1. Overview of ultrasonic level meter Ultrasonic level meter ( ultrasonic level meter ) is a digital level meter controlled by a microprocessor. In the measurement, the ultrasonic wave is emitted by the sensor (transducer), and the sound wave is reflected by the surface of the object and then received by the same sensor and converted into an electrical signal. The distance between the sensor and the object to be measured is calculated from the time between the emission and reception of the sound wave. Since the ultrasonic level gauge adopts a non-contact measurement method, the measured medium is almost unlimited, and it can be widely used to measure the height of various liquids and solid materials , and it can also be used for distance measurement. DY series ultrasonic level meter (ultrasonic level meter ) In addition to the on-site meter head intelligent liquid crystal display, it also outputs standard analog signals 4-20mA or upper and lower limit alarms (the latest type can choose RS232 and RS485 digital signal output)
     

2. Working principle of ultrasonic level gauge The ultrasonic sensor transmits and receives ultrasonic waves under the control of the microprocessor, and calculates the distance s between the ultrasonic sensor and the measured object by the propagation time t of the ultrasonic waves in the air, because the sound waves are in the air the propagation velocity c is constant, then according to: S = CT / 2 to calculate the S , and because of the ultrasonic sensor from the bottom of the container H is constant material, the analyte (liquid) h = Hs
     

3. Technical features Ultra-low price, high reliability, and high precision, which can completely replace the same imported ultrasonic level gauge. No need for professional technicians, it can be applied by setting one point, the instrument is easy to install on site, easy to adjust, and low maintenance. Ultrasonic level gauge ( ultrasonic level gauge ) has automatic power adjustment, gain control, temperature compensation, adopts advanced detection technology and calculation technology to improve the measurement accuracy of the instrument, and has the function of suppressing interference echo to ensure the authenticity of the measurement result . Adopt SMD technology to improve the reliability of the instrument. Automatic power adjustment, gain control, temperature compensation. Advanced detection technology . Abundant software functions adapt to various complex environments. It has the function of suppressing interference echo to ensure the authenticity of the measurement data. The sensor is made of tetrafluoroethylene, which can be used in various corrosive occasions. Using new waveform calculation technology to improve the measurement accuracy of the instrument. 16 -bit D/A conversion to improve the accuracy and resolution of current output. Multiple output forms : multi-point switch value, high-precision 4-20mA current output, RS-232 , 485 digital communication output.

4. Application field Ultrasonic level gauge ( ultrasonic level gauge ) is an advanced non-contact level measuring instrument, which can completely replace all kinds of original other forms of level gauges. It mainly measures liquids such as river water level, waste water level, canned level, mud, oil level, coal pile, ore, etc. It is widely used in sewage treatment, municipal administration, power plants, chemical plants, steel plants, pharmaceutical plants, wineries. The anticorrosive ultrasonic level gauge is used to measure various acid and salty corrosive liquids.