Patent ID: 9027414
Filing Date: 2015-05-12
Classification: G01F

Abstract:
1. An ultrasonic flow rate measurement device comprising: a flow volume measurement block through which a fluid to be measured flows; a pair of ultrasonic transducers that are disposed in the flow volume measurement block and configured to transmit ultrasonic waves from one of the pair of ultrasonic transducers and receive the ultrasonic waves by the other of the pair of ultrasonic transducers; a propagation time measurement block configured to measure a propagation time of the ultrasonic waves exchanged between the pair of ultrasonic transducers; an oscillation circuit block used as a reference clock by the propagation time measurement block configured to measure a propagation time, wherein the oscillation circuit block includes an oscillator a flow volume computing block configured to calculate a flow volume from a value measured by the propagation time measurement block; and a temperature sensing block configured to sense a temperature by measuring a frequency of the oscillator.