Emerson Fisher KC Series Instruction Manual page 79

Instruction Manual
Form 5207
April 2007
PIVOT
ASSEMBLY A
36A9751-C
B1668-4 / IL
15. At either end of link 5, there are four holes in
which the link may be connected. A coarse span
adjustment can be made by moving both ends of link
5 up or down.
a. If the span is short (process pointer indication
is less than the process scale upper limit),
disconnect both ends of link 5, move the link
down one set of holes, and return to step 6.
b. If the span is long (process pointer indication
is greater than the process scale upper limit),
disconnect both ends of link 5, move the link up
one set of holes, and return to step 6.
16. Apply process pressure equal to the mid-scale
value of the process scale span. The process
pointer should indicate mid-scale ±2 percent of the
scale span. If the process pointer error is ±2 percent
or less, proceed to step 17. If the process pointer
error exceeds ±2 percent, the linearity can be
4195KA, KB, KC, and KS Controllers
GUIDE
FLEXURE MOUNTING
SCREW
TIE BAR
REMOTE SET POINT ZERO ADJUSTMENT SCREW
ZERO ADJUSTMENT LOCKING SCREW
FRONT VIEW
Figure 6-23. Remote Set Point (suffix letter M) Parts and Adjustment Locations
ADJUSTMENT
LINK A
SCREW
LINK B
LINEARITY
ADJUSTMENT
PIVOT
ASSEMBLY B
MOUNTING
SCREW
CAPSULES
improved with the linearity adjustment. See figure
6-22 for the linearity adjustment screw location.
a. If the error at mid-scale is high (process
pointer is to the right side of the mid-scale mark),
loosen the linearity adjustment screw and slide it
upward in the curved slot. Tighten the screw and
return to step 6.
b. If the error at mid-scale is low (process
pointer is to the left side of the mid-scale mark),
loosen the linearity adjustment screw and slide it
downward in the curved slot. Tighten the screw
and return to step 6.
17. Adjust the process pointer to within ±1 percent
of the mid-scale mark by loosening the zero
adjustment locking screw and adjusting the zero
adjustment screw. Tighten the zero adjustment
locking screw. This distributes the error over the
entire process scale and keeps all points within ±1
percent of the process scale span.
DRIVE FLEXURE
LOWER TRAVEL
STOP
UPPER TRAVEL
STOP
SIDE VIEW
6-35