This is a 24-bit high precision barometric pressure sensor, which allows accurate altitude tracing, as well as barometric pressure / temperature measuring. It supports both I2C and SPI interfaces, also is compatible with 3.3V/5V voltage levels.

Due to its ultra small form factor, low power consumption, low noise and high precision, the BMP388 Barometric Pressure Sensor is suited for applications such as drones, accurate altimeter, environment monitoring, and IoT projects, and so on.

Features: 

1. Supports I2C (default) / SPI interface
2. Onboard voltage level translator, compatible with 3.3V/5V operating voltage
3. Comes with development resources and manual (examples for Raspberry Pi/Arduino/STM32)

Package Includes:

1 x BMP388 Barometric Pressure Sensor
1 x PH2.0 5PIN wire

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

Gravity: Analog pH Sensor / Meter Pro Kit For Arduino is a professional Arduino pH Sensor Meter Kit with an industrial electrode. The industrial ph sensor for Arduino has a built-in simple, convenient, practical connection and long life (up to 1 year), which makes it very suitable for long-term online monitoring. It has an LED that works as the Power Indicator, a BNC connector, and a PH2.0 sensor interface.

This industrial pH electrode is made of a sensitive glass membrane with low impedance. It can be used in a variety of PH measurements with fast response and excellent thermal stability. It has good reproducibility, is difficult to hydrolysis, and can eliminate basic alkali errors. In 0pH to 14pH range, the output voltage is linear. The reference system which consists of the Ag/AgCl gel electrolyte salt bridge has a stable half-cell potential and excellent anti-pollution performance. The ring PTFE membrane is not easy to be clogged, so the electrode is suitable for long-term online detection.

Applications:

Features:

1. Industry pH Electrode with BNC Connector
2. PH2.0 Interface (3-foot patch )
3. Gain Adjustment Potentiometer
4. Power Indicator LED

Specifications:

1. Module Power: 5.00V
2. Module Size : 43mm x 32mm（1.70″x1.26″)
3. Measuring Range:0-14PH
4. Measuring Temperature:0-60 ℃
5. Accuracy : ± 0.1pH (25 ℃)
6. Response Time: ≤ 1min

Package Includes:

1 x DFRobot Gravity Industrial Grade Analog pH Sensor

Features:

1. Level sensor with reed switch
2. Closed  float end sensor lined up
3. Open  float and sensor out of line
4. Inverse function by reversing the sensor

Package Includes:

1 x CELDUC PTFA0100 Float Switch, PTFA Series

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

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