抄録
Since movable tube flowmeters are based upon a measuring principle independent of Bernoulli's theorem, they enable us to measure flow rates regardless of viscosity losses. Both of the two types, of movable tube flowmeters, previously reported, however, need to determine two quantities, namely, “two pressure differences” or “a pressure difference and the external force acting on the tube”. For the new type flowmeter, here reported, two additional bellows are provided which enable us to cancel the terms involving pressure differences in the theoretical formula. It is, therefore, only necessary to determine one quantity and the measurement of flow rates is considerably simplified. The experiments showed good agreement with theory.
