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

3582, 582i, and 3583
BEAM
PIVOT PIN
BEAM PIVOT
LOCKNUT
SECTION A‐A
NOZZLE
BEAM
23A0308-B
A6133 / IL
Figure 15. Partial View for Beam Leveling and Calibration
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.
24
BELLOWS ASSEMBLY
LOCKNUT
BELLOWS
ASSEMBLY
PIVOT PIN
FLAPPER SETTING
ADJUSTMENT
FLAPPER
ASSEMBLY
FLAPPER ASSEMBLY
SCREW
Note
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

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
20 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.
To level the beam, proceed as follows:
In the following steps, if the required
rotary shaft arm position cannot be
attained when adjusting a pivot point,
adjust one of the other pivot points
slightly. Then, repeat the original pivot
adjustment. Continue this process
until the required arm position can be
attained.
1. Stroke the actuator to its mid-travel position with
a handwheel or a manual loader. Refer to figure 4
and 6. Lift the rotary shaft arm (key 2) so that the
Instruction Manual
June 2010
Note
Note