目前在工业生产过程中,重量流量的测量结果往往受到介质的压力、温度、粘度、密度、成份以及相变等因素变动的影响。利用建立在柏努利方程中能量守恒原理,并采用测定分流后的两个差压而构成的分流差压式流量计,可使其输出值免受上述诸因素的影响。这就从根本上提高了测量的精度。此流量计的基本原理在1977年日本全国应用物理学会上曾作 At present, in the process of industrial production, the measurement of weight flow is often affected by the change of media pressure, temperature, viscosity, density, composition and phase change. By using the principle of conservation of energy based on the Bernoulli equation and by using a split differential pressure flowmeter that measures two differential pressures after shunting, the output value is protected from the above-mentioned factors. This fundamentally improves the measurement accuracy. The basic principle of this flowmeter in 1977 Japan National Institute of Applied Physics had made