Description
HON 512 with HON 650 pilot user manual
21
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The position of the diaphragm unit, in turn, will depend on the pressure conditions in-
side the body chambers upstream and downstream of the diaphragm unit.
In the body chamber downstream of the diaphragm unit, a motorization pressure is
built up with the pilot, with this pressure acting as a force component on the dia-
phragm unit
In the body chamber upstream of the diaphragm unit, the force of the compression
spring(s) and the force of the gas pressure there both act on the diaphragm unit.
In order for the actuator assembly to be opened or kept open, the force exerted by the
motorization pressure must be greater than the forces opposing it.
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The visual position indicator and the optional electrical displacement transducer can be
used to read the device’s degree of opening.
Summary of Contents for HON 512
Page 185: ...Appendix HON 512 with HON 650 pilot user manual 185 X Fail to open version Y Amplifying valve ...
Page 205: ...Appendix HON 512 with HON 650 pilot user manual 205 ...
Page 206: ...Appendix HON 512 with HON 650 pilot user manual 206 ...
Page 207: ...Appendix HON 512 with HON 650 pilot user manual 207 ...
