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

You can stop worrying when you use automatic ST-70AB liquid level control switch ST-70AB control water pump switch power than normal
control switch. Is safe and free short-circuits or burn – out problems.

ST70AB is use for control water inflow or outflow, this switch is suitable for both household and industrial  use, easy to install, low electricity consumption. safe and reasonably priced.

Features:

1. Double circuits: Such a switch has two circuits of A.B. The A terminal is used for water supply and the B terminal is used for pumping water.
2. High accurate: Solid float ball is immersed in water, the center of gravity is stable, which does not float on the water surface, and it has high accuracy.
3. Easy installations: Base is equipped with 3/4 inch and 1inch two-section screw-toothed conduits directly, with L-type bracket for flat mounting.
4. CONVENIENT TO USE: Meanwhile, the double float ball water level switch has excellent performance and is easy to use.
5. Durable: The switch is sealed by the housing, completely moisture-proof, and it maintains precise performance and extends switch life.
6. Voltage: 220V
7. Material: Plastic
8. Model no: ST-70AB
9. Cable: 1.2M

Packages Includes:

1 x 70AB Float Switch Water Level Controller

Flow measurement is the quantification of bulk fluid movement. Flow can be measured in a variety of ways. The common types of flowmeters with industrial applications are l Obstruction type (differential pressure or variable area), Inferential (turbine type), Electromagnetic, Fluid dynamic (vortex shedding), Anemometer, Ultrasonic, Mass flowmeter

Flow measurement methods other than positive-displacement flowmeters rely on forces produced by the flowing stream as it overcomes a known constriction, to indirectly calculate flow. Flow may be measured by measuring the velocity of fluid over a known area. For very large flows, tracer methods may be used to deduce the flow rate from the change in concentration of a dye or radioisotope.

Features:

1.  Rugged high-grade Noryl
2.  Minimum pressure drop
3.  Operates from a small head of water
4.  Mount in any axis
5.  Suitable for water and air flow switching

Specifications:

1. Max Switching Voltage VDC: 200
2. Max Switching Voltage VAC: 250
3. Max Switching Current Amps: 1
4. Max Switching Load Watt: 40
5. Housing Material: Brass
6. Shuttle Material: Noryl
7. Spring Material: Stainless Steel
8. Contact Material: Ruthenium
9. Operating Temperature: °C -30 to 85
10. Medium: Water
11. Housing Colour: Black
12. Vibration 35g up tp 500Hz
13. Maximum Pressure: 10 Bar @ 20ºC
14. Switch On Flow Rate L/min: 3.0

Package Includes:

1 x TE CONNECTIVITY Flow Switch FS-90/1

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

DFRobot Gravity: analog electrical conductivity sensor/meter(K=10) is particularly used to measure the high electrical conductivity liquid, such as seawater, concentrated brine, etc. The measurement range is up to 100ms/cm. This product is suitable for the water quality application of mariculture, for example, marine fisheries, marine aquariums. you may also check liquid sensor selection guide to get better familiar with our liquid sensor 
It supports 3~5v wide voltage input and is compatible with 5V and 3.3V main control boards, such as arduino and raspberry pi. The excitation source adopts an AC signal, which effectively reduces the polarization effect, improves the precision, and prolongs the life of the probe; The software library uses a single-point calibration method, and can automatically identify a standard buffer solution, so simple and convenient.

Features:

1. 3.0~5.0V wide voltage input，0~3.2V output voltage, which is compatible with 5V and 3.3V mainboard
2. AC excitation source effectively reduces polarization
3. Gravity connector and BNC connector, plug and play, no welding
4. The software library supports single-point calibration and automatically identifies standard buffer solutions, integrates temperature compensation algorithm
5. Uniform size and connector, convenient for the design of mechanical structures

Package Includes:

1 x Electrical Conductivity Probe（K=10, Laboratory Grade）

1 x Signal Conversion Board

4 x Standard Buffer Solution 12.88ms/cm

1 x Gravity Analog Sensor Cable

2 x Waterproof Gasket

1 x Screw Cap for BNC Connector

4 x M3 x 10 nylon pillar

Conductivity is the reciprocal of an object’s resistivity. It represents a material’s ability to pass a current. In a liquid, conductivity is a measure of a solution’s ability to conduct electricity and can reflect the amount of dissolved or salinity of a water source, so it’s an important parameter in water quality monitoring. DFRobot Gravity: Analog Electrical Conductivity Sensor PRO(K=1) is specially used to measure the conductivity in aqueous solutions, and then to evaluate the water quality. These conductivity sensors are often used in hydroponics, aquaculture, environmental water detection, and other fields.

As an upgraded version of the analog electrical conductivity meter, this pro version has greatly improved probe endurance, which can be used in 24/7 conductivity monitoring. Besides, the integrated PT1000 platinum resistance thermometer makes it easier to measure the compensated temperature data.

Features:

1. Easier to measure the compensated temperature data
2. Plug-and-play, no solder required
3. The output signal is filtered by hardware and has low jitter.

Package includes:

1 x Industrial Grade Analog Electrical Conductivity Sensor PRO (K=1)