Product OverviewThe Rosemount 389-01-12-55 is a high-performance ORP sensor for tough industrial liquids.A triple junction reference stops poisoning ions from damaging the internal sensor logic.The Tefzel body and Viton O-rings provide excellent resistance to harsh chemicals.This sensor features cracking-resistant glass to ensure a long service life in high-pressure lines.Advanced SMART technology allows for plug-and-play installation without field calibration delays.Technical SpecificationsBrand: RosemountModel: 389-01-12-55Measurement Type: Oxidation Reduction Potential (ORP)ORP Range: -1500 to 1500 mVTemperature Range: 32 to 185 °F (0 to 85 °C)Wetted Materials: Tefzel (Body), Viton (O-rings), Platinum (Electrode)Connection: 1-in. MNPT Front and Rear FacingPreamplifier: Integral with 25-ft (7.6m) CableMaximum Pressure: 90 psig at 158 °FInterference Immunity: Built-in solution ground for stable signal outputResolution: High-sensitivity platinum tip for precise voltage detectionCompatibility and System IntegrationFully compatible with Rosemount 56, 1056, 1057, 1066, and 5081 transmitters.Automatic sensor recognition reduces setup time for engineering personnel.Stores internal pH/ORP calibration data for immediate use upon connection.Fits standard 1-inch NPT adapters and industrial flow cells.Installation and Maintenance GuideSupport for insertion, submersion, and flow-through mounting styles.The 1-inch MNPT threads allow easy fitting into pipes or tanks.Clean the platinum electrode regularly to maintain fast response times.Check O-ring seals during routine inspections to prevent process leaks.Applications and DiagnosticsIdeal for wastewater treatment and chemical neutralizing tanks.Used in cooling towers to monitor oxidation levels effectively.Advanced diagnostics track sensor health via the connected Rosemount transmitter.Alerts users to coating or depletion before process downtime occurs.Shipping and Service TermsWarranty: 12-month standard quality guarantee.Express Shipping: Global delivery via FedEx, UPS, and DHL.Packaging: Secure industrial-grade boxing with factory inspection report.Frequently Asked QuestionsIs the cable included? Yes, this model includes a 25-foot integral cable.Can I use this in high pH? Yes, the glass electrode option handles high pH levels.Is it SMART enabled? Yes, it works with all SMART-compatible Rosemount transmitters.
