Calibration Of Valve Positioner Or Valve Stem Position Transmitter; Beam Alignment - Emerson Fisher 3582i Instruction Manual

Instruction Manual
D200138X012
1. Unhook the spring (key 38), and remove the cam bolt (key 6), cam (key 4), and spring retainer bracket (key 43).
2. Screw the locking nut (key 45) all the way onto the cam bolt.
Note
If the arrow stamped on the cam points toward the nozzle, output pressure increases with downward stem movement. If the
arrow points down away from the nozzle, output pressure decreases with downward stem movement.
3. Reverse the cam (key 4) from its original position. Attach the cam and spring retainer bracket with the cam bolt.
Tighten the cam bolt to secure the cam. Then tighten the locking nut against the spring retainer bracket.
4. Hook the spring into the spring retainer bracket.
5. After reversing the cam, perform the calibration procedures in the calibration of valve positioners and transmitters
section.
Calibration Of Valve Positioner Or Valve Stem Position
Transmitter
The following beam alignment and calibration procedures are applicable for both 3582 and 3582i valve positioners
and 3583 valve stem position transmitters.
WARNING
During calibration the valve may move. To avoid personal injury or property damage caused by the release of pressure or
process fluid, provide some temporary means of control for the process.

Beam Alignment

Note
The beam is leveled at the factory prior to shipment. Once the beam is leveled, no additional leveling should be required unless the
beam pivot pin or the bellows assembly pivot pin are changed, the bellows assembly or range spring are replaced, or the valve
positioner is changed to split range operation.
The purpose of beam alignment is to ensure the correct mechanical position of parts so the valve positioner can be
calibrated. Provide the appropriate supply pressure. Also, provide an input signal to the positioner which can be
manually set at the midpoint of the desired input signal range.
Refer to figure 15 for parts locations. Refer to figure 21 for key number locations unless otherwise indicated. Position
the flapper assembly by hand to different settings on the beam assembly or by using a screwdriver in the slot of the
flapper setting adjustment.
3582, 582i, and 3583
January 2013
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