Need to measure water quality and other parameters but haven’t got any low-cost pH meter? Find it difficult to use with Arduino? DFRobot analog pH meter, specially designed for Arduino controllers and has a convenient and practical “Gravity” connector and a bunch of features. Instant connection to your probe your Arduino to get pH measurements at ± 0.1pH (25 ℃). For most hobbyists, this great accuracy range and its low cost make this a great tool for biorobotics and other projects! It has an LED that works as the Power Indicator, a BNC connector, and a PH2.0 sensor interface. To use it, just connect the pH sensor with the BND connector, and plug the PH2.0 interface into the analog input port of any Arduino controller. If pre-programmed, you will get the pH value easily. Comes in a compact plastic box with foams for better mobile storage.

Build your own PH meter gadget or a water monitoring station for your water tanks. This and our other water sensor devices could make for the ultimate water control device. Use it for your aquaponics or fish tanks or other materials that need measurements.

Applications:

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

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

This contactless capacitive  Externally attachable Liquid Level Sensor can use to detect liquid levels without dipping/touching the liquid. you just need to stick the sensor to the external body of the tank where you need the alert.

Features:

1. The miniature design allows for installation in areas where space is limited.
2. They are solid state, with no moving parts, unlike mechanical switches where debris can get jammed and cause unreliability.
3. Cost-effective.
4. A wide variety of power output is available, allowing the sensor to switch lower power equipment directly, eliminating the need for costly interfaces
5. Easy to install, saving assembly time.
6. Very robust which permits use in a wide range of fluids.
7. Housings, cabling, and connectors are made to your requirements

Package Includes:

1 x 24V Capacitive Contactless Externally Liquid Level 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:

Features:

1. Power supply: +5V
2. Working current: 25μA
3. Working temperature: -25~125℃
4. Detectable wall thickness: 1~3mm
5. Dimension(mm ± 1): 16.5 x 8.5 x 5.5 (Not include the cushion on the sensor)
6. Cable length: 30cm ± 1cm

Packages Includes:

1 x DFRobot Gravity: Capacitive Non-contact Liquid Level Sensor (3mm TR)