Abstract: A measurement apparatus 1 disposed with respect to a container 105 containing a liquid L. The measurement apparatus 1 includes output detectors fixed to the container 105 that output ultrasonic waves that propagate in the liquid L in the container 105 and detect the ultrasonic waves propagated in the liquid L. The measurement apparatus 1 also includes a controller 50 that measures a state of the liquid L in the container 105 based on the ultrasonic waves detected by the output detectors.

Abstract: A multiphase flowmeter includes a first flow quantity measurer configured to transmit and receive a first measurement signal, the first flow quantity measurer being disposed on an outside wall of a vertical pipe line, a second flow quantity measurer configured to transmit and receive a second measurement signal, the second flow quantity measurer being disposed on an outside wall of a horizontal pipe line which is connected to the vertical pipeline, and a flow quantity parameter calculator configured to receive the first measurement signal from the first flow quantity measurer and the second measurement signal from the second flow quantity measurer, the flow quantity parameter calculating a flow quantity parameter in accordance with the first measurement signal and the second measurement signal.

Abstract: A multiphase flowmeter includes a first flow quantity measurer configured to transmit and receive a first measurement signal, the first flow quantity measurer being disposed on an outside wall of a vertical pipe line, a second flow quantity measurer configured to transmit and receive a second measurement signal, the second flow quantity measurer being disposed on an outside wall of a horizontal pipe line which is connected to the vertical pipeline, and a flow quantity parameter calculator configured to receive the first measurement signal from the first flow quantity measurer and the second measurement signal from the second flow quantity measurer, the flow quantity parameter calculating a flow quantity parameter in accordance with the first measurement signal and the second measurement signal.

Abstract: An ultrasonic measuring device that measures a flow volume of a fluid by sending an ultrasonic signal to the fluid and receiving a transmission signal or a reflection signal of the ultrasonic signal obtained from the fluid, may include: a first computing unit that performs a calculation to a first receive signal obtained by receiving the transmission signal, and determines a first flow volume indicating the flow volume of the fluid; a second computing unit that performs a correlation calculation of a second receive signal obtained by receiving the reflection signal, and determines a second flow volume indicating the flow volume of the fluid; a storage unit; and a correcting unit that outputs one of the first flow volume and the second flow volume based on a volume of air-bubbles contained in the fluid.