FIELD: measurement technology; high-accuracy determination of liquefied gas mass in reservoir irrespective of its phase.
SUBSTANCE: three RF sensors of different length are placed in reservoir filled with liquefied gas. Sensors are connected to secondary converter. Length of first sensor vertically placed in reservoir corresponds to height of reservoir. Length of second vertical sensor is reduced from below by value no more than 0.35 of length of first sensor. Third sensor is located in gas phase of liquefied gas and its length is no more than 0.3 of length of first sensor. Each sensor may be connected to frequency-setting circuit of respective self-excited oscillator.
EFFECT: enhanced measurement accuracy; extended field of application.
2 cl, 3 dwg
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