Patent ID: 9696195
Date: 2017-07-04
CPC Classifications: G01F

Claim:
1. An ultrasonic flow switch to output an on/off signal based on a flow rate of a fluid flow in a pipe, the ultrasonic flow switch comprising: a first ultrasonic element configured to transmit an ultrasonic wave to a fluid flow in a pipe; a second ultrasonic element configured to receive the ultrasonic wave from the fluid flow in the pipe; a fixture detachably fixing the first and second ultrasonic elements to an outer surface of the pipe integrally or separately; a reception interface configured to receive input information regarding at least one of the pipe and the fluid; a calculation part configured to calculate the flow rate of the fluid in the pipe, based on an output signal of at least one of the first and second ultrasonic elements, and the input information received by the reception interface; and an output part configured to output the on/off signal, based on the flow rate calculated by the calculation part, and a preset flow rate threshold value, wherein the reception interface receives only an outer diameter of the pipe, only a thickness of the pipe, or both the outer diameter and the thickness of the pipe as the input information regarding the at least one of the pipe and the fluid in a first setting mode.