Installing The 3722 Converter - Emerson Fisher 3710 Instruction Manual

3710 and 3720 Positioners
September 2017
Table 4. Positioner to Actuator Mountings
Direct Mounting to Actuator Cover Plate
S1051, size 30
(2)
, 40, and 60
S1052, sizes 30 (2)
, 40, 60, and 70
S1061, size 30, 40, 60, and 68
1. Includes purge tube option.
2. The size 30 actuator is no longer manufactured by Emerson. 3710 and 3720 positioners are available for field installation on existing size 30 actuators.
Specifications
Specifications are shown in table 1.
Educational Services
For information on available courses for 3710 pneumatic positioners or 3720 electro‐pneumatics positioners, as well
as a variety of other products, contact:
Emerson Automation Solutions
Educational Services, Registration
Phone: +1-641-754-3771 or +1-800-338-8158
e‐mail: education@emerson.com
emerson.com/fishervalvetraining

Installing the 3722 Converter

See figure 3.
WARNING
Avoid personal injury from sudden release of process pressure. Before mounting the 3720 electro‐pneumatic positioner or
3722 electro‐pneumatic converter:
D Wear protective eyewear, gloves and clothing whenever possible.
D Do not remove the actuator from the valve while the valve is still pressurized.
D Disconnect any operating lines providing air pressure, electric power, or a control signal to the actuator. Be sure the
actuator cannot suddenly open or close the valve.
D Use bypass valves or completely shut off the process to isolate the valve from process pressure. Relieve process pressure
on both sides of the valve.
D Relieve any supply or output pressure in the existing positioner.
D When installing an electro‐pneumatic positioner or converter in a hazardous area, turn off control signals until
installation is complete. Be sure all safety barriers, connections, and the converter housing cap and O‐ring are properly
installed before supply a control signal to the unit.
6
POSITIONER TO ACTUATOR MOUNTINGS
(1)
S1051, size 33
S1052, size 20, 33
S1061, size 80, 100
S1066, size 20, 27, and 75
S2052, size 1, 2, and 3
SNAMUR Mounting
Instruction Manual
Mounting Plate Required
D101728X012