Dual function pressure transducer

Details Dual function pressure transducer Dual function pressure transducer

1975-04-14

1976-05-18

Woodiel, Donald O.

Measuring and testing

Gas analysis

Moisture content or vapor pressure

73406, 338 42, 338200, G01L 902

Patent

active

039569209

ABSTRACT:
A dual function pressure transducer capable of providing an instantaneous pressure reading, and also of indicating when a sensed pressure crosses a predetermined selectable threshold level. A mechanical pressure sensing device causes an electrical contact member to wipe against a resistance element in response to changes in the sensed pressure, the element and contact being connected in a first electric circuit that provides a pressure readout determined by the location of the contact along the element. The contact is carried by a switch-arm that cooperates with an adjustable switch-pole means to switch a second circuit between first and second modes when the contact crosses a particular point along its path, the location of which is determined by the switch-pole setting.

REFERENCES:
patent: 2437473 (1948-03-01), Ogden et al.
patent: 3144531 (1964-08-01), Cosby

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