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为监测氡气,美国矿山局,装制了一台四种参数的测量仪,以便精确地确定矿井空气的相对湿度、温度、气压和风速。这种新仪器装在手提箱里,外形尺寸为17×20×8英寸,净重不超过15磅测量矿井空气的相对湿度用H—5型湿度计。这个组件有一个S型曲线的非线性输出,并可使之线性化,以便在计数器上的湿度读数可达到±3％的精度。测量温度采用Rdf公司21701—121铂电阻探头和放射仪表4001—100信号调节组
To monitor radon, the U.S. Bureau of Mines assembles a four-parameter gauge to accurately determine the relative humidity, temperature, pressure and wind speed of mine air. The new instrument, housed in a suitcase, measures 17 x 20 x 8 inches and weighs less than 15 pounds. Measure the relative humidity of the mine air using a H-5 hygrometer. This module has a non-linear S-curve output that can be linearized so humidity readings on the counter can achieve ± 3% accuracy. Measurement of temperature using Rdf 21701-121 platinum resistance probe and the radiation meter 4001-100 signal conditioning group