Capacitive pressure transducer with improved electrode support

A pressure transducer assembly comprising:

• (A) a body defining an interior cavity;
• (B) a diaphragm mounted in said body and dividing said interior cavity into a first chamber and a second chamber, a portion of said diaphragm flexing in a first direction in response to a pressure in said first chamber being higher than a pressure in said second chamber, said portion of said diaphragm flexing in a second direction opposite said first direction in response to said pressure in said second chamber being higher than said pressure in said first chamber;
• (C) a plate fixed to said body in said first chamber, said plate comprising a first material;
• (D) an insulator disposed in said first chamber, said insulator comprising a second material different from said first material;
• (E) a fastener fixing a central portion of said insulator to said plate;
• (F) a conductor disposed on said insulator, said conductor and said diaphragm being characterized by a capacitance, said capacitance being representative of a difference between said pressures in said first and second chambers.

A pressure transducer assembly comprising:

• (A) a body defining an interior cavity;
• (B) a diaphragm mounted in said body and dividing said interior cavity into a first chamber and a second chamber, a portion of said diaphragm flexing in a first direction in response to a pressure in said first chamber being higher than a pressure in said second chamber, said portion of said diaphragm flexing in a second direction opposite said first direction in response to said pressure in said second chamber being higher than said pressure in said first chamber;
• (C) a plate fixed to said body in said first chamber;
• (D) an insulator disposed in said first chamber;
• (E) a spacer disposed between said plate and said insulator;
• (F) a fastener fixing a central portion of said insulator and said spacer to said plate;
• (G) a conductor disposed on said insulator, said conductor and said diaphragm being characterized by a capacitance, said capacitance being representative of a difference between said pressures in said first and second chambers.

A pressure transducer assembly comprising:

• (A) a metallic body defining an interior cavity;
• (B) a diaphragm mounted in said body and dividing said interior cavity into a first chamber and a second chamber, a portion of said diaphragm flexing in a first direction in response to a pressure in said first chamber being higher than a pressure in said second chamber, said portion of said diaphragm flexing in a second direction opposite said first direction in response to said pressure in said second chamber being higher than said pressure in said first chamber;
• (C) a metallic member fixed to at least a portion of said metallic body in said first chamber;
• (D) an insulator disposed in said first chamber, said insulator being fixed to said metallic member;
• (E) a conductor disposed on said insulator, said conductor and said diaphragm being characterized by a capacitance, said capacitance being representative of a difference between said pressures in said first and second chambers.

A pressure transducer assembly comprising:

• (A) a body defining an interior cavity;
• (B) a diaphragm mounted in said body and dividing said interior cavity into a first chamber and a second chamber, a portion of said diaphragm flexing in a first direction in response to a pressure in said first chamber being higher than a pressure in said second chamber, said portion of said diaphragm flexing in a second direction opposite said first direction in response to said pressure in said second chamber being higher than said pressure in said first chamber;
• (C) a conductor disposed in one of said first and second chambers, said conductor and said diaphragm being characterized by a capacitance, said capacitance being representative of a difference between said pressures in said first and second chambers;
• (D) a resilient element disposed in said one chamber, said resilient element providing a force that biases said conductor away from said diaphragm.

A pressure transducer assembly comprising:

• (A) a body defining an interior cavity;
• (B) a diaphragm mounted in said body and dividing said interior cavity into a first chamber and a second chamber, a portion of said diaphragm flexing in a first direction in response to a pressure in said first chamber being higher than a pressure in said second chamber, said portion of said diaphragm flexing in a second direction opposite said first direction in response to said pressure in said second chamber being higher than said pressure in said first chamber;
• (C) a metallic plate fixed to said body in said first chamber;
• (D) an insulator disposed in said first chamber, said insulator being fixed to said plate;
• (E) a conductor disposed on said insulator, said conductor and said diaphragm being characterized by a capacitance, said capacitance being representative of a difference between said pressures in said first and second chambers.

A pressure transducer assembly comprising:

• (A) a body defining an interior cavity;
• (B) a diaphragm mounted in said body and dividing said interior cavity into a first chamber and a second chamber, a portion of said diaphragm flexing in a first direction in response to a pressure in said first chamber being higher than a pressure in said second chamber, said portion of said diaphragm flexing in a second direction opposite said first direction in response to said pressure in said second chamber being higher than said pressure in said first chamber;
• (C) a plate welded to said body in said first chamber;
• (D) an insulator disposed in said first chamber, said insulator being fixed to said plate;
• (E) a conductor disposed on said insulator, said conductor and said diaphragm being characterized by a capacitance, said capacitance being representative of a difference between said pressures in said first and second chambers.

A pressure transducer assembly comprising:

• (A) a body defining an interior cavity;
• (B) a diaphragm mounted in said body and dividing said interior cavity into a first chamber and a second chamber, a portion of said diaphragm flexing in a first direction in response to a pressure in said first chamber being higher than a pressure in said second chamber, said portion of said diaphragm flexing in a second direction opposite said first direction in response to said pressure in said second chamber being higher than said pressure in said first chamber;
• (C) a plate fixed to said body in said first chamber, said plate comprising a first material;
• (D) an insulator disposed in said first chamber, said insulator being fixed to said plate, said insulator comprising a second material different from said first material;
• (E) a conductor disposed on said insulator, said conductor and said diaphragm being characterized by a capacitance, said capacitance being representative of a difference between said pressures in said first and second chambers.