The Arduino turbidity sensor detects water quality by measuring the level of turbidity. It is able to detect suspended particles in water by measuring the light transmittance and scattering rate which changes with the amount of total suspended solids (TSS) in water. As the TTS increases, the liquid turbidity level increases

This Arduino turbidity sensor has both analog and digital signal output modes. You can select the mode according to the MCU as the threshold is adjustable in digital signal mode.

Turbidity sensors can be used in the measurement of water quality in rivers and streams, wastewater and effluent measurements, sediment transport research, and laboratory measurements

Connection Diagram:

Useful link:

Interfacing of DFRobot Gravity Analog Turbidity Sensor For Arduino

Package Includes:

1. 1 x Turbidity sensor adapter
2. 1 x Turbidity sensor probe
3. 1 x Turbidity sensor cable
4. 1 x Gravity analog sensor cable

This small 5V non-contact liquid level sensor with Gravity Interface is able to detect 0-100°C conductive liquid levels in non-metallic containers in sensing range of 3mm. Provided with digital quantity output(low), the sensor can be directly used on Arduino UNO for liquid level detection of the water tank, beverage machine, water pipe, scientific experiment test tube, etc.

With IP67 protection level, the module employs an integrated seamless shell and fully enclosed waterproof glue encapsulation process to block the intrusion of dust and protect internal electric components. Besides, the sensor cable, with great electrical conductivity, is flexible, durable, waterproof, and oil-proof.

Features:

Specifications:

DFRobot Gravity: analog electrical conductivity meter V2 is specially used to measure the electrical conductivity of an aqueous solution, and then to evaluate the water quality, which is often used in water culture, aquaculture, environmental water detection, and other fields. This meter product, as an upgraded version of the electrical conductivity meter V1, greatly improves the user experience and data precision. It supports 3~5v wide voltage input, and is compatible with 5V and 3.3V main control board; The output signal filtered by hardware has low jitters; The excitation source adopts AC signal, which effectively reduces the polarization effect, improves the precision, and prolongs the life of the probe; The software library uses two-point calibration method, and can automatically identify standard buffer solution, so simple and convenient.

Features:

1. 3.0~5.0V wide voltage input
2. Hardware filtered output signal, low jitter
3. AC excitation source effectively reduces polarization
4. Gravity connector and BNC connector, plug and play, no welding
5. Software library supports two-point calibration and automatically identifies standard buffer solution, integrates temperature compensation algorithm
6. Uniform size and connector, convenient for the design of mechanical structures

Package Includes:

1 x DFRobot Gravity Lab Grade Analog Electrical Conductivity Sensor

This is a sensor that detects chlorine concentration and supports three output modes: analog, I2C, and UART. The probe has been calibrated at the factory, which can quickly and accurately measure the concentration of chlorine in the environment. Can be widely used in the detection of chlorine in the chemical, pharmaceutical production, and environmental protection fields.

The probe adopts the electrochemical principle, has the characteristics of strong anti-interference ability, high stability, high sensitivity, etc., and the service life is as long as two years. The sensor has 32 modifiable I2C addresses, an integrated temperature compensation algorithm, and a threshold alarm function, It has good compatibility with mainstream main control devices such as Arduino, esp32, and raspberry pi. The easy-to-use Gravity interface, coupled with our sample code, can quickly build a chlorine concentration detector.

Applications:

Features:

1. Strong anti-interference ability
2. High stability
3. High sensitivity
4. Light weight
5. Easy to use
6. plug & play

Package Includes:

Cable Float Switch is a control device for automatic On/Off pumps, motor and magnetic valves. It is also an alarm device at certain pre-determined surface levels. It is suitable for use in non-flammable liquids at 250 volts. In potentially explosive atmospheres (e.g. oil tanks) the Switch can be used in conjunction with (Ex) I-isolator switch units. Due to its large float casing, the float Switch has a buoyancy that guarantees smooth, trouble-free operation under all conditions. The switch has a double chamber and a final remolding finish to make it absolutely hermetic.

Features: 

1. It can test the pressure of the liquid.
2. The float switch is a switch that regulates fluid level in the tank or well etc
3. The float switch is resistant to water(sewage water) it is relatively capable of being used for oil, most acids and alkalis
4. The float switch is not explosion-proof.

Package Includes:

1 x Square 15M Float Switch For Industry Pump Tank Sensor

Grove – ORP Sensor Kit (HR-O) aims to measure the cleanliness of the water and its ability to break down contaminants. It works with a 5 meters IP68 ORP probe, offering a -2000mV to 2000mV sensing range, operating under 0-80℃ which is a member of the simple-to-use Grove ecosystem and supports Arduino programming. The sensor is environmentally friendly and RoHS certificated.

An ORP Sensor measures the activity of oxidizers and reducers in an aqueous solution, it measures the ability of a lake or river to cleanse itself or break down waste products. Different oxidation-reduction processes and conditions have different ORP values(mV), with aerobic conditions having higher ORP values and anaerobic conditions having lower ORP values. In common conditions like spas, it is widely acknowledged that the safe values are between 650 mV and 750 mV.

For more anaerobic and aerobic environments detection, you will find this sensor amazed that it offers an even wider range measurement and the value of which is from -2000 mV to +2000 mV. It also provides ±15mV sensing accuracy when it operates at 0-60°C.

With such performance, its assembly, operation, and value-read are pretty simple. Being a member of the Grove ecosystem and supported by Arduino, you can easily connect it to any Arduino-support board with a Grove cable and simply read the output ORP value.

Note

If you find white solid granular crystals around the probe shroud after receiving the product, this is normal and please do not worry. It is caused by temperature change, environmental change or redox during the process of delivery. However, it will not affect the nature of the internal potassium chloride solution and the normal operation of the sensor.

If you find it, please use a wet paper towel to gently wipe off the crystals on it, please do not let it near your children to avoid accidental ingestion.

Applications:

1. Monitor and control oxidation-reduction reactions
2. Disinfected water detection
3. Health-friendly water detection
4. Determine the types of microbial
5. Dectct anaerobic microbial activity
6. Wastewater treatment
7. Aquaculture
8. Industrial sewage discharge monitoring
9. Monitor and control oxidation-reduction reactions
10. Disinfected water detection
11. Health-friendly water detection
12. Determine the types of microbial
13. Dectct anaerobic microbial activity
14. Wastewater treatment
15. Aquaculture
16. Industrial sewage discharge monitoring

Features:

1. Grove ORP Sensor Upgrade: Assemble 5-meters IP68 ORP probe, offering -2000 mV to 2000 mV sensing range, operating under 0-80℃, member of simple-to-use Grove ecosystem
2. Enhanced Measurement Performance: Maintain ±15mV sensing accuracy at 0-60°C
3. Working Voltage: Support both 3.3V and 5V working conditions
4. Exchangeable Sensor Nodes: Support BNC-linker sensor probes
5. RoHS Certification: Environmentally friendly, assured detection

Specifications:

1. Range measurement: -2000mV to +2000mV
2. Resolution ratio: 1 mV
3. Accuracy: ±15mV
4. Aero potential point(pH): 7.00±0.30
5. Slope factor: >96%
6. Work voltage: 3.3V/5V
7. Work temperature: 0-80℃
8. Liquid junction boundary: Polyvinyl tetrachloride
9. Material of the housing: PPS
10. Membrane resistance: <500 MQ
11. Wire length: 5 meters
12. Method of installation: Drop
13. Level of protection: Ip68
14. Electrical connection: BNC

Packages Includes:

1 x Seeed Studio Grove ORP Sensor Kit Pro (HR-O) – IP68