Capacitance manometer differential pressure sensor
AssigneeHoneywell Inc.
InventorsRichard C. Mott, Thomas A. Stamm
Life of this patent
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Abstract
A transducer for providing an output signal having a value determined by an input pressure differential includes a capacitance manometer having a first input for receiving a first input pressure and a second input for receiving a second input pressure, the capacitance manometer having a capacitance determined by the difference between the first and second input pressures, and an output circuit connected to the capacitance manometer for providing an output signal having a value dependent upon the capacitance.
Claims7
A transducer for providing an output signal having a value determined by an input pressure differential comprising:
- capacitance manometer means having a first input for receiving a first input pressure and a second input for receiving a second input pressure, said capacitance manometer means having a capacitance determined by the difference between said first and second input pressures, said capacitance manometer means having an outer electrode and an inner electrode, and a reservoir of dielectric fluid, said inner electrode located within said outer electrode and said inner and outer electrodes and said dielectric fluid reservoir all being concentric with one another such that the differential pressure between the first and second input pressures determines the level of dielectric fluid between said inner and outer electrodes;
- and,
- output means connected to said capacitance manometer means for providing an output signal having a value dependent upon said capacitance.
a transducer for providing an output signal having a value determined by an input pressure comprising:
- capacitance manometer means having input means for receiving a pressure input signal, said capacitance manometer means having a capacitance dependent upon said pressure input signal, said capacitance manometer means having an outer electrode and an inner electrode, and a reservoir of dielectric fluid, said inner electrode being located within said outer electrode and said inner and outer electrodes and said dielectric fluid reservoir all being concentric to one another, said pressure input signal controlling the level of dielectric fluid between said inner and outer electrodes;
- and,
- output means responsive to said capacitance manometer means for providing an output signal having a value dependent upon said capacitance.
Dependencies are inferred from the claim text.