Honeywell HON 5020 User And Maintenance Manual page 43

6.2 Adjusting the amplifying valve
Control behavior changes
achieved by adjusting the
amplifying valve
Adjusting the amplifying
valve
HON 5020 gas pressure regulator with HON 640a / HON 642a pilot
The following changes in the gas pressure regulator's control behavior can be achieved by
adjusting the amplifying valve on the pilot:
 If the gas pressure regulator exhibits a sluggish response to changes in the manipulated
variable, the response times can be shortened.
 If the gas pressure regulator's dynamic response to changes in the manipulated variable
is too fast and this results in oscillations, the gas pressure regulator's response can be
slowed down.
If you want to speed up the actuator assembly's response, follow the steps below:
Figure
If you want to slow down the actuator assembly's response, e.g., in the case that there are
oscillations, follow the steps below:
Figure
Adjusting the settings of the device
Step Description
1 Unscrew the spacer nut a bit.
2 Use a flat-blade screwdriver to screw the
spindle (1) in turn by turn while monitoring
the actuator assembly's control behavior.
As soon as you achieve the actuator
assembly response you want, stop chang-
ing the spindle's position.
3 Tighten the spacer nut.
Step Description
1 Unscrew the spacer nut a bit.
2 Use a flat-blade screwdriver to unscrew
the spindle (1) out turn by turn while
monitoring the actuator assembly's control
behavior. As soon as you achieve the
actuator assembly response you want,
stop changing the spindle's position.
3 Tighten the spacer nut.
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