This is a YFS301 7-24V Water Flow Sensor Flowmeter 0.3-10L/Min.YFS301 hall effect water flow sensor is a light, nimble outline, small size, and easy to install. All materials are in line with SGS testing standards.  There is an integrated hall effect sensor that outputs an electrical pulse with every revolution. The hall effect sensor is sealed from the water pipe and allows the sensor to stay safe and dry.  Stable, high temperature, low water pressure start. Three wires connection: Red for positive, black for negative, yellow for pulse signal.

Application:

Water heater, washing machine, boiler, electromagnetic water heater, water dispenser, water purifier, R.O. machine, U.F. machine, coffee machine, water machine, water machine control, water control machine, beer machine, beauty equipment, shower equipment, electrolytic water machine, energy engineering, heat pump, IC meter, steam equipment, irrigation equipment, water system, campus card self-service sale (sell) water machine, washing machine, automatic washing equipment, water treatment equipment, water dispensing equipment, cooling system, circulation system, intelligent toilet (toilet), bidet, mechanical equipment, heating equipment,  Pharmaceutical (agents) equipment, etc.

Note:

1. When magnetic material is close to the sensor, its characteristics may vary.
2. In order to avoid particle debris, the sensor must be installed after a filter.
3. The flow sensor can be installed in any direction. it has to avoid a strong vibrating and shaking environment, so as not to affect the accuracy.

Features:

1. Lightweight, Small in size, easy to install.
2. With stainless steel axis in the wheel, abrasion-resistant.
3. Sealing ring design to prevent water leaks.
4. Compliant with RoHS standard.
5. Wide range of applications.

Package Includes:

1 x YFS301 7-24V Water Flow Sensor Flowmeter 0.3-10L/Min

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 Gravity: Liquid Flow Sensor is designed based on the electromagnetic principle. It adopts O-ring rubber seal and uses silicone sealant at the outlet end to ensure good waterproofness. Also, it embraces high anti-electromagnetic interference and anti-vibration capabilities, offering reliable performance and long service life. The sensor can be used with microcontrollers like ARDUINO UNO to measure the flow of liquids with high concentration and low viscosity like water, diesel, engine oil, milk, paint, detergent, honey, etc. (no impurity in liquid)

Use this flow sensor to measure the rate of the flow of liquids. The sensor has a digital interface which makes it simple and easy to connect it to a microcontroller, Arduino, or Raspberry Pi. It requires no extra circuit to start measuring liquid flow rate. The sensor will have to be attached in the liquid line whose flow is to be measured. A pinwheel inside the sensor moves as the liquid flows through the sensor.

Features:

1. Gravity interface, easy to wire
2. Wide voltage of 3.5~24V
3. Measure the flow of the high-concentration but low-viscosity liquid
4. RoHS compliant

Specifications:

1. Operating Voltage: DC 3.5~24V
2. Operating Current: ≤10mA (DC5V)
3. Output Mode: NPN pulse signal
4. Pipe Diameter: G1/2
5. Thread I.D.: 10mm
6. Thread O.D.: 20.5mm
7. Thread Length: 29mm
8. Water Pressure Resistance: ≤1.2MPA
9. Insulation Resistance: >100MΩ
10. Flow Range: 30-1200L/H
11. Error: ±1% (5-600L/H)
12. Output Pulse High Level: >DC4.7V (input voltage DC5V)
13. Output Pulse Low Level: ＜DC0.5V (input voltage DC5V)
14. Output Pulse Duty Ratio: 50%±10%
15. Flow & Pulse Correlation: 1L=150 pulses
16. Operating Temperature: ≤80°C
17. Operating Humidity: 35%~90%RH (No condensing)
18. Storage Temperature: -25°~+80°C
19. Storage Humidity: 25%~95%RH

Package Includes:

1 x DFRobot Gravity Liquid Flow Sensor (G1/2)

This is a non-contact liquid level sensor with status indicator and adjustable sensitivity. It can be used in liquid detection of non-metallic container or pipe(outer diameter>11mm), suitable for all types of detection of curved or flat surfaces, arcs, cylindrical containers or piping fluids. The status feedback of the sensor can be given in real-time. Besides that, the sensor comes with a 4pin sensor adaptor that can directly collect digital signal, convenient for connecting with Arduino or other main-controllers. This liquid level sensor can be widely used in liquid detection of a tank, water dispenser, etc.

Features:

1. High stability and sensitivity
2. Adjustable sensitivity
3. With status indicator
4. Can be used in liquid detection of non-metallic container or pipe(outer diameter>11MM), non-contact detection, and will not be affected by corrosive liquids like strong acid and alkali, or other impurities
5. Accurate detection can detect the liquid level of boiling water
6. Pure electronic circuit structure, non-mechanical structure, stable performance, and long working life
7. High sensitivity and strong anti-interference ability, not affected by external electromagnetic interference, special treatment for power frequency interference, and common mode interference.
8. Strong compatibility, penetrate all kinds of non-metallic container pipes, such as plastic, glass, ceramic, and other containers. The thickness of pipe the sensor can detect reaches up to 20mm;
9. Suitable for all types of detection of curved or flat surfaces, arcs, cylindrical containers or piping fluids
10. 5~12V wide voltage range, suitable for various circuits or applications.

Specification;

1. Power Supply: 5~12V
2. Output: switch quantity
3. Response Time: 500ms
4. Operating Temperature: -5~105°C
5. Suitable Container Outer Diameter: ≥11mm
6. Liquid Level Error: ±1.5mm
7. Material: ABS
8. Waterproof Performance: IP65

Packages Includes

1 x DFRobot Non-contact Capacitive Liquid Level Sensor for Container ODgreater than 11mm

DFRobot Gravity: Analog pH meter V2 is specifically designed to measure the pH of the solution and reflect the acidity or alkalinity. DFRobot ph sensor is commonly used in various applications such as aquaponics, aquaculture, and environmental water testing.
As an upgraded version of ph meter v1 , this product greatly improves the precision and user experience. The onboard voltage regulator chip supports the wide voltage supply of 3.3~5.5V, which is compatible with the 5V and 3.3V main control boards. The output signal filtered by hardware has low jitter. The software library adopts the two-point calibration method, and can automatically identify two standard buffer solutions (4.0 and 7.0), so simple and convenient. you may also check liquid sensor selection guide With this product, the main control board (such as Arduino, and the software library, you can quickly build the pH meter, plug, and play, with no welding.

Features:

1. 3.3-5.5V wide voltage input
2. Hardware filtered output signal, low jitter
3. Gravity connector and BNC connector, plug and play, no welding
4. The software library supports two-point calibration and automatically identifies standard buffer solution
5. Uniform size and connector, convenient for the design of mechanical structures

Package Include:

1 x DFRobot Gravity Lab Grade Analog pH Sensor/Meter Kit V2

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