DFRobot SEN0451 Gravity Industrial Analog EC Sensor Kit (K=1), IP68, 1002000 S/cm, PT1000 Temp Comp, 3.35 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 03 V and accepts 3.35.0 V supply, making it plug-and-play with Arduino, Raspberry Pi, and other 3.3/5 V controllers. With a practical range of 1002000 S/cm (max 12200 S/cm), its ideal for hydroponics, aquaculture, and environmental water monitoring. The kit includes calibration solution and accessories so you can build an EC monitoring platform quicklyno soldering required.

Key Features

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

• Practical range 1002000 S/cm (max 12200 S/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

• 3.35.0 V supply, 03 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

Item	Value
Supply Voltage	3.35.0 V
Output Signal	03 V (analog)
Probe Type	Industrial grade, long-term immersion
Cell Constant	K = 1
Maximum Range	12200 S/cm
Practical Range	1002000 S/cm
Temperature Detector	PT1000 platinum RTD
Operating Temperature	050 C (non-freezing)
Pressure Rating	0.5 MPa
Waterproof Level	IP68
Cable Length	5 m
Controller Compatibility	3.3 V / 5 V mainboards (Arduino, Raspberry Pi)

Whats 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 S/cm 4

• Nylon Pillar Screws Kit 1

Calibration & Use Tips

• Calibrate with the included 1413 S/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