ULTRASONIC FLOWMETER AND CALORIMETER

PURPOSE: An ultrasonic flowmeter and a calorimeter are provided to improve the accuracy of measuring a flow rate and calories even in a small conduit line by lengthening a propagation path as ultrasonic waves are reflected. CONSTITUTION: An ultrasonic flowmeter (100) includes a measuring tube (10), an ultrasonic wave measuring circuit, and a controller. The hollow measuring tube is fitted into a conduit line in which fluid flows through. The ultrasonic wave measuring circuit is composed of a first ultrasonic oscillator (21) and a second ultrasonic oscillator (22). The first ultrasonic oscillator is installed on a side of the measuring tube and transmits and receives ultrasonic waves. The second ultrasonic oscillator is installed to be separated from the first ultrasonic oscillator and transmits and receives ultrasonic waves in a space between the first and second ultrasonic oscillators. The controller is electrically connected to the first and second ultrasonic oscillators and measures a flow rate of the flow flowing through the conduit line by using the signals transmitted from the first and second ultrasonic oscillators.