Zero And Span Adjustments - Emerson Fisher 3610J Instruction Manual

3610J and 3620J Positioners
September 2017
a. Move the actuator to some position other than mid‐travel. This new position must be in the direction which
decreases the difference between OUTPUT A and OUTPUT B (the direction which reduces compression of the
actuator springs). The actuator or valve must not be contacting a stop, but must be somewhere between the up
and down stops. With the lower differential between the OUTPUT A and OUTPUT B pressures, adjusting the
crossover with neither the OUTPUT A pressure or OUTPUT B pressure equal to supply pressure should be
possible. If not, the supply pressure must be increased.
b. Increase supply pressure noting the limitations in the Supply Connection section and repeat the cross‐over
adjustment. The actuator or valve must not contact the stop, but must be somewhere between the up and down
stops. Increase supply pressure sufficiently, so that a crossover setting can be achieved with neither cylinder
output pressure equal to supply pressure.
6. Continue calibration by performing the zero and span adjustments.

Zero and Span Adjustments

1. Unscrew the four captive cover screws, and remove the cover (key 41, figure 28).
2. Use tables 8 through 11 and figure 15 to select the desired range spring and coarse span adjustment. (The tables
and figure 15 are only valid for the standard valve travel/range spring combinations shown.) Insert one end of the
range spring (key 150, figure 25) into the hole on the range spring hanger (key 130) as shown in figure 15. Insert the
other end of the range spring into the hole selected on the summing beam assembly (key 123, figure 15).
Table 8. Fisher 3610J and 3610JP Positioner Range Spring Selection and Coarse Span Adjustment
Valve
0.8 bar (12 psi)
Rotation
Range
(Degrees)
Spring Number
90 Blue
75 Yellow
60 Red
1. For positioners mounted on 1051, 1052, 1061 and 1069 actuators.
2. This table is only valid for the valve rotation and range spring combinations listed. Contact your
spring combination.
Table 9. Fisher 3611JP Positioner Range Spring Selection and Coarse Span Adjustment
0.8 bar (12 psi)
Valve Travel
mm (Inches)
Range
Spring
11 (0.4375) Blue
14 (0.5625) Blue
19 to 51
Blue
(0.75 to 2)
51 to 102
Blue
(3)
(2 to 4)
1. For positioners mounted on 585, 585R, 585C and 585CR actuators.
2. This table is only valid for the valve travel and range spring combinations listed. Contact your Emerson sales office for travels or input spans not shown for the valve travel/range spring
combination.
3. For 585 actuator, size 100 only
Table 10. Fisher 3620J and 3620JP Positioner Range Spring Selection and Coarse Span Adjustment
Valve Rotation
(Degrees)
Range Spring
90
75
60
1. For positioners mounted on 1051, 1052, 1061 and 1069 actuators.
2. This table is only valid for the valve rotation and range spring combinations listed. Contact your Emerson sales office for rotations or input spans not shown for the valve rotation/range
spring combination.
26
1.7 bar (24 psi)
Hole Range Hole
Spring Number
3 Blue 5
4 Red 4
3 Red 5
1.7 bar (24 psi)
Hole Range Hole
Number Spring Number
4 Red
4 Red
3 Yellow
3 Yellow
16 mA
Hole Number
Blue 3
Yellow 4
Red 3
(2)
Input Span
0.3 bar (4 psi)
Range Hole
Spring Number
Blue 1
Yellow 2
Red 1
Emerson sales office
(2)
Input Span
0.3 bar (4 psi)
Range Hole
Spring Number
5 Red 1
5 Red 1
5 Yellow 1
5 Yellow 1
Input Span
5.3 mA
Range Spring
Blue
Yellow
Red
Instruction Manual
0.4 bar (6 psi)
Range Hole
Spring Number
Blue 2
Yellow 3
Red 2
for rotations or input spans not shown for the valve rotation/range
(1)
0.4 bar (6 psi)
Range Hole
Spring Number
Red 2
Red 2
Yellow 2
Yellow 2
(2)
Hole Number Range Spring
1 Blue
2 Yellow
1 Red
D200149X012
(1)
0.6 bar (8 psi)
Range Hole
Spring Number
Blue 3
Yellow 3
Red 3
0.6 bar (8 psi)
Range Hole
Spring Number
Red 3
Red 2
Yellow 3
Yellow 3
(1)
8 mA
Hole Number
2
3
2