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Temperature measuring apparatus

  • US 4,630,939 A
  • Filed: 11/15/1985
  • Issued: 12/23/1986
  • Est. Priority Date: 11/15/1985
  • Status: Expired due to Term
First Claim
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1. An apparatus for measuring the temperature of a fluid environment within a vessel, said apparatus comprising:

  • (a) a chamber means that is sealingly connected to and which opens into said vessel to form a chamber which contains a portion of said fluid environment;

    (b) a temperature sensing means which is movable between a first and a second position, whereby at said first position,(i) at least a portion of said temperature sensing means is within said chamber, and(ii) said temperature sensing means is out of contact with the remainder of said fluid environment, and whereby at said second position,(iii) at least a portion of said temperature sensing means is exterior of said chamber and is in contact with said remainder of said fluid environment so as to obtain said temperature measurement;

    (c) means for preventing substantial convective movement between said portion of said fluid environment and said remainder of said fluid environment when said temperature sensing means is moving between and at said first and second positions; and

    (d) means for maintaining said portion of said fluid environment in said chamber at a cooler temperature than the temperature of said remainder of said fluid environment.

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