PRESSURE CONTROL DEVICE

A pressure responsive control device having a pressure housing assembly (12) defining a pressure chamber (24), an actuable controller (14) fixed to the housing assembly and pressure transducer (16) hermetically closing the pressure chamber (24). The transducer (16) includes plural duplicate snap act...

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Bibliographic Details
Main Author CHOLKERI, PANDU R
Format Patent
LanguageEnglish
Published 28.06.1989
Edition4
Subjects
BASIC ELECTRIC ELEMENTS
ELECTRIC SWITCHES
ELECTRICITY
EMERGENCY PROTECTIVE DEVICES
MEASURING
MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER,MECHANICAL EFFICIENCY, OR FLUID PRESSURE
PHYSICS
RELAYS
SELECTORS
TESTING
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Summary:A pressure responsive control device having a pressure housing assembly (12) defining a pressure chamber (24), an actuable controller (14) fixed to the housing assembly and pressure transducer (16) hermetically closing the pressure chamber (24). The transducer (16) includes plural duplicate snap acting pressure responsive diaphragms (60a, 60b, 60c), a diaphragm control plate (62) hermetically bonded to the diaphragms and a support member (64) hermetically joined between the control plate (62) and the housing assembly (12). The diaphragms each are formed from thin sheets of spring metal and includes a central dome section (68) having a surface finish less than 6 microinches A.A. on both sides. The diaphragms are nested together so that confronting faces of the dished sections are engaged when the diaphragms flex.
Bibliography:Application Number: EP19860109742