Pneumatic pressure transmitter responsive to temperature and hum

Details Pneumatic pressure transmitter responsive to temperature and hum Pneumatic pressure transmitter responsive to temperature and hum

1977-04-25

1978-05-30

Wayner, William E.

Automatic temperature and humidity regulation

Humidity control

73336, 236 87, 200 6106, G05D 2200

Patent

active

040919927

ABSTRACT:
A force-balance transmitter for producing a pressure signal proportional to the enthalpy of air has a flapper associated with a nozzle and employs a control force acting on the flapper in opposition to a feedback force applied to the flapper by the controlled fluid pressure acting over the area of the nozzle, the control force being produced by the combination of forces exerted on the flapper by two resilient beams subjected to individual bending moments responsive to sensed temperature and sensed humidity respectively.

REFERENCES:
patent: 3970246 (1976-07-01), Attridge, Jr. et al.
patent: 3999706 (1976-12-01), Lewis

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