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-U201 Small Range Ultrasonic Level Transmitter

Features

Less than 0.06m~0.15m minimum blind area
1m, 2m, 3m measuring range
High accuracy ±1mm, ±1.5mm

PWL-U201 Small Range Ultrasonic Level Transmitter

Applications

Liquid level measure
Beverage level monitoring
Chemical tanks
Soap bins
Solid level measurement

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Advantages

Digital filtering and echo recognition functions
Support custom sound speed (special material measurement)
Internal built-in auto compensation for temperature
High stability for measurement in harsh environment

This ±1mm and ±1.5mm high accuracy ultrasonic level sensor with extreme small blind spot of less than 0.06~0.15m, is a compact liquid level sensor for small tanks. It is an integration of ultrasonic sensor, temperature sensor, pressure sensor, ultrasonic servo circuit and transmitter circuit. All these features realize a concise and compact ultrasonic level sensor for solids as well.

Resources

Datasheet

File Name	Time	Type	Download
PWL-U201 Small Range Ultrasonic Level Transmitter	Nov 20, 2025	PDF

Technical Parameters

Model	PWL-U201
Measuring Range	1m, 2m, 3m
Blind Zone	<0.03~0.15m (according to range)
Emission Angle	<3~6° (according to sensor and environment)
Accuracy	±1mm, ±1.5mm (according to the range)
Resolution	1mm
Temperature Compensation	Automatic temperature compensation
Indicator	OLED
Signal Output	Analog: 4-20mA, 0-20mA, 0-5V, 0-10V Digital: RS485-Modbus RTU/TCP, HART Switch: 3 channels of NPN Wireless: NB-IoT, LoRa, 4G
Power Supply	12~28VDC, 18~32VDC(2 wires)
Installation Method	M30*1.5, Clamp
Electrical Interface	M20*1.5-2
Material of Housing	Cast aluminum and SUS304
Working Temperature Range	-20~65℃, -0.07~0.1MPa
Working Humility	≤80%RH, no condensation
Protection Level	IP65( other can be customized)
Explosion Proof	ExiaII CT4Ga, Ex db mb IICT6 Gb
Dimension	Φ70mm x 116mm x M30

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