DFRobot SEN0451 Gravity Industrial Analog EC Sensor Kit (K=1), IP68, 100–2000 µS/cm, PT1000 Temp Comp, 3.3–5 V for Arduino/Raspberry Pi

Overview

DFRobot SEN0451 is an industrial-grade EC (electrical conductivity) sensor kit designed for continuous 24/7 monitoring. The IP68 K=1 probe supports long-term immersion and integrates a PT1000 platinum RTD for easy temperature compensation. An AC excitation source and onboard hardware filtering minimize polarization and jitter for stable readings. The module outputs 0–3 V and accepts 3.3–5.0 V supply, making it plug-and-play with Arduino, Raspberry Pi, and other 3.3/5 V controllers. With a practical range of 100–2000 µS/cm (max 1–2200 µS/cm), it’s ideal for hydroponics, aquaculture, and environmental water monitoring. The kit includes calibration solution and accessories so you can build an EC monitoring platform quickly—no soldering required.

Key Features

• Industrial IP68 probe (K=1) for long-term immersion; 0.5 MPa pressure rating

• Practical range 100–2000 µS/cm (max 1–2200 µS/cm) for freshwater and nutrient solutions

• PT1000 temperature detector for straightforward temperature-compensated measurements

• AC excitation & hardware filtering reduce polarization and signal jitter, enhancing precision and probe life

• 3.3–5.0 V supply, 0–3 V analog output, Gravity interface; no soldering, plug-and-play

• Included calibration solution & accessories for quick setup; library with built-in calibration routine

Applications

• Hydroponics nutrient EC monitoring

• Aquaculture water quality management

• Environmental water conductivity/salinity assessment

• DIY multi-parameter water quality stations

Specifications

What’s Included (Shipping List)

• Electrical Conductivity Probe ×1

• Electrical Conductivity Signal Conversion Board (Industrial Grade) ×1

• PT1000 RTD Signal Conversion Board ×1

• Gravity Sensor Cable ×2

• Waterproof Joint ×1

• Waterproof Aviation Connector ×1

• Electrical Conductivity Calibration Standard Solution 1413 µS/cm ×4

• Nylon Pillar Screws Kit ×1

Calibration & Use Tips

• Calibrate with the included 1413 µS/cm standard; use an additional low/high point if your target range requires two-point calibration

• Remove trapped air bubbles from the probe; ensure full immersion and stable temperature before reading

• For continuous deployments, schedule periodic cleaning and recalibration to maintain long-term stability

Details