| 摘要 |
PCT No. PCT/GB96/01283 Sec. 371 Date Dec. 2, 1997 Sec. 102(e) Date Dec. 2, 1997 PCT Filed May 31, 1996 PCT Pub. No. WO96/38723 PCT Pub. Date Dec. 5, 1996A method for measuring the dew point temperature of a moist gas in which a flow of moist gas (A) is passed over a surface (2); a moisture sensor (5) is positioned in the flow of gas downstream of the surface (2); cooling is applied to the surface; the moisture content (M) of the gas downstream of the surface (2) is monitored; and the temperature of the surface (2) is measured, the temperature which is measured being controlled by the detection of a decrease in moisture content due to moisture condensation from the moist gas at the dew point temperature (TD). An apparatus for carrying out the method is also described. The surface (2) may be a layer of heat-conducting material in contact with a heat pump (3) or the surface may be part of the wall of a coiled tube (40).
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