室内圧計測用擬似恒圧空気溜の試作

Abstract

Using an ordinary pressure transducer of difference pressure type and a thermos bottle, anabsolute pressure in a room was detected with aid of the thermal data simaltenously recorded.The difference of outputs from two apparatuses which had the same pressure sensibility and thedifferent thermal characteristics was utilized to obtain the indicial responses of temperature re-gardless of the variation of barometric pressure. Under a cold front with strong winds whosemaximum speed was 17.5 m/sec an indoor pressure was measured in a laboratry hall 54x12x12m3 by one of the apparatuses. The absolute pressure record amended with thermal data fittedwell on the readings of a mercury barometer, but was poorly correlated to the dynamic pressureover the roof top.