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Endress+Hauser Orbipac CPF81D-7LH1O Memosens pH Sensor

The Endress+Hauser CPF81D-7LH1O is a heavy-duty digital Memosens pH sensor designed for tough industrial environments, wastewater treatment, mining operations, and aggressive chemical processes. Housed in a durable PPS body with NPT 3/4″ threads, this compact electrode features a double-chamber reference system with a potassium nitrate ($KNO_3$) electrolyte bridge to prevent electrode poisoning from severe contaminants.

Technical Specifications & Manufacturer Data

  • Part Number: CPF81D-7LH1O

  • Manufacturer: Endress+Hauser

  • Product Line: Orbipac CPF81D

  • Application Version (LH): High-temperature version, pH range 0 to 14 pH, temperature range 0 °C to 110 °C (32 °F to 230 °F)

  • Insertion Length (1): 23 mm with protective guard

  • Approval (O): FM IS / NI Class I Division 1 & 2 hazardous area approval

  • Reference System: Double-chamber reference system with $KNO_3$ bridge and PTFE diaphragm

  • Body Material: PPS (Polyphenylene sulfide) with integrated NPT 3/4″ connection

  • Signal Transmission: Contactless digital Memosens technology

Key Features & Operational Advantages

  • Poison-Resistant Double Chamber: Patented $KNO_3$ electrolyte bridge protects the reference electrode against aggressive poisoning ions like sulfides ($S^{2-}$) and cyanides ($CN^-$).

  • Inductive Memosens Transmission: Non-contact, corrosion-free signal transfer eliminates signal loss and moisture-related connection issues.

  • Robust Mechanical Design: Integrated PPS housing and protective tip guard withstand abrasive media, high flow rates, and high mechanical impact.

Commercial Availability & Sourcing

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  • Condition: 100% Brand New & Genuine Factory Product

  • Availability: In Stock – Ready for Immediate Shipment

  • Logistics: Express Worldwide Delivery Options Available

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