Gravity Analog Turbidity Sensor

This Gravity turbidity sensor from DFRobot measures how cloudy water is. The probe evaluates how much light passes through the sample and how strongly it is scattered; with more suspended solids, turbidity increases. The board outputs either an analog signal of 0 V to 4.5 V or a digital switching signal with adjustable threshold. The sensor shows relative turbidity, not an NTU value.

Important: Only the lower part of the probe may go into the water, the top of the probe is not waterproof.

Note: The connection cable can be converted to male pins with a Dupont cable M-M, so that it also fits an Arduino UNO.

Recommended Accessories:

• Dupont Cables M-M 10cm 20 Pieces
• Gravity 16Bit 4-Channel ADC Analog Digital Converter I2C ADS1115

Features:

• Analog or digital output, D/A switch on the board
• Switching threshold of the digital output adjustable with the potentiometer
• The analog value decreases with higher turbidity
• Response time below 500 ms
• Gravity 3-pin connector

Application Examples:

• Comparing water samples
• Observing water quality in streams, ponds and waste water
• Experiments on suspended solids and sediments in class
• Simple turbidity indicator with switching threshold

Documentation:

• Wiki DFRobot SEN0189

Technical Data:

• Manufacturer: DFRobot
• Manufacturer SKU: SEN0189
• Operating voltage: 5 V DC
• Operating current: max. 40 mA
• Response time: < 500 ms
• Insulation resistance: min. 100 MΩ
• Analog output: 0 V to 4.5 V
• Digital output: HIGH/LOW, threshold adjustable with the potentiometer
• Operating temperature: 5 °C to 90 °C
• Storage temperature: -10 °C to 90 °C
• Adapter board dimensions: 38 × 28 × 10 mm
• Weight: 30 g

Scope of Delivery:

• 1× turbidity sensor adapter board
• 1× turbidity probe
• 1× probe cable
• 1× Gravity analog cable 3-pin