.3
10
39.9
36.8
3
2.7
12
45.1
42.6
3.4
3.2
18
60
58.4
4.6
4.5
24
68.9
68.1
5.3
5.2
3
26.9
22.9
2.1
1.8
4
31.9
28.3
2.5
2.3
6
41.3
37.6
3.3
3
8
50.1
46.1
4.1
3.7
10
58.5
54.4
4.8
4.4
12
66.6
62.8
5.6
5.2
18
89.3
85.9
7.7
7.2
24
103.1
99.9
9.1
8.6
100 (1/4-inch tubing)
200 (3/8-inch tubing)
300 (3/8-inch tubing)
Actuator Size (sq. in.)
Stroke
(inches)
Estimated Stroking Speeds
(1)
Without Boosters
With Boosters
25 (1/4-inch tubing)
50 (1/4-inch tubing)
NOTE: Data is based on tests with boosters connected to the top and bottom ports of a spring
cylinder actuator with a fail-close, standard spring and Beta positioner with I/P module, calibrated at
4-20 mA; 80 psi supply air to positioner and boosters.
NOTE: Divide stroking times by two when using two boosters on each cylinder port and ¾-inch NPT
supply air pipes.
(1)
Times are in seconds, are estimated and will vary slightly with different packing sets, plugs,
seals, failure modes, etc.
(2)
Listed tubing size is from positioner to actuator on systems without boosters, or to booster input
signal on systems with boosters. All supply air tubing to boosters is ¾-inch.
Содержание Valtek Mark
Страница 12: ...NOTES ...
Страница 13: ......
