Need help?Do you have a question about the GE Masoneilan 4700P and is the answer not in the manual?
General| Type | Pneumatic Valve Positioner |
|---|---|
| Accuracy | ±1% of span |
| Enclosure Rating | NEMA 4X, IP66 |
| Input Signal | 3-15 psi (0.2-1.0 bar) |
| Temperature Range | -40°C to 85°C |
| Action | Direct or Reverse |
| Hysteresis | < 0.5% of span |
| Materials | Aluminum, stainless steel, and other corrosion-resistant materials |
Documentation safety symbols and their meanings.
Intended use and safety considerations for the positioners.
Overview of positioner function, principle, and numbering system.
Description of the three-way sliding valve regulating air flow.
Role of the cam in determining valve stroke vs. control signal relationship.
Guidelines for installing positioners on valves in the pipeline.
Procedure for removing the snap-on cover for access.
Step-by-step instructions for mounting positioners on 87/88 actuators.
Step-by-step instructions for mounting positioners on 87U/88U actuators.
Specific mounting details for various valve models.
Approval details for explosion proof, dust-ignition proof, and intrinsically safe.
Approval details for CSA certified versions.
Approval details for SIRA certified versions.
Instructions for positioning the cam coupling on the shaft.
Positioning the cam holder and cam for proper lobe adjustment.
Procedure to change the orientation of the lever S/A.
Ensuring valves are isolated and area is nonhazardous before calibration.
Adjusting the zero nut to set the valve plug to the proper position.
Adjusting the feedback spring rate for full valve stroke.
Procedure to change the cam lobe only, without changing actuator action.
Calibration steps for Air to Open / Direct Acting Positioner.
Calibration steps for Air to Open / Reverse Acting Positioner.
Calibration steps for rotary actuators, Air to Open / Direct Acting.
Calibration steps for reciprocating valves, Air to Open / Direct Acting.
Procedures for cleaning or replacing the pilot subassembly.
Procedures for disassembling and cleaning the positioner body.
Procedure for replacing a deteriorated diaphragm assembly.
Procedure for replacing the I/P module.
Technical data including type, action, characteristics, and consumption.
To Next Page
