{"product_id":"industrial-grade-rs485-water-quality-orp-sensor-modbus-rtu-ip68-df-sen0709","title":"Industrial-Grade RS485 Water Quality ORP Sensor (ModBus-RTU, IP68)","description":"\u003cp\u003eThis industrial-grade Water Quality ORP (Oxidation-Reduction Potential) sensor is engineered for precise and reliable water quality analysis. Featuring an integrated probe and housing design, the sensor delivers a streamlined solution for measuring ORP values ranging from -1999 to 1999mV, with a resolution of 1mV and an accuracy of ±5mV.\u003c\/p\u003e\u003cp style=\"text-align: center; \"\u003e\u003cimg src=\"https:\/\/dfimg.dfrobot.com\/enshop\/image\/data\/SEN0709\/1.png\" alt=\"Overview of Industrial-Grade RS485 Water Quality ORP Sensor (ModBus-RTU, IP68)\" title=\"Overview of Industrial-Grade RS485 Water Quality ORP Sensor (ModBus-RTU, IP68)\"\u003e\u003c\/p\u003e\u003cp\u003eDesigned for seamless integration into various monitoring networks, the sensor is equipped with an RS485 communication interface supporting the standard ModBus-RTU protocol. Comprehensive compatibility tutorials for Arduino development boards and DFRobot LoRaWAN systems are available, enabling rapid setup of testing environments and real-time data acquisition.  \u003c\/p\u003e\u003cp style=\"text-align: center; \"\u003e\u003cimg src=\"https:\/\/dfimg.dfrobot.com\/enshop\/image\/data\/SEN0709\/2.png\" alt=\"Measurement data of Industrial-Grade RS485 Water Quality ORP Sensor (ModBus-RTU, IP68)\" title=\"Measurement data of Industrial-Grade RS485 Water Quality ORP Sensor (ModBus-RTU, IP68)\"\u003e\u003c\/p\u003e\u003cp\u003eTo guarantee highly accurate and consistent data across fluctuating environmental conditions, the sensor incorporates a built-in temperature sensor with automatic temperature compensation. Each unit undergoes rigorous factory calibration, ensuring it is ready for immediate deployment without the need for initial calibration. For long-term maintenance, two-point electrode calibration is supported via register settings to optimize measurement accuracy over prolonged use. Boasting an IP68 waterproof rating, the sensor is built for continuous submersion, making it highly effective for demanding applications.    \u003c\/p\u003e\u003cp\u003e\u003cb\u003eImportant Maintenance Note:\u003c\/b\u003e The probe's protective cap contains a specialized preservation liquid (3.3mol\/L KCl). Even when sealed tightly, minor seepage around the cap may occur, resulting in the formation of white crystalline deposits. This is a normal physical phenomenon indicating that the probe is well-preserved. It does not compromise the sensor's lifespan or accuracy. The crystals can simply be dissolved back into the protective liquid within the cap.\u003c\/p\u003e\u003ch2\u003eFeatures:\u003c\/h2\u003e\u003cli\u003eBroad Measurement Range: Accurately reads from -1999 to 1999 mV with ±5 mV accuracy and 1 mV resolution.\u003c\/li\u003e\u003cli\u003eIndustrial Durability: Integrated probe and housing with an IP68 waterproof rating, rated for continuous underwater operation.\u003c\/li\u003e\u003cli\u003eAutomatic Temperature Compensation: Built-in temperature sensor ensures stable and reliable measurements regardless of environmental fluctuations.\u003c\/li\u003e\u003cli\u003eStandardized Communication: Features an RS485 interface utilizing the standard ModBus-RTU protocol for seamless industrial IoT integration.\u003c\/li\u003e\u003cli\u003eReady to Deploy: Factory calibrated for immediate use; supports simple two-point electrode calibration for long-term accuracy maintenance.\u003c\/li\u003e\u003ch2\u003eApplications:\u003c\/h2\u003e\u003cli\u003eSwimming pool disinfection monitoring\u003c\/li\u003e\u003cli\u003eAquaculture water quality management\u003c\/li\u003e\u003cli\u003eWastewater and effluent treatment plants\u003c\/li\u003e\u003cli\u003eEnvironmental monitoring systems\u003c\/li\u003e\u003cp style=\"text-align: center; \"\u003e\u003cimg src=\"https:\/\/dfimg.dfrobot.com\/enshop\/image\/data\/SEN0709\/3.png\" alt=\"Applications of Industrial-Grade RS485 Water Quality ORP Sensor (ModBus-RTU, IP68)\" title=\"Applications of Industrial-Grade RS485 Water Quality ORP Sensor (ModBus-RTU, IP68)\"\u003e\u003c\/p\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         ORP: -1999~1999mV\u003cbr\u003e         Temperature: 0°C~+60°C\u003c\/li\u003e\u003cli\u003eMeasurement Accuracy:\u003cbr\u003e         ORP: ≤±5mV (at 25, in 222mV standard solution)\u003cbr\u003e         Temperature: ±0.5°C\u003c\/li\u003e\u003cli\u003eResolution:\u003cbr\u003e         ORP: 1mV\u003cbr\u003e         Temperature: 0.1°C\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\/sen0709\/\" target=\"_blank\"\u003eProduct wiki\u003c\/a\u003e\u003c\/li\u003e\u003ch2\u003eProduct Includes:\u003c\/h2\u003e\u003cli\u003eRS485 Water Quality ORP 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\u003eBlack protective mesh x1\u003c\/li\u003e\u003cli\u003eCable ties x2\u003c\/li\u003e","brand":"DFRobot","offers":[{"title":"Default Title","offer_id":42388489535570,"sku":"DF-SEN0709","price":286.4,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0735\/0383\/files\/SEN0709_Main_01.jpg?v=1777691588","url":"https:\/\/www.pakronics.com.au\/products\/industrial-grade-rs485-water-quality-orp-sensor-modbus-rtu-ip68-df-sen0709","provider":"Pakronics®","version":"1.0","type":"link"}