{"product_id":"rs485-modbus-water-quality-ph-sensor-ip68-df-sen0708","title":"RS485 Modbus Water Quality pH Sensor (IP68)","description":"\u003cp\u003eThe RS485 Water Quality pH Sensor is an industrial-grade instrument engineered for continuous and precise water pH measurement. Featuring an integrated probe and housing design, the unit delivers a streamlined, robust solution for demanding environments. It accurately captures \u003cb\u003epH levels across a 0-14 range, offering a high resolution of 0.01 pH and an accuracy of ±0.15 pH.  \u003c\/b\u003e\u003c\/p\u003e\u003cp style=\"text-align: center; \"\u003e\u003cimg src=\"https:\/\/dfimg.dfrobot.com\/enshop\/image\/data\/SEN0708\/1.png\" alt=\"Overview of RS485 Industrial-Grade Water Electrical Conductivity Sensor (K=10)\" title=\"Overview of RS485 Industrial-Grade Water Electrical Conductivity Sensor (K=10)\"\u003e\u003c\/p\u003e\u003cp\u003eDesigned for seamless integration into IoT networks and automated systems, this pH sensor is equipped with an RS485 communication interface supporting the standard Modbus-RTU protocol. Comprehensive documentation and tutorials for Arduino development boards and DFRobot LoRaWAN are available, making it an exceptional arduino water ph sensor for rapidly deploying testing environments and real-time data monitoring systems. To guarantee consistent data output under fluctuating environmental conditions, the sensor features a built-in temperature component that provides Automatic Temperature Compensation (ATC).  \u003c\/p\u003e\u003cp style=\"text-align: center; \"\u003e\u003cimg src=\"https:\/\/dfimg.dfrobot.com\/enshop\/image\/data\/SEN0708\/2.png\" alt=\"Measurement data of RS485 Industrial-Grade Water Electrical Conductivity Sensor (K=10)\" title=\"Measurement data of RS485 Industrial-Grade Water Electrical Conductivity Sensor (K=10)\"\u003e\u003c\/p\u003e\u003cp\u003eRigorous factory calibration ensures the device is operational immediately out of the box without requiring initial secondary calibration. For long-term deployment, the package includes three standard buffer powders (pH 4.01, 6.86, and 9.18) and supports two-point electrode calibration via register settings, allowing for quick optimization of measurement accuracy over extended use. Backed by an IP68 waterproof rating, the sensor is designed for prolonged underwater submersion. It is highly suitable for monitoring non-corrosive, weakly acidic, and weakly alkaline environments, including wastewater treatment facilities, aquaculture, and general water quality monitoring.  \u003c\/p\u003e\u003cp style=\"text-align: center; \"\u003e\u003cimg src=\"https:\/\/dfimg.dfrobot.com\/enshop\/image\/data\/SEN0708\/3.png\" alt=\"Measurement data of RS485 Industrial-Grade Water Electrical Conductivity Sensor (K=10)\" title=\"Measurement data of RS485 Industrial-Grade Water Electrical Conductivity Sensor (K=10)\"\u003e\u003c\/p\u003e\u003cp\u003e\u003cb\u003eNote on Potassium Chloride (KCl) Crystals: \u003c\/b\u003eThe protective cap of the probe contains a 3.3mol\/L KCl protective solution. Occasionally, some liquid may seep around the tightly sealed cap and form white crystals. This is a normal physical phenomenon. As long as the protective liquid remains inside the cap, the lifespan and accuracy of the pH sensor are completely unaffected. It is recommended to simply brush any white crystals back into the protective liquid within the cap.\u003c\/p\u003e\u003ch2\u003eFeatures:\u003c\/h2\u003e\u003cli\u003eRobust Communication: RS485 interface supporting standard ModBus-RTU protocol for reliable, long-distance data transmission.\u003c\/li\u003e\u003cli\u003eIndustrial Durability: Integrated probe housing design featuring an IP68 waterproof rating, enabling extended continuous submersion.\u003c\/li\u003e\u003cli\u003eHigh Precision: Wide measurement range (0-14 pH) with a resolution of 0.01 pH and an accuracy of ±0.15 pH.\u003c\/li\u003e\u003cli\u003eAutomatic Temperature Compensation (ATC): Built-in temperature sensor mitigates environmental fluctuations to ensure strict measurement accuracy.\u003c\/li\u003e\u003cli\u003eDeveloper Friendly: Functions seamlessly as a pH sensor for arduino with full tutorial support.\u003c\/li\u003e\u003cli\u003eSimplified Maintenance: Factory calibrated out-of-the-box, with built-in support for two-point electrode calibration.\u003c\/li\u003e\u003ch2\u003eApplications:\u003c\/h2\u003e\u003cli\u003eAquaculture and hydroponics water quality control\u003c\/li\u003e\u003cli\u003eWastewater and effluent treatment monitoring\u003c\/li\u003e\u003cli\u003eEnvironmental surface and groundwater monitoring\u003c\/li\u003e\u003cli\u003eSmart agriculture and IoT environmental setups\u003c\/li\u003e\u003ch2\u003eSpecification:\u003c\/h2\u003e\u003cli\u003ePower Supply Voltage: 10~30V DC\u003c\/li\u003e\u003cli\u003ePower Consumption: 0.4W\u003c\/li\u003e\u003cli\u003eCommunication Interface: RS485 (Standard ModBus-RTU protocol)\u003c\/li\u003e\u003cli\u003eMeasurement Range:\u003cbr\u003e         pH: 0~14 pH\u003cbr\u003e         Temperature: 0°C~+60°C\u003c\/li\u003e\u003cli\u003eMeasurement Accuracy:\u003cbr\u003e         pH: ±0.15 pH\u003cbr\u003e         Temperature: ±0.5°C\u003c\/li\u003e\u003cli\u003eResolution:\u003cbr\u003e         pH: 0.01 pH\u003cbr\u003e         Temperature: 0.1°C\u003c\/li\u003e\u003cli\u003eRepeatability Error: ±0.02 pH\u003c\/li\u003e\u003cli\u003eTemperature Compensation Range: 0°C~+60°C\u003c\/li\u003e\u003cli\u003eResponse Time: 1S\u003c\/li\u003e\u003cli\u003eOperating Temperature: 0°C~+80°C\u003c\/li\u003e\u003cli\u003eWaterproof Rating: IP68\u003c\/li\u003e\u003cli\u003ePressure Resistance: 0.6MPa\u003c\/li\u003e\u003cli\u003eCable Length: 5m\u003c\/li\u003e\u003cli\u003eHousing Material: Corrosion-resistant plastic                                      \u003c\/li\u003e\u003ch2\u003eDocuments:\u003c\/h2\u003e\u003cli\u003e\u003ca href=\"https:\/\/wiki.dfrobot.com\/sen0708\/\" target=\"_blank\"\u003eProduct wiki\u003c\/a\u003e\u003c\/li\u003e\u003ch2\u003eProduct Includes:\u003c\/h2\u003e\u003cli\u003eRS485 Water Quality pH Sensor x1\u003c\/li\u003e\u003cli\u003e5m sensor cable x1\u003c\/li\u003e\u003cli\u003eElectrode protective solution 100ml (3.3mol\/L KCl) x1\u003c\/li\u003e\u003cli\u003epH 4.01 buffer powder x1\u003c\/li\u003e\u003cli\u003epH 6.86 buffer powder x1\u003c\/li\u003e\u003cli\u003epH 9.18 buffer powder x1\u003c\/li\u003e\u003cli\u003eBlack protective mesh x1\u003c\/li\u003e\u003cli\u003eCable ties x2\u003c\/li\u003e","brand":"DFRobot","offers":[{"title":"Default Title","offer_id":42388489470034,"sku":"DF-SEN0708","price":206.4,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0735\/0383\/files\/SEN0708_Main_01.jpg?v=1777691579","url":"https:\/\/www.pakronics.com.au\/products\/rs485-modbus-water-quality-ph-sensor-ip68-df-sen0708","provider":"Pakronics®","version":"1.0","type":"link"}