DFRobot
Gravity: Analog Turbidity Sensor For Arduino
The Gravity Analog Turbidity Sensor measures water clarity by detecting the level of suspended particles. It works by measuring light transmittance and scatt...
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The Gravity Analog Turbidity Sensor measures water clarity by detecting the level of suspended particles. It works by measuring light transmittance and scattering rate, which change with the amount of total suspended solids (TSS) in the water.
The sensor provides both analogue (0–4.5V) and digital (high/low) output modes. In digital mode, the threshold is adjustable via an onboard potentiometer. Compatible with Arduino and other microcontrollers via the Gravity interface.
Key Features
- Dual Output Mode – Analogue (0–4.5V) and digital (adjustable threshold)
- Fast Response – Less than 500ms response time
- Gravity Interface – Plug-and-play with Arduino
- Wide Temperature Range – Operating from 5°C to 90°C
Specifications
- Operating Voltage – 5V DC
- Operating Current – 40mA max
- Response Time – <500ms
- Analogue Output – 0–4.5V
- Digital Output – High/low with adjustable threshold
- Insulation Resistance – 100M min
- Operating Temperature – 5°C to 90°C
- Storage Temperature – -10°C to 90°C
- Adapter Dimensions – 38 × 28 × 10mm
- Weight – 30g
Ideal For
- Water quality monitoring in rivers and streams
- Wastewater and effluent measurement
- Sediment transport research
- Laboratory turbidity measurements
Package Contents
- 1× Turbidity sensor adapter board
- 1× Turbidity sensor probe
- 1× Turbidity sensor cable
- 1× Gravity analogue sensor cable
Resources
Jargon buster
Plain-language definitions for the technical terms used above.
- DC
- DC means direct current, where electricity flows in one constant direction, as supplied by batteries, USB ports and many plug-pack power supplies. When a product specifies DC, it runs from a DC supply rather than mains AC, so you need to provide the correct voltage and polarity.
- Gravity
- Gravity is DFRobot’s plug-in connector system for sensors, motors and modules, using standard cables to reduce loose jumper wiring. It matters because Gravity-compatible parts can connect directly to these ports, while non-Gravity parts may need adapters or manual wiring.
- potentiometer
- A variable resistor usually turned with a knob or shaft to create an adjustable electrical signal. It is often used for inputs such as volume, brightness or position, so it helps beginners learn how a microcontroller reads changing values.
- Transmittance
- Transmittance is the fraction of light that passes through a material or layer rather than being absorbed or reflected, usually given as a percentage. A higher transmittance means more light gets through, which can produce a brighter or clearer result for the same light source.
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Related Tutorials
Free guides on learn.littlebird.com.au
