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Front of non-contact turbidity measurement sensor module with USB and microcontroller-DFRobot product sku:SEN0554 image.
Front of non-contact turbidity sensor module with USB connector and cables for optical measurement.
Overhead shot of non-contact turbidity measurement sensor with labeled optics components and dimensions.
Front of non-contact turbidity sensor with LED lights and display for real-time measurement
Angled shot of circuit board with connector and pins for non-contact turbidity measurement and UART optical sensor

UART Non-contact Optical Turbidity Sensor for Arduino

$9.90
SKU: SEN0554
Volume Discount
  • $9.70 3+ items
  • $9.50 5+ items
  • $9.20 10+ items
A non-contact turbidity sensor measures water quality using infrared probes to detect turbidity in containers, providing reliable, low-cost data via UART communication.
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IntroductionQuick Comparison of the Water Quality Turbidity SensorsFeaturesApplicationsSpecificationShipping List Documents FAQ

Introduction

This non-contact turbidity sensor detects water quality by measuring the level of turbidity. Based on the optics principle, it is capable of detecting the light transmittance and scattering rate of the liquid in transparent cylinder containers with a diameter of 40–50mm, which will then be output as an UART data frame within a certain range that reflects the level of liquid turbidity.

The turbidity sensor comes with two infrared probes, which should be oppositely installed on a container. And it detects when the liquid level inside is higher than the two probes. The sensor can measure without coming into contact with liquid, making it less susceptible to corrosion from water or chemicals.

Non-contact Optical Turbidity Sensor

Installation

Quick Comparison of the Water Quality Turbidity Sensors

Quick Comparison of the Water Quality Turbidity Sensors

Product Name
Gravity: Analog Turbidity Sensor for Arduino
UART Non-contact Optical Turbidity Sensor for Arduino
RS485 Industrial Water Quality Turbidity Sensor (0-1000 NTU)
Figure
image
image
image
SKU
SEN0189
SEN0554
SEN0710
Add to Cart
Principle
Light transmittance & scattering rate change
Infrared light transmittance & scattering (non-contact)
90° light scattering method
Method
Contact type, probe immersed in liquid
Non-contact, mounted on outer container wall
Contact type, probe immersed in liquid (IP68)
Output
Analog voltage 0–4.5V / Digital high-low level
UART-TTL (9600 bps)
RS485 (ModBus-RTU)
Range
Relative turbidity (no NTU value)
Relative turbidity (no NTU value)
0–1000 NTU (resolution 0.1 NTU)
Temp. Compensation
/
/
Built-in, 0–60℃ automatic compensation
Power Supply
5V DC
5V DC
10–30V DC
Waterproof Rating
Probe tip immersible, top not waterproof
Non-contact, no waterproof requirement
IP68 fully waterproof, can be submerged long-term
Response Time
<500ms
<1s
≤30s
Installation Requirements
Direct immersion, protect the top
Container diameter 40–50mm, transparent cylinder
Submersible; keep >5cm clearance around, 7cm obstacle-free below the probe
Typical Applications
Arduino education, simple experiments
Arduino education, corrosive liquids, non-contact required
Industrial wastewater, drinking water monitoring, environmental IoT

Features

  • No mechanically moving parts, high reliability
  • Small size & low cost

    • Applications

  • Water quality monitoring system

    • Specification

  • Supply Voltage: 5V
  • Communication Mode: UART-TTL
  • Applicable Cylinder Container Diameter: 40 to 50mm
  • Baud Rate: 9600
  • Operating Current: less than 10mA
  • Response Time: less than 1s
  • Operating Temperature: 5 to 60℃
  • Storage Temperature: 0 to 65℃
  • Service Life: 50000h
  • Light Source: Infrared Light (IR)
  • Wavelength: 950 nm
  • Color Interference: High
  • Probe material: Polycarbonate (PC)

    • Shipping List

  • Turbidity Sensor × 1
  • Gravity: 4Pin Sensor Adapter × 1

    • Documents

    FAQ

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    UART Non-contact Optical Turbidity Sensor for Arduino
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