US PATENT SUBCLASS 165 / 293
.~.~.~ Temperature sensor prior to heat exchanger and one after

Current as of: June, 1999
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165 /   HD   HEAT EXCHANGE

200  DF  WITH TIMER, PROGRAMMER, TIME DELAY, OR CONDITION RESPONSIVE CONTROL {14}
287  DF  .~ Temperature responsive or control {5}
288  DF  .~.~ Plural temperature sensors {6}
293.~.~.~ Temperature sensor prior to heat exchanger and one after

DEFINITION

Classification: 165/293

Temperature sensor prior to heat exchanger and one after:

(under subclass 288) Subject matter wherein the heat transfer apparatus comprises a heat exchanger having a fluid flowing through it and wherein one temperature sensing means is located upstream of the heat exchanger and another temperature sensing means is located downstream of the heat exchanger.