Ultrasonic Liquid Level Sensor(50mm-20000mm)

SKU: SEN0356

This ultrasonic liquid level sensor enables non-contact measurement of liquids in closed containers using ultrasonic detection technology. It is suitable for detecting corrosive, toxic, or high-temperature liquids without direct contact. The sensor features a measuring range of 50 mm–2000 mm, 1 mm resolution, and about 1 s response time, providing stable real-time liquid level output. With built-in temperature compensation and UART communication, it supports DC 3.3V–12V power input and is compatible with controller boards such as Arduino and Raspberry Pi. Its compact integrated probe design allows easy installation and supports containers made of metal, plastic, glass, and other materials, making it suitable for applications such as petrochemical processing, water treatment, and environmental monitoring.

Overhead shot of a small industrial ultrasonic level sensor with cable and label.-DFRobot product sku:SEN0356 image.
  • Docs
  • Tech Specs
  • Specification

    Parameter Value
    Operating Voltage DC 3.3V – 12V
    Average Current < 35 mA
    Blind Zone ≤ 50 mm
    Measuring Range 50 mm – 2000 mm
    Resolution 1 mm
    Accuracy (at 25°C) ±(5 + S × 0.5%) mm
    Operating Cycle 1 s
    Response Time (with liquid) 1 s
    Response Time (without liquid) 10 s
    Output Interface UART
    Probe Center Frequency 2 MHz
    ESD Protection ±4 kV / ±8 kV
    Operating Temperature -15 °C – 60 °C
    Storage Temperature -25 °C – 80 °C
    Compatible Container Materials Metal, Plastic, Glass, etc.
    Dimensions Ø27.7 mm ±0.5 mm × 17 mm ±1 mm
    Cable Length 450 mm ±10 mm

    Pin Out

    Board Overview

    Pin Color Pin Name Description
    Red VCC 3.3~12V Power
    Black GND Ground
    Yellow TX UART Output
    White RX Empty

    Was this article helpful?

    TOP