{"product_id":"rs485-ph-orp-and-temperature-sensor","title":"RS485 pH, ORP and Temperature Sensor","description":"\u003cp\u003e\u003cstrong\u003eThe RS485 pH, ORP and Temperature Sensor continuously monitors three key water quality measurements, with temperature compensation, configurable filtering and RS485 Modbus RTU connectivity in a rugged IP68-rated design.\u003c\/strong\u003e\u003c\/p\u003e \u003chr\u003e \u003cp\u003eThe \u003ca href=\"\/collections\/seeed\" title=\"Seeed Products\"\u003eSeeed\u003c\/a\u003e \u003cstrong\u003eRS485 pH, ORP and Temperature Sensor\u003c\/strong\u003e is a \u003cstrong\u003ehigh-precision sensor\u003c\/strong\u003e for water treatment, smart agriculture, and environmental monitoring.\u003c\/p\u003e \u003cp\u003eIt \u003cstrong\u003econtinuously measures pH\u003c\/strong\u003e, oxidation-reduction potential (\u003cstrong\u003eORP\u003c\/strong\u003e), and \u003cstrong\u003ewater temperature\u003c\/strong\u003e. Temperature compensation and configurable signal filtering help ensure stable readings under changing conditions. For easy integration, it supports \u003cstrong\u003eRS485 Modbus RTU communication\u003c\/strong\u003e and \u003cstrong\u003e4.5–28 V DC operation\u003c\/strong\u003e. It's IP68-rated design, 3\/4-inch NPT threads, and built-in electrical protection ensure reliable long-term use.\u003c\/p\u003e \u003ch2\u003eFeatures\u003c\/h2\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eIntegrated pH and ORP Monitoring:\u003c\/strong\u003e Measures pH, oxidation-reduction potential (ORP), and temperature in a single device. These parameters provide a more complete understanding of water acidity, chemical balance, and oxidation-reduction conditions for water-quality assessment and process monitoring.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eTemperature Compensation and Flexible Calibration:\u003c\/strong\u003e Supports temperature-compensated pH and ORP measurements to reduce the influence of changing water temperature. Multi-point pH calibration and ORP standard-solution calibration help ensure measurement accuracy. Meanwhile, temperature offset adjustment and configurable signal filtering maintain stable readings across different environments.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eIndustrial RS485 Modbus RTU Communication:\u003c\/strong\u003e Uses the RS485 Modbus RTU interface for reliable long-distance data transmission and connection of multiple sensors on the same communication bus. Configurable device address, baud rate, parity, and data format make integration with industrial controllers, data loggers, and monitoring systems more flexible.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eRugged IP68 Installation Design:\u003c\/strong\u003e Features an IP68 enclosure and 3\/4-inch NPT threads for submerged, pipeline, and tank installation. A wide 4.5–28 V DC power range allows for flexible system integration. In addition, built-in surge, reverse-polarity, TVS, and ESD protection improve reliability in water treatment, wastewater monitoring, and smart-agriculture applications.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eSenseCAP S2100 Data Logger\u003c\/strong\u003e can connect to Modbus RS485\/Analog\/GPIO industrial sensors including the Grow Your Idea and transmit data from sensors to the LoRaWAN network. Benefiting from its high robustness and waterproof and dustproof enclosure, the S2100 data logger can work under harsh environments such as high UV exposure, heavy rain, dusty conditions, etc. which is ideal for outdoor use. Based on LoRaWAN, it can cover a long transmission range of 2km in urban scenes and 10km in line-of-sight while keeping lower power consumption. Equipped with built-in Bluetooth and app service for OTA configuration and remote management, it enables quick setup and update. It can be battery-powered or connected to a 12V external power supply. When the 12V power supply is connected, the replaceable built-in battery is set to be used as the backup power supply.\u003c\/li\u003e \u003c\/ul\u003e \u003ch2\u003eSpecifications\u003c\/h2\u003e \u003ctable\u003e \u003ctbody\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eProduct model\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003eS-pH\u0026amp;ORP-01A\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eOutput interface\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003eRS485\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eProtocol\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003eModbus RTU\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eDefault serial communication\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003eSlave address: 1;\u003cbr\u003ebaud rate: 9600 bps;\u003cbr\u003edata bits: 8;\u003cbr\u003estop bits: 1 stop bit;\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003ePower supply\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e4.5–28 V DC\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003ePower consumption\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003eQuiescent \u0026lt;8 mA at 12 V DC;\u003cbr\u003emeasuring \u0026lt;10 mA at 12 V DC;\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eIP rating\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003eIP68\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eOperating conditions\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e0–80 °C; 0–100% RH; pressure ≤0.2 MPa\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eStorage conditions\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e−5 to 65 °C; 0–90% RH\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eCable length\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e2 m;\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e207 × 30 mm (length × diameter)\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eMechanical connection\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e3\/4-inch NPT threads\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003epH Measurement\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eRange\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e0.00–14.00 pH\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eResolution\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e0.01 pH\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eAccuracy\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e±0.1 pH\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eResponse time\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e\u0026lt;10 s\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eORP Measurement\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eRange\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e−2000.0 to 2000.0 mV\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eResolution\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e0.1 mV\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eAccuracy\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e±20 mV\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eResponse time\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e\u0026lt;30 s\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eTemperature Measurement\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eRange\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e−40 to 80 °C\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eResolution\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e0.1 °C\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eAccuracy\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e±0.5 °C\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eSupplier Code\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e100050803\u003c\/td\u003e \u003c\/tr\u003e \u003c\/tbody\u003e \u003c\/table\u003e \u003ch3\u003eWiring Diagram\u003c\/h3\u003e \u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0176\/3274\/files\/106957_Wiring_diagram_1.jpg?v=1787314746\" alt=\"\"\u003e\u003c\/p\u003e \u003ch2\u003eResources\u003c\/h2\u003e \u003cul\u003e \u003cli\u003e\u003ca href=\"https:\/\/files.seeedstudio.com\/products\/100050803\/res\/RS485%20pH,%20ORP%20and%20Temperature%20Sensor%20User%20Manual.pdf\" target=\"_blank\" rel=\"noopener\" title=\"Datasheet\"\u003eDatasheet\u003c\/a\u003e\u003c\/li\u003e \u003c\/ul\u003e \u003ch2\u003ePackage Contents\u003c\/h2\u003e \u003cul\u003e \u003cli\u003e1x RS485 pH, ORP and Temperature Sensor\u003c\/li\u003e \u003c\/ul\u003e","brand":"Seeed","offers":[{"title":"Default Title","offer_id":56151963926913,"sku":"106957","price":162.2,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0176\/3274\/files\/rs485-ph-orp-and-temperature-sensor-seeed-106957-1255427097.jpg?v=1787324172","url":"https:\/\/thepihut.com\/products\/rs485-ph-orp-and-temperature-sensor","provider":"The Pi Hut","version":"1.0","type":"link"}