{"product_id":"seeed-studio-s-ph-01a-industrial-rs485-4-20ma-ph-sensor","title":"Seeed Studio S-pH-01A – Industrial RS485 \u0026 4–20mA pH Sensor","description":"\u003ch3 data-section-id=\"14ie832\" data-start=\"393\" data-end=\"466\" class=\"PDq2pG_selectionAnchorContainer\"\u003eIndustrial pH Sensor for Water Quality \u0026amp; Smart Agriculture Monitoring\u003cspan aria-hidden=\"true\" class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\n\u003c\/h3\u003e\n\u003cp data-start=\"468\" data-end=\"858\"\u003eThe \u003cstrong data-start=\"472\" data-end=\"497\"\u003eSeeed Studio S-pH-01A\u003c\/strong\u003e is a professional \u003cstrong data-start=\"516\" data-end=\"546\"\u003eindustrial-grade pH sensor\u003c\/strong\u003e designed for precise pH monitoring in water, soil and liquid-based environmental applications. It accurately measures pH values in the range of \u003cstrong data-start=\"691\" data-end=\"702\"\u003e0–14 pH\u003c\/strong\u003e, making it suitable for agriculture, hydroponics, aquaponics, water treatment and industrial monitoring applications. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"860\" data-end=\"1178\"\u003eThe sensor supports both \u003cstrong data-start=\"885\" data-end=\"919\"\u003eRS485 MODBUS-RTU communication\u003c\/strong\u003e and \u003cstrong data-start=\"924\" data-end=\"949\"\u003e4–20mA current output\u003c\/strong\u003e, allowing seamless integration with PLCs, RTUs, IoT gateways, industrial controllers and data loggers. This makes it highly versatile for industrial automation and remote monitoring systems. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"1180\" data-end=\"1529\"\u003eThe S-pH-01A uses advanced solid dielectric technology and a large-area PTFE liquid junction, reducing clogging and ensuring long-term stable performance with minimal maintenance. The integrated \u003cstrong data-start=\"1375\" data-end=\"1419\"\u003eATC (Automatic Temperature Compensation)\u003c\/strong\u003e improves measurement accuracy under varying environmental temperatures. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"1531\" data-end=\"1850\"\u003eWith wide supply voltage support (\u003cstrong data-start=\"1565\" data-end=\"1579\"\u003e3.6–30V DC\u003c\/strong\u003e) and industrial-grade protection, the sensor is built for long-term use in harsh environments. Its robust design ensures reliable operation in agriculture, wastewater treatment, swimming pools and environmental sensing applications. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003chr data-start=\"1852\" data-end=\"1855\"\u003e\n\u003ch2 data-section-id=\"1ma7m6t\" data-start=\"1857\" data-end=\"1872\"\u003eKey Features\u003c\/h2\u003e\n\u003cp data-start=\"1874\" data-end=\"2260\"\u003e✔ Industrial pH Sensor\u003cbr data-start=\"1896\" data-end=\"1899\"\u003e✔ pH Range: 0–14\u003cbr data-start=\"1915\" data-end=\"1918\"\u003e✔ RS485 MODBUS-RTU Interface\u003cbr data-start=\"1946\" data-end=\"1949\"\u003e✔ 4–20mA Current Output\u003cbr data-start=\"1972\" data-end=\"1975\"\u003e✔ Automatic Temperature Compensation (ATC)\u003cbr data-start=\"2017\" data-end=\"2020\"\u003e✔ High Accuracy \u0026amp; Fast Response\u003cbr data-start=\"2051\" data-end=\"2054\"\u003e✔ Anti-Clogging Probe Design\u003cbr data-start=\"2082\" data-end=\"2085\"\u003e✔ Low Power Consumption\u003cbr data-start=\"2108\" data-end=\"2111\"\u003e✔ Wide 3.6–30V DC Supply\u003cbr data-start=\"2135\" data-end=\"2138\"\u003e✔ Easy Integration with PLC \/ RTU \/ Gateway\u003cbr data-start=\"2181\" data-end=\"2184\"\u003e✔ Suitable for Long-Term Monitoring\u003cbr data-start=\"2219\" data-end=\"2222\"\u003e✔ Ideal for Water Quality Monitoring\u003c\/p\u003e\n\u003chr data-start=\"2262\" data-end=\"2265\"\u003e\n\u003ch2 data-section-id=\"fng2hd\" data-start=\"2267\" data-end=\"2292\"\u003eTypical Specifications\u003c\/h2\u003e\n\u003cp data-start=\"2294\" data-end=\"2566\"\u003e• Interface: RS485 MODBUS-RTU\u003cbr data-start=\"2323\" data-end=\"2326\"\u003e• Analog Output: 4–20mA\u003cbr data-start=\"2349\" data-end=\"2352\"\u003e• pH Range: 0–14 pH\u003cbr data-start=\"2371\" data-end=\"2374\"\u003e• Resolution: 0.01 pH\u003cbr data-start=\"2395\" data-end=\"2398\"\u003e• Accuracy: ±0.1 pH\u003cbr data-start=\"2417\" data-end=\"2420\"\u003e• Power Supply: 3.6–30V DC\u003cbr data-start=\"2446\" data-end=\"2449\"\u003e• Current Consumption: Max 6mA @ 24V\u003cbr data-start=\"2485\" data-end=\"2488\"\u003e• Operating Temperature: -40°C ~ +85°C\u003cbr data-start=\"2526\" data-end=\"2529\"\u003e• Cable Length: 5m\u003cbr data-start=\"2547\" data-end=\"2550\"\u003e• Weight: 400g\u003c\/p\u003e\n\u003chr data-start=\"2568\" data-end=\"2571\"\u003e\n\u003ch2 data-section-id=\"mu966k\" data-start=\"2573\" data-end=\"2588\"\u003eApplications\u003c\/h2\u003e\n\u003cp data-start=\"2590\" data-end=\"2776\"\u003eWater Quality Monitoring\u003cbr data-start=\"2614\" data-end=\"2617\"\u003eSmart Agriculture\u003cbr data-start=\"2634\" data-end=\"2637\"\u003eHydroponics\u003cbr data-start=\"2648\" data-end=\"2651\"\u003eAquaponics\u003cbr data-start=\"2661\" data-end=\"2664\"\u003eWastewater Treatment\u003cbr data-start=\"2684\" data-end=\"2687\"\u003eSwimming Pools\u003cbr data-start=\"2701\" data-end=\"2704\"\u003eIndustrial Monitoring\u003cbr data-start=\"2725\" data-end=\"2728\"\u003eEnvironmental Monitoring\u003cbr data-start=\"2752\" data-end=\"2755\"\u003eScientific Research\u003c\/p\u003e\n\u003chr data-start=\"2778\" data-end=\"2781\"\u003e\n\u003ch1 data-section-id=\"1spgaq0\" data-start=\"2783\" data-end=\"2799\"\u003eSpecifications\u003c\/h1\u003e\n\u003ch3 data-section-id=\"1b952b4\" data-start=\"2801\" data-end=\"2812\"\u003eGeneral\u003c\/h3\u003e\n\u003cul data-start=\"2814\" data-end=\"2943\"\u003e\n\u003cli data-section-id=\"14xdmye\" data-start=\"2814\" data-end=\"2833\"\u003eModel: S-pH-01A\u003c\/li\u003e\n\u003cli data-section-id=\"1jytu1h\" data-start=\"2834\" data-end=\"2871\"\u003eSensor Type: Industrial pH Sensor\u003c\/li\u003e\n\u003cli data-section-id=\"10mhaa7\" data-start=\"2872\" data-end=\"2892\"\u003eInterface: RS485\u003c\/li\u003e\n\u003cli data-section-id=\"17vvlrs\" data-start=\"2893\" data-end=\"2917\"\u003eProtocol: MODBUS-RTU\u003c\/li\u003e\n\u003cli data-section-id=\"1fd3hfy\" data-start=\"2918\" data-end=\"2943\"\u003eAnalog Output: 4–20mA\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-section-id=\"hgxiwk\" data-start=\"2945\" data-end=\"2963\"\u003epH Measurement\u003c\/h3\u003e\n\u003cul data-start=\"2965\" data-end=\"3029\"\u003e\n\u003cli data-section-id=\"1tc3i1f\" data-start=\"2965\" data-end=\"2983\"\u003eRange: 0–14 pH\u003c\/li\u003e\n\u003cli data-section-id=\"1cgwqm3\" data-start=\"2984\" data-end=\"3007\"\u003eResolution: 0.01 pH\u003c\/li\u003e\n\u003cli data-section-id=\"89gs89\" data-start=\"3008\" data-end=\"3029\"\u003eAccuracy: ±0.1 pH\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-section-id=\"1bp6unc\" data-start=\"3031\" data-end=\"3045\"\u003eElectrical\u003c\/h3\u003e\n\u003cul data-start=\"3047\" data-end=\"3116\"\u003e\n\u003cli data-section-id=\"ijn24p\" data-start=\"3047\" data-end=\"3077\"\u003eSupply Voltage: 3.6–30V DC\u003c\/li\u003e\n\u003cli data-section-id=\"hoybuo\" data-start=\"3078\" data-end=\"3116\"\u003eCurrent Consumption: Max 6mA @ 24V\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-section-id=\"85innx\" data-start=\"3118\" data-end=\"3132\"\u003eMechanical\u003c\/h3\u003e\n\u003cul data-start=\"3134\" data-end=\"3217\"\u003e\n\u003cli data-section-id=\"12nb90f\" data-start=\"3134\" data-end=\"3154\"\u003eCable Length: 5m\u003c\/li\u003e\n\u003cli data-section-id=\"u39u69\" data-start=\"3155\" data-end=\"3171\"\u003eWeight: 400g\u003c\/li\u003e\n\u003cli data-section-id=\"i1eaui\" data-start=\"3172\" data-end=\"3217\"\u003eInstallation: Soil \/ Water \/ Liquid Media\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"2359\" data-end=\"2362\"\u003e\n\u003ch2 data-start=\"2364\" data-end=\"2430\"\u003eProduct Downloads\u003c\/h2\u003e\n\u003cp data-start=\"2364\" data-end=\"2430\"\u003e📑 \u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0724\/0489\/4032\/files\/Seeed_Studio_Industrial_pH_Sensor_with_RS485_Modbus_RTU_and_0_2V_Communication_Datasheet.pdf?v=1782981975\" target=\"_blank\" title=\"Seeed Studio S-pH-01A – Industrial RS485 \u0026amp; 4–20mA pH Sensor\" rel=\"noopener\"\u003e\u003cspan style=\"text-decoration: underline; color: rgb(43, 0, 255);\"\u003e\u003cspan style=\"text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;\"\u003eDatasheet\u003c\/span\u003e\u003c\/span\u003e\u003c\/a\u003e\u003cbr data-start=\"2407\" data-end=\"2410\"\u003e\u003cspan style=\"text-decoration: underline; color: rgb(43, 0, 255);\"\u003e📘\u003ca href=\"https:\/\/docs.rakwireless.com\/product-categories\/wisgate\/rak7268\/quickstart\/\"\u003e \u003c\/a\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0724\/0489\/4032\/files\/Seeed_Studio_Industrial_pH_Sensor_with_RS485_Modbus_RTU_and_0_2V_Communication_User_Manual.pdf?v=1782981976\" target=\"_blank\" title=\"Seeed Studio S-pH-01A – Industrial RS485 \u0026amp; 4–20mA pH Sensor\" rel=\"noopener\"\u003e\u003cspan style=\"text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;\"\u003eUser Manual\u003c\/span\u003e\u003c\/a\u003e\u003c\/span\u003e\u003c\/p\u003e","brand":"Seeed Studio","offers":[{"title":"Default Title","offer_id":53218502476112,"sku":null,"price":149.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/0489\/4032\/files\/SEEED_STUDIO_S-PH-01A_INDUSTRIAL_PH_SENSOR.webp?v=1782982114","url":"https:\/\/invibitshop.com\/products\/seeed-studio-s-ph-01a-industrial-rs485-4-20ma-ph-sensor","provider":"InviBIT Shop","version":"1.0","type":"link"}