Ultrasonic liquid level gauge is a kind of liquid level instrument that uses the ultrasonic principle to measure liquid level. How does the ultrasonic liquid level gauge work? What is the principle of ultrasonic level gauge?
The working principle of ultrasonic liquid level gauge is to transmit energy wave through ⼀ devices that can transmit energy wave (⼀ generally pulse signal). The energy wave is reflected by obstacles, and the reflected signal is received by ⼀ receiving devices.
The change of liquid (material) level is determined according to the time difference of measuring the movement process of energy wave. The microwave signal is processed by the electric device and finally transformed into the electrical signal related to the liquid level.
The secondary probe transmits ultrasonic pulse signal to the measured medium meter. The ultrasonic wave is reflected after encountering the measured medium (obstacle) during transmission, and the reflected ultrasonic signal is detected by the electric module.
Through special software to process, analyze the time difference between transmitting ultrasonic wave and echo. Combined with the propagation speed of ultrasonic wave, the propagation distance of ultrasonic wave can be accurately calculated, and the inlet can reflect the situation of liquid level.
Features of ultrasonic level gauge
Multi pulse low-voltage multi-point transmitting circuit, double balance noise suppression multi-point receiving circuit (qf-9000 Series): improve the reliability of the instrument, solve the problem of inaccurate measurement of uneven material level, and strengthen the anti-interference energy. It can stably make dynamic power adjustment, gain control and temperature compensation near the transmitting tower of the substation.
Advanced detection technology and rich software functions adapt to various complex environments.
Adopt new waveform calculation technology to improve the measurement accuracy of the instrument.
It has the function of suppressing disturbing echo to ensure the authenticity of measured data.
16 bit D / a conversion to improve the accuracy and resolution of current output.
The sensor is made of Teflon, which can be used in various corrosive occasions.
Various output forms: programmable relay output, high precision 4-20mA current output, RS-485 digital communication output, split ultrasonic liquid level probe
Post time: 25-01-22