Principle Of Operation - Emerson Fisher 1052 Instruction Manual

Rotary actuator with h mounting adaptation

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Instruction Manual

D100323X012

Figure 3. Center of Gravity Dimensions

58.7

(2.31)

NOTE:

CENTER OF GRAVITY INCLUDES YOKE WEIGHT.

14B8083-A

Note

Find dimensions and center of gravity information in figures 3 and 4 and the approximate weight in table 1. This information is

required for fabrication of the proper bracket and coupling.

1. Attach an appropriate mounting bracket (not provided) to the mounting plate (key 22) in the desired orientation

with the cap screws (key 78). See figure 4 for mounting dimensions on the mounting plate. Tighten the cap screws

to the value in table 2.

2. Consult figure 5 for available mounting styles and positions. The actuator is normally positioned vertically with the

valve or other equipment in a horizontal pipeline.

Note

If the milled flats on the end of the actuator output shaft (key 87) are oriented so that the output shaft cannot accommodate the

operated equipment shaft, refer to the Changing Positions procedure of the Changing Actuator Mounting section. This procedure

describes how the output shaft can be repositioned to accommodate the operated equipment shaft.

3. Slide the actuator (with the user‐provided mounting bracket attached) into the user‐provided coupling on the

operated shaft. Then, secure the actuator to the operated equipment in the desired mounting position with

appropriate fasteners, such as mounting cap screws. See figure 4 for output shaft dimensions.

Principle of Operation

Refer to figure 6. The diaphragm rod (key 10) moves down as loading pressure is increased on top of the diaphragm

(key 3). As the loading pressure is decreased, the spring (key 11) forces the diaphragm rod upward.

125

(4.91)

(INCH)

1052 Size 20 Actuator (H)

June 2017

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