DFRobot
RS485 Industrial Water Conductivity Sensor K=10
· MPN: SEN0707
This industrial-grade water electrical conductivity sensor combines the probe and housing in one integrated unit for straightforward installation and reliabl...
This industrial-grade water electrical conductivity sensor combines the probe and housing in one integrated unit for straightforward installation and reliable EC measurement. With an electrode constant of K=10, it is suited to higher-conductivity water monitoring across aquaculture, tap water, drinking water treatment, hydroponics and agricultural irrigation.
The sensor can output conductivity, salinity and TDS data, with a built-in temperature sensor providing automatic temperature compensation. It uses an RS485 interface with standard ModBus-RTU protocol, making it suitable for industrial monitoring systems and maker data-logging projects.
DFRobot provides tutorials for connecting the sensor to Arduino development boards and DFRobot LoRaWAN for quick test setup and real-time monitoring. It is factory calibrated for immediate use, and the package includes the RS485 Water Quality Electrical Conductivity Sensor (K=10) x1, 5m sensor cable x1, 12880μS/cm conductivity calibration solution 100ml x1, black protective mesh x1 and cable ties x2.
Features:
- Simple calibration: Simple calibration function
- Electrode calibration: Supports electrode calibration
- Measurement range: 10~20000 μS/cm
- Resolution: 1 μS/cm
- Accuracy: ±1% FS
- Salinity conversion: Features salinity conversion function, capable of outputting salinity data
- TDS conversion: Features TDS conversion function, capable of outputting TDS data
- Integrated design: Integrated probe housing design
- Waterproof rating: Waterproof rating up to IP68
- Built-in temperature sensor: Automatic temperature compensation to ensure measurement accuracy
- RS485 communication: RS485 communication interface
- ModBus-RTU: Supports ModBus-RTU protocol
Specifications:
- Power Supply Voltage: 10~30V DC
- Power Consumption: 0.4W
- Communication Interface: RS485 (Standard ModBus-RTU protocol)
- Measurement Range - Conductivity: K=10: 10~20000 μS/cm
- Measurement Range - Temperature: -20°C~+60°C
- Measurement Range - Salinity: K=10: 0~11476ppm
- Measurement Range - TDS: K=10: 0~13400ppm
- Measurement Accuracy - Conductivity: ±1%FS
- Measurement Accuracy - Temperature: ±0.5°C
- Resolution - Conductivity: 1 μS/cm
- Resolution - Temperature: 0.1°C
- Temperature Compensation Range: -20°C~+60°C
- Temperature Compensation Coefficient: Default 0.02
- Response Time: ＜1S
- Operating Temperature: -20°C~+80°C
- Waterproof Rating: IP68
- Pressure Resistance: 0.6MPa
- Cable Length: 5m
- Housing Material: Corrosion-resistant plastic
A practical choice for water quality monitoring where long-term submersion, RS485 networking and multi-parameter EC/TDS/salinity output are required.
Jargon buster
Plain-language definitions for the technical terms used above.
- Modbus
- Modbus is an industrial communication protocol used by many meters, sensors, PLCs, and automation devices. Modbus support matters because it can make the controller easier to integrate with existing industrial equipment.
- ModBus-RTU
- ModBus-RTU is a common industrial protocol for sending sensor readings and control commands over serial links such as RS485. Knowing the sensor uses ModBus-RTU helps you choose software libraries, data loggers, or controllers that can request and interpret its readings.
- RS485
- RS485 is a robust wired serial communication standard often used in factories, farms, and buildings where cables may be long or electrically noisy. It matters because it lets this controller connect to industrial sensors, meters, and control equipment over longer distances than typical hobby serial wiring.
- Temperature compensation
- Temperature compensation means the sensor adjusts its readings to reduce errors caused by changes in water temperature. This matters for field monitoring because ponds, rivers, and tanks can vary in temperature throughout the day and across seasons.
Supplier page — dfrobot.com
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