DFROBOT Gravity Analogue Electrical Conductivity Sensor

The DFROBOT Gravity Analogue Electrical Conductivity Sensor is a comprehensive kit designed to measure the electrical conductivity of aqueous solutions and evaluate water quality. Featuring a plug-and-play design, an intuitive software library, and support for both 3.3V and 5V microcontrollers such as Arduino, it provides a simple and effective measuring solution.

The software library employs a two-point calibration method and a temperature compensation algorithm, and it can automatically identify standard buffer solutions. A hardware-based filter for the output signal significantly reduces jitter, while reduced polarisation improves precision and prolongs the lifespan of the laboratory-grade probe.

Key Features

• Plug-and-play Gravity 3-pin interface and BNC probe connector, requiring no soldering
• Wide voltage input range of 3V-5V, supporting both 5V and 3.3V control boards
• Board output voltage: 0-3.4V
• Measurement accuracy: ±5%
• Compact board size: 42 x 32 mm

Probe Specifications

• Laboratory-grade probe with a cell constant of 1.0
• Detection range: 0-20ms/cm (recommended: 1-15ms/cm)
• Operating temperature range: 0-40°C
• Probe lifespan: Approximately greater than 0.5 years (depending on frequency of use)
• Probe cable length: 1m

Important Note: The laboratory-grade probe is not designed for prolonged periods of immersion and should be cleaned after each use to maintain accuracy and longevity.

Kit Contents

• Conversion board
• Conductivity probe (K=1)
• 2 x 1413µs buffer solution
• 2 x 12.88ms buffer solution
• Analogue sensor cable
• 2 x waterproof gaskets
• BNC cap
• Screws and standoffs