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Thermal management in a pressure transmitter

  • US 6,510,740 B1
  • Filed: 09/21/2000
  • Issued: 01/28/2003
  • Est. Priority Date: 09/28/1999
  • Status: Expired due to Term
First Claim
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1. A miniaturized pressure transmitter, comprising:

  • at least first and second thermal islands in a single housing that thermally separate a pressure sensor in the first thermal island from a heat generating electronic circuit included in the second thermal island;

    wherein the first thermal island includes a fluid inlet, a pressure sensor configured to receive a pressure from the fluid inlet, and a temperature sensor sensing the temperature of the pressure sensor; and

    wherein the second thermal island includes an electrical connector with an outer shell and a feedthrough with contacts, and a primary heat load device that is thermally coupled to the outer shell, the contacts configured to connect the transmitter to an external current loop circuit and to carry a transmitter output current, and a portion of the transmitter output current is conducted by the primary heat load device.

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