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14. Perform the controller calibration procedures and,
if necessary, the appropriate remote set point calibra-
tion procedure in section 3 or 4.
Replacing Capsular Element Controller Link 5
1. Remove the two screws (key 6), and lift off the pro-
portional band indicator cover (key 36).
2. Note the location of the connection holes and dis-
connect both ends of link 5 (key 88) from the lever
arms of the two pivot assemblies. Refer to figure 5–22
for parts locations.
3. Loosen the adjustment screw on the replacement
link and adjust the length to match the original link.
Tighten the adjustment screw.
4. Attach the replacement link to the two lever arms in
the same holes noted in step 2.
5. Move the set point indicator, either manually or with
remote set point pressure, to the mid-scale mark on
the process scale and set the proportional band be-
tween DIRECT and REVERSE.
6. The process pointer should be aligned with the
pointer subassembly as shown in figure 5–15. If not,
loosen the zero adjustment locking screw and adjust
the process pointer zero adjustment to align the pro-
cess pointer and pointer subassembly. Tighten the
zero adjustment locking screw.
7. Apply process pressure equal to the mid-scale val-
ue of the process scale span. The process pointer
should indicate the mid-scale 3 percent of the scale
span. If not, loosen the screw in link 1 or link 5, and
move the process pointer to the mid-scale mark of the
process scale span. Tighten the screw.
8. Perform the controller calibration procedures and, if
necessary, the appropriate remote set point calibration
procedure in section 3 or 4.
Capsular Element Controller Maintenance
Calibration
Precalibration Procedure
1. Remove the two machine screws (key 6) and lift off
the proportional band indicator cover (key 36).
2. Set the proportional band adjustment between DI-
RECT and REVERSE.
3. Remove the two screws (key 103) and remove the
tie bar (key 97) from the capsular element assembly.
Aligning the Drive Bracket Assembly
Refer to figures 5–22 and 5–28.
1. With an Allen wrench, Loosen the set screw in the
hex nut of the drive bracket assembly (key 84).
4195KA, KB, and KC Series
DIAPHRAGM
ASSEMBLY
EXTENSION
GUIDE
FLEXURE
A
LONG
PIVOT
SHORT
PIVOT
58A0708-E
A6946 / IL
Figure 5–22. Process Input Capsular Element Assembly Part
and Adjustment Locations (Positive and Compound Pressure
Element Shown)
2. Loosen the screw (key 98) that holds the guide
flexure to the tab on the mounting plate (key 77). The
guide flexure location is shown in figure 5–22.
3. Apply process pressure equal to 75 percent of the
capsular element range.
4. Slide the drive bracket assembly (key 84) along the
diaphragm capsule extension (key 82) until the guide
flexure is aligned with the center of the long pivot cle-
vis assembly (key 78).
TRAVEL
STOP
NUT
DRIVE
BRACKET
TRAVEL
STOP
NUT
DRIVE
FLEXURE
TRAVEL
STOP
A
LINK 5
LINK 1
LINEARITY
ADJUSTMENT
5–27
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