As a non-contact liquid level measuring instrument,the ultrasonic liquid level gauge has the features such as high measuring accuracy,easy to install and maintenance-free as the measured medium is almost unlimited.Bebur ultrasonic liquid level gauge adopts an industrial-grade microprocessor,which is stable, reliable,rich in functions,and has a single-bus communication function.It can be used to set zero-scale and full-scale calibration,view and analyze the ultrasonic echoes.

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▶Typical Applications:

■Reservoir

■Sewage treatment plant

■ Waterworks

■Canals,channels,pools,lakes

▶ Performance Features:

■Constant measuring,maintenance-free

■Lightweight and easy to install

■Wide range of measuring media

Non-contact measurement,no fouling,no contamination of the medium

■Automatic temperature compensation

■Ultrasonic technology,anti-interference, accurate measurement,stable performance

▶Work Principle:

BUL-200 series controls the circuit of ultrasonic drive to send pulse excitation signal,drives the ultrasonic sensor to send ultrasonic wave,and the ultrasonic wave is received by the ultrasonic transducer after being reflected by the liquid level to be measured.Based on the time the sensor transmits and receives the ultrasonic waves,the height of the liquid level can be calculated.H-the distance from the ultrasonic sensor probe to the bottom of the liquid to be measured,S-the distance from the ultrasonic sensor to the liquid level,h -the height of the liquid level to be measured,v-the propagation speed ultrasonic waves in the air,andt-the time from transmission to reception of ultrasonic waves.Based on the above parameters. the following equation can be derived：

▶Sensor Parameters:

Model	BUL-200
Measuring Range	0~5m
Temperature Compensation	Automatic compensation
Resolution	3mm
Accuracy	1.0%FS
Display	LCD,menu in Chinese/English
Length of Sensor Cable	10m
Load Characteristic	≤750Ω
Output of Sensor Signal	4-20mA three-wire system,which can also be connected with PLC and DCS
Working Temperature	-25℃~+55℃
Power	220VAC or 24VDC
Relay	2 relays,spec.:250VAC/8A
Output of Controller Signal	4～20mA
Type of Signal Output	Current liquid level,low and high limit control
Way of Installation	Panel-mounted,wall-mounted,pipe-mounted

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Application industry

Environmental Protection Industry

We have developed and launched a series of water quality analyzers, flow meters, liquid level gauges, and gas detectors for applications in municipal drinking water, municipal sewage, industrial wastewater, spa pool disinfection, space disinfection, chemical plant gas leak emission detection, and other fields.

Energy

Food Manufacture & Processing

Chemical Engineering

Cases

Application of SCM530 Streaming Current Monitor in Water Treatment Plants

Application of BT8200 Liquid Particle Counter in Liquid Cooling Systems

Application of SCM520 Streaming Current Monitor in Municipal Water Treatment Plants

Application of SCM530 Streaming Current Detector in Water Plants under pH Fluctuation Conditions

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Ulrrasonic Level Gauge

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