Separate Monitor And Attached Monitor Ultrasonic Level Sensor For Water / Oil / Liquid and Solid Measure

Separate Monitor And Attached Monitor Ultrasonic Level Sensor For Water / Oil / Liquid and Solid Measure

Introduction

Ultrasonic sensors are sensors that convert ultrasonic signals into other energy signals (usually electrical signals). Ultrasonic wave is a mechanical wave whose vibration frequency is higher than 20kHz. It has the characteristics of high frequency, short wavelength, small diffraction phenomenon, especially good directivity, can become a ray and directional propagation. Ultrasonic waves can penetrate liquids and solids very well, especially in solids that are opaque to sunlight. The ultrasonic wave will produce significant reflection when it encounters impurities or boundary surface and form reflection echo. It can produce Doppler effect when it encounters moving objects.

Principle

The ultrasonic distance sensor transmits the ultrasonic pulse to the measured object, and then returns the echo formed by the measured object to the receiving sensor, so as to obtain the time difference between the transmitting and receiving, and then the distance between the transducer and the measured medium surface can be obtained according to the sound speed in the medium. So we can calculate the distance between the transducer and the reflector of the medium D=C*t/2, divided by 2 because the ultrasonic wave travels twice the distance between the transducer and the medium when it is transmitted and received. (D is distance, C is speed of sound, and t is time).

Features

Non-contact measurement

Short response time

With display

Various output optional: switch, analog, or RS485

Level value output or distance output

Parameters