Description:

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 EC 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 bboards The output signal filtered by hardware has low jitters. 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 two-point calibration method and can automatically identify a standard buffer solution, which is simple and convenient.

With this product, the main control board (such asArduino), and the software library, you can quickly build an electrical conductivity meter, plug and play, and no welding. DFRobot provides a variety of water quality sensor products, uniform sizes, and interfaces that not only meet the needs of various water quality testing but are also suitable for the DIY of multi-parameter water quality testers.

Conductivity is the reciprocal of the resistance, which is related to the ability of the material to carry the current. In the liquid, the reciprocal of the resistance, the conductivity, is the measure of its ability to conduct electricity. Conductivity is an important parameter of water quality. It can reflect the extent of electrolytes present in water.
Tips:
To ensure measurement accuracy, it is strongly recommended to add atemperature sensorto measure the temperature and achieve automatic temperature compensation.DS18B20 waterproof temperature sensorcan also be used.

Specifications:

Signal Conversion Board (Transmitter) V2

• Supply Voltage: 3.0~5.0V
• Output Voltage: 0~3.4V
• Probe Connector: BNC
• Signal Connector: PH2.0-3Pin
• Measurement Accuracy: 5% F.S.
• Board size: 42mm*32mm/1.65in*1.26in

Electrical Conductivity Probe

• Probe Type: Laboratory Grade
• Cell Constant: 1.0
• Support Detection Range: 0~20ms/cm
• Recommended Detection Range: 1~15ms/cm
• Temperature Range: 0~40C
• Probe Life: >0.5 years (depending on the frequency of use)
• Cable Length: 100cm

Features:

• 3.0~5.0V wide voltage input
• Hardware filtered output signal, low jitter
• AC excitation source effectively reduces polarization
• Gravity connector and BNC connector, plug and play, no welding
• The software library supports two-point calibration and automatically identifies standard buffer solutions, integrating temperature compensation algorithm
• Uniform size and connector, convenient for the design of mechanical structures

Applications:

• Water quality monitoring.
• Aquaculture.
• Hydroponic & Aquaponic.

Projects:

• Project 1.EC Meter with ESP32 and DFRobot EC module

Introduction:How to use the DFRobot PH Meter module with an ESP32.

• Project 2.Build KnowFlow: automatic water monitor

KnowFlowis the name of this water quality monitoring device based on Arduino Uno. It can automatically monitor five parameters of water: pH, Temperature, Dissolved Oxygen, Electronic Conductivity, and ORP.

Useful links:

• Electrical Conductivity Sensor
• More EC meter Documents

Package Included:

• 1 x Electrical Conductivity ProbeK=1, Laboratory Grade)
• 1 x Signal Conversion Board (Transmitter) V2
• 2 x Standard Buffer Solution 1413us/cm
• 2 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 * 10 nylon pillar
• 8 x M3 * 5 screw