
72
customer.honeywell.com
70-6925
Pneumatic Damper Actuator Torque Ratings
TORQUE (LB-IN.) DELIVERED TO A 90-DEGREE STROKE DAMPER SHAFT:
a
Torque in this column is for modulating service only.
b
The lesser of retracted or extended shaft torque.
The following reference formulas are valid for actuators mounted on fixed brackets only.
Most dampers operate through a 90-degree arc. The amount of torque that a pneumatic actuator can deliver to the damper shaft
may be calculated from the net force delivered and the length of stroke of the actuator using the following equations:
T
R
=
Torque with actuator shaft retracted.
T
E
=
Torque with actuator shaft extended.
T
M
=
Midstroke torque.
F
R
=
Force exerted by actuator with shaft retracted.
F
E
=
Force exerted by actuator with shaft extended.
A
=
Effective area of actuator diaphragm.
S
=
Actuator stroke.
The midstroke is significant only for modulating service and is based on the premise that an input pressure change no greater than
1.5 psi (10 kPa) should cause the actuator to reposition the damper.
Actuator
Spring Range
Psi (kPa)
Stroke
in. (mm)
Delivered Torque lb-in. (N•m)
Shaft
Retracted
Midstroke
a
Shaft Extended
13 psi (90 kPa) main 18 psi (129 kPa) main 20 psi (138 kPa) main
MP913
10-15 (69-103)
5-10 (34-69)
1 (25)
1 (25)
11 (1.243)
6 (0.678)
2 (0.226)
2 (0.226)
0 (0)
3 (0.339)
3 (3.339)
9 (1.017)
5 (0.565)
13 (1.469)
MP916
3-12 (21-83)
4-8 (27-55)
5-12 (34-83)
2-1/4 (57)
2-1/4 (57)
2-1/4 (57)
41 (4.632)
51 (6.214)
69 (7.796)
26 (2.937)
26 (2.937)
26 (2.937)
14 (1.582)
69 (7.796)
14 (1.582)
138 (15.6)
138 (15.6)
82 (9.264)
109 (12.315)
166 (18.755)
109 (12.315)
MP909D
3-8 (21-55)
5-10 (34-70)
8-13 55-90)
5-10 (34-70)
2-3/8 (60)
2-3/8 (60)
2-3/8 (60)
3 (76)
10.7 (1.209)
17.9 (1.98)
28.6 (3.232)
22.5 (2.543)
7.6 (0.859)
7.6 (0.859)
7.6 (0.859)
9.5 (1.974)
17.9 (2.023)
10.7 (1.209)
0 (0)
13.5 (1.526)
35.7 (4.034)
28.6 (3.232)
17.9 (2.023)
36 (4.008)
42.8 (4.836)
35.7 (4.034)
25.0 (2.825)
45 (5.085)
MP909E
2.5-6.5 (17-45)
3-13 (21-90)
5-10 (34-70)
5-10 (34-70)
9-13 (62-90)
3.1 (79)
4 (101)
4 (101)
3.1 (79)
3.1 (79)
25.6 (2.893)
39.6 (4.475)
66 (7.458)
51.2 (5.786)
92.1 (10.41)
22 (2.486)
28 (3.164)
28 (3.164)
22 (2.486)
22 (2.486)
66.5 (7.515)
0 (0)
39.6 (4.475)
30.7 (3.469)
0 (0)
118 (13.33)
66 (7.058)
105.6 (11.93)
81.8 (9.243)
51.2 (5.786)
138 (15.59)
92.4 (10.44)
132 (14.92)
102 (11.53)
71.7 (8.102)
MP909H
9-13 (62-90)
plus positioner
3.1 (79)
92.1 (10.41)
b
0 (0)
66 (7.1)
92.4 (10.44)
MP918A
8-13 (55-90)
plus positioner
3-1/2 (89)
333 (37.63)
b
0 (0)
208 (23.5)
292 (33)
MP918B
3-7 (21-49)
3-13 (21-90)
5-10 (34-70)
8-13 (55-90)
3-1/2 (89)
3-1/2 (89)
3-1/2 (89)
3-1/2 (89)
125 (14.3)
125 (14.3)
208 (23.5)
333 (37.63)
88 (9.944)
88 (9.944)
88 (9.944)
88 (9.944)
250 (28.25)
0 (0)
125 (14.3)
0 (0)
458 (51.53)
208 (23.5)
333 (37.63)
208 (23.5)
541 (61.3)
292 (33)
416 (47.01)
292 (33)
MP920
7-13 (34-90)
6 (152)
520 (58.75)
158 (17.85)
0 (0)
372 (42.03)
521 (58.86)
T
R
F
R
S
×
2
----------------
=
T
M
1.5
A
0.707
S
×
×
=
T
E
F
E
S
×
2
----------------
=
Содержание VP525C
Страница 58: ...50 customer honeywell com 70 6925 ...
Страница 120: ...112 customer honeywell com 70 6925 ...
Страница 166: ...158 customer honeywell com 70 6925 ...