Cell for converting differential pressure into an electric signal
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United States of America Patent
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-
Jan 16, 2001
Issued Date -
N/A
app pub date -
Mar 29, 1999
filing date -
Oct 8, 1997
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A cell for converting a differential pressure into an electric signal, which comprises two chambers and a sensor. The two chambers are filled with an incompressible fluid and each are closed by a respective membrane suitable for deforming under the action of an external pressure. The chambers are separated from each other by a rigid wall. The sensor associated with the wall and responsive to the pressure difference exerted across the wall, delivers an electric signal in response thereto. At least one passage is formed between the two chambers and possesses appropriate dimensions firstly for at least attenuating a parasitic pressure difference existing across the wall at a frequency that is low or zero, and secondly for allowing the sensor to detect the pressure difference exerted across the wall at higher frequencies.
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