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Heated pressure transducer assembly

  • US 5,932,332 A
  • Filed: 05/27/1997
  • Issued: 08/03/1999
  • Est. Priority Date: 01/16/1996
  • Status: Expired due to Term
First Claim
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1. A thermal insulator, disposed between a thermal shell and an external enclosure of a heated pressure transducer assembly, wherein the external enclosure remains substantially at ambient temperature independent of the temperature of the thermal shell over normal operating temperatures of the heated pressure sensor assembly of up to about 150°

  • C., the thermal insulator comprising;

    (A) a plurality of metalized high temperature films stacked one on top of another, wherein the high temperature films have a thickness of not more than about 0.001 inches and do not shrink or melt at the normal operating temperatures of the heated pressure sensor assembly;

    (B) a plurality of thermal convection and conduction control means for trapping air and for providing a thermal conductivity lower than that of silicone rubber, each of said thermal convection and conduction control means having a thermal conductivity of less than about 0.07 W/m °

    C. and being disposed between adjacent ones of said metalized high temperature films, wherein the overall thickness of one thermal convection and control means disposed between two metalized high temperature layers is on the order of about 12 thousandths of an inch or less.

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