Azbil Corporation
20
Model
KFPA
,
KFTA
- Field Mount type Pressure Indicating Controllers
5: Calibration and adjustment
5-1: Deviation generating mechanism
By following the procedure mentioned below, accurately align the ends of the
measuring pointer and the set point pointer.
(1) Either by disconnecting the link from the receiving unit or by setting measuring
input for about 50%, make the measuring pointer indicate approximately 50%
point on the scale.
(2) Set the set point pointer at approximately 50% scale position with the setting knob
in the case of the local type or with an external set point signal in the case of the
cascade type.
(3) Insert the adjusting pin through the adjusting pin hole.
(4) If there is a gap difference between the ends of the set point pointer and the
measuring pointer, eliminate the difference by turning the set point pointer
adjusting screw.
If the motion is not smooth, temporarily loosen the clamping screw for adjustment.
Then, tighten the screw firmly.
Connect a pressure gauge to the OUT connection port, and a supply air 140 kPa
{1.4 kgf/cm²} to the SUP connection port.
Figure 21
5
1020
50
100
100
50
20
105
Index
Flapper
adjusting
pin
Dial
stopper
Control
mechanism
Feedback
link
Feedback link
adjusting pin
Setting pointer
(green)
Measuring pointer
(red)
Mounting
screw
Link length
adjusting
screw
Differential link
SP setting knob
Deviation
generating
mechanism
Link to
receiving
unit
Travel link
(PV)
Setting pointer
adjusting screw
Adjusting
pin hole
for link
length
SP space
