Ultrasonic Level Sensor

Industrial ultrasonic level transmitter uses a non-contact ultrasonic level sensor, continuous level measurement ultrasonic sensor of liquids and materials. With built in technology to compensate temperature. It has anti-interference intelligent identification and error correction function. No moving parts. They are widely used in all kinds of atmospheric storage tanks and water areas. Pokcenser ultrasonic level sensors have different models for small-range, mid-range and long-range applications, explosion proof, IP67 or IP68, including water and waste water, chemical processing, food and beverage, pulp and paper processing, sump and process tanks.

Sales contact

Pokcenser Automation Technology Co., Ltd

Mobile: +86 181 7515 5326

Email: info@pokcenser.com

Tel: +86-731-8229 9492

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PWL-U80 Underwater Ultrasonic Distance Sensor

Features

50m, 100m, 200m, 300m measuring range
Applicable to the seawater and freshwater
Housing material: ABS, SUS304, SUS316
IP68 water-proof

PWL-U80 Underwater Ultrasonic Distance Sensor

Applications

Water level warning in the reservoir dam
Water depth measure with unmanned surface vessel
Seawater depth measure with buoys
Inland waterway depth surveying
Erosion detection for offshore wind turbine foundations and bridge pier
High mud content water depth

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Advantages

Anti-corrosion and durable
Temperature compensation and error correction functions, automatically adapting to changes in the medium.
High accuracy 2cm±0.5%D, repeatability accuracy ±0.25%
No frequent calibration required; electromagnetic interference resistant design
Metal snap-locking structure resists water flow impact/ship vibration, preventing detachment

The underwater ultrasonic distance sensor is also called underwater obstacle avoidance sensor, is a water depth meter with RS485 output. Measurement is completed within 1 second using the principle of ultrasonic reflection. The circuit is integrated into the probe, thus directly get RS485 Modbus output without extra controller for the compact, higher waterproof and more stable signal transmission.

Resources

Datasheet

File Name	Time	Type	Download
PWL-U80 Underwater Ultrasonic Distance Sensor	Nov 20, 2025	PDF

Technical Parameters

Transducer frequency	300KHz-----200KHz-----200KHz-----88KHz
Measurement range	50m--------100m--------200m--------300m
Blind area	0.5m--------0.7m--------0.85m-------1.0m
Transmission angle	5.7°±0.6°--8.7°±0.9°--8.7°±0.9°--16.5°±1.7°
Operating voltage	10.8～26.4VDC
Output	RS485 Modbus RTU
On-site accuracy	2cm±0.5%D (D refers to the measured depth)
Operating temperature	-20～+60℃
Cable length	5 meters
Protection level	IP68 at a depth of 100 meters
Housing material	ABS(only for 50m, 100, 200m), SUS304, SUS316

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