{"product_id":"389-01-12-55-rosemount-general-purpose-ph-orp-sensor-process-probe","title":"389-01-12-55 Rosemount General Purpose pH ORP Sensor | Process Probe","description":"\u003ch3\u003e\u003cstrong\u003e389-01-12-55 Rosemount™ General Purpose pH\/ORP Sensor\u003c\/strong\u003e\u003c\/h3\u003e\n\n\u003cp\u003e\u003cstrong\u003eRosemount™ \u003cspan style=\"color:#c0392b;\"\u003e389-01-12-55\u003c\/span\u003e\u003c\/strong\u003e delivers stable analytical measurement performance in demanding process environments.\u003c\/p\u003e\n\n\u003cp\u003eThe sensor combines rugged mechanical construction with long-term electrochemical stability.\u003c\/p\u003e\n\n\u003cp\u003eIts triple junction reference structure protects against aggressive contamination and poisoning ions.\u003c\/p\u003e\n\n\u003cp\u003eThe enhanced glass formulation minimizes cracking risks during thermal and chemical cycling.\u003c\/p\u003e\n\n\u003cp\u003eThis configuration supports continuous ORP monitoring with a platinum sensing element.\u003c\/p\u003e\n\n\u003cp\u003eThe integrated preamplifier simplifies signal transmission in industrial installations.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003e\u003cspan style=\"color:#c0392b;\"\u003e389-01-12-55\u003c\/span\u003e\u003c\/strong\u003e supports insertion, immersion, and flow-through mounting configurations.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eEngineered for Continuous Process Reliability\u003c\/strong\u003e\u003c\/h3\u003e\n\n\u003cul\u003e\n\u003cli\u003eTriple junction technology improves sensor operational lifespan.\u003c\/li\u003e\n\u003cli\u003eCeramic junction structure stabilizes reference performance.\u003c\/li\u003e\n\u003cli\u003eViton® sealing components improve chemical durability.\u003c\/li\u003e\n\u003cli\u003eTefzel® body construction withstands aggressive process media.\u003c\/li\u003e\n\u003cli\u003eIntegral preamplifier minimizes signal degradation over long cable distances.\u003c\/li\u003e\n\u003cli\u003eSMART sensor functionality accelerates transmitter recognition.\u003c\/li\u003e\n\u003cli\u003ePreloaded calibration data reduces field commissioning time.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eCore Technical Characteristics\u003c\/strong\u003e\u003c\/h3\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Rosemount™\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e \u003cstrong\u003e\u003cspan style=\"color:#c0392b;\"\u003e389-01-12-55\u003c\/span\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries:\u003c\/strong\u003e Rosemount™ 389 General Purpose Sensors\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMeasurement Type:\u003c\/strong\u003e ORP Measurement\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMeasurement Range:\u003c\/strong\u003e -1500 to +1500 mV\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003epH Range:\u003c\/strong\u003e 0 to 14 pH\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature Range:\u003c\/strong\u003e 32 to 185 °F (0 to 85 °C)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAutomatic Temperature Compensation:\u003c\/strong\u003e 32 to 185 °F\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eORP Electrode Material:\u003c\/strong\u003e Platinum\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReference Junction:\u003c\/strong\u003e Ceramic\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeal Material:\u003c\/strong\u003e Viton®\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBody Material:\u003c\/strong\u003e Polyester\/polycarbonate\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProcess Fittings:\u003c\/strong\u003e 316 stainless steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFront Process Connection:\u003c\/strong\u003e 1-in. MNPT\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRear Process Connection:\u003c\/strong\u003e 1-in. MNPT\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSensor Connection:\u003c\/strong\u003e 1-in. NPT adapter\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlow Cell Pressure Rating:\u003c\/strong\u003e 90 psig\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlow Rate:\u003c\/strong\u003e 2 to 5 GPH\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlow Cell Temperature:\u003c\/strong\u003e 32 to 158 °F\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePreamplifier Cable:\u003c\/strong\u003e Integral 25-ft. cable\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eGlobal PLC Spare HUB's Insight\u003c\/strong\u003e\u003c\/h3\u003e\n\n\u003cp\u003eProcess engineers often select the \u003cstrong\u003e\u003cspan style=\"color:#c0392b;\"\u003eRosemount™ 389 Series\u003c\/span\u003e\u003c\/strong\u003e for chemically unstable applications.\u003c\/p\u003e\n\n\u003cp\u003eThe triple junction reference design performs effectively in sulfide and ammonia exposure conditions.\u003c\/p\u003e\n\n\u003cp\u003eThe integrated preamplifier improves signal integrity in electrically noisy plant environments.\u003c\/p\u003e\n\n\u003cp\u003eThe sensor performs reliably in continuous-duty liquid analysis loops.\u003c\/p\u003e\n\n\u003cp\u003eIts rugged threaded body simplifies retrofits in existing analytical skids.\u003c\/p\u003e\n\n\u003cp\u003eThe SMART compatibility reduces commissioning complexity during maintenance shutdowns.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eCompatible Equipment Platforms\u003c\/strong\u003e\u003c\/h3\u003e\n\n\u003cul\u003e\n\u003cli\u003eRosemount™ 56 analytical transmitters\u003c\/li\u003e\n\u003cli\u003eRosemount™ 1056 multiparameter analyzers\u003c\/li\u003e\n\u003cli\u003eRosemount™ 1057 single-channel transmitters\u003c\/li\u003e\n\u003cli\u003eRosemount™ 1066 process transmitters\u003c\/li\u003e\n\u003cli\u003eRosemount™ 5081 process analyzers\u003c\/li\u003e\n\u003cli\u003eIndustrial water treatment skids\u003c\/li\u003e\n\u003cli\u003eChemical injection systems\u003c\/li\u003e\n\u003cli\u003eWastewater neutralization systems\u003c\/li\u003e\n\u003cli\u003eCooling tower monitoring loops\u003c\/li\u003e\n\u003cli\u003eInline process analytical panels\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eRecommended Industrial Applications\u003c\/strong\u003e\u003c\/h3\u003e\n\n\u003cul\u003e\n\u003cli\u003eMunicipal water treatment facilities\u003c\/li\u003e\n\u003cli\u003eIndustrial wastewater processing\u003c\/li\u003e\n\u003cli\u003ePower generation chemistry loops\u003c\/li\u003e\n\u003cli\u003eChemical production plants\u003c\/li\u003e\n\u003cli\u003ePulp and paper processing\u003c\/li\u003e\n\u003cli\u003eMining process water analysis\u003c\/li\u003e\n\u003cli\u003eFood and beverage cleaning systems\u003c\/li\u003e\n\u003cli\u003eCooling water corrosion monitoring\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eDiagnostic and Operational Advantages\u003c\/strong\u003e\u003c\/h3\u003e\n\n\u003cul\u003e\n\u003cli\u003eFast sensor recognition minimizes startup delays.\u003c\/li\u003e\n\u003cli\u003eStored calibration values reduce human calibration errors.\u003c\/li\u003e\n\u003cli\u003eStable reference performance supports long maintenance intervals.\u003c\/li\u003e\n\u003cli\u003eIntegral preamplifier reduces electrical interference risks.\u003c\/li\u003e\n\u003cli\u003eChemically resistant materials improve operational consistency.\u003c\/li\u003e\n\u003cli\u003eField replacement procedures require minimal tooling.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eInstallation and Handling Notes\u003c\/strong\u003e\u003c\/h3\u003e\n\n\u003cul\u003e\n\u003cli\u003eInstall the sensor away from direct mechanical vibration.\u003c\/li\u003e\n\u003cli\u003eUse shielded cable routing near variable frequency drives.\u003c\/li\u003e\n\u003cli\u003eVerify process pressure before installation.\u003c\/li\u003e\n\u003cli\u003eMaintain proper immersion depth during submersion mounting.\u003c\/li\u003e\n\u003cli\u003eAvoid dry storage after commissioning preparation.\u003c\/li\u003e\n\u003cli\u003eClean the platinum electrode regularly in scaling applications.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eShipping and Warranty Information\u003c\/strong\u003e\u003c\/h3\u003e\n\n\u003cul\u003e\n\u003cli\u003e12-month warranty coverage included.\u003c\/li\u003e\n\u003cli\u003eProtective industrial packaging supplied.\u003c\/li\u003e\n\u003cli\u003eFedEx international shipping available.\u003c\/li\u003e\n\u003cli\u003eUPS global delivery available.\u003c\/li\u003e\n\u003cli\u003eDHL express logistics supported.\u003c\/li\u003e\n\u003cli\u003eFast dispatch for urgent maintenance requirements.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eProfessional FAQ\u003c\/strong\u003e\u003c\/h3\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhy does triple junction technology matter in ORP measurement?\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThe design isolates contaminants and extends reference stability in chemically aggressive liquids.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eHow can engineers reduce ORP signal drift during operation?\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eMaintain clean electrode surfaces and avoid air bubble accumulation around the sensing tip.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhich process conditions benefit most from this sensor design?\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eApplications containing sulfides, cyanides, chlorine, or ammonia benefit significantly from this configuration.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat should users evaluate before selecting cable length?\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eConsider transmitter distance, electrical noise exposure, and installation routing conditions.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhy do many plants prefer integrated preamplifier configurations?\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThe integrated electronics improve signal stability and simplify analytical loop troubleshooting.\u003c\/p\u003e","brand":"Rosemount","offers":[{"title":"Default Title","offer_id":45138162286774,"sku":"389-01-12-55","price":296.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0722\/7863\/8774\/files\/389-01-12-55_3c2e2db7-6635-4863-a1c9-5b7124eea30d.jpg?v=1779438192","url":"https:\/\/www.plcsparehub.com\/products\/389-01-12-55-rosemount-general-purpose-ph-orp-sensor-process-probe","provider":"Global PLC Spare Hub","version":"1.0","type":"link"}