E+H Orbipac CPF82 Analog ORP Sensor

Heavy-Duty Industrial ORP Monitoring with Endress+Hauser Orbipac CPF82

The Endress+Hauser Orbipac CPF82 is an all-in-one analog ORP electrode engineered specifically for demanding industrial water treatment, mineral processing, flue gas scrubbers, and heavy chemical effluent monitoring. Operating in process media characterized by high flow rates, elevated suspended solids, and chemical contaminants, the CPF82 provides a cost-effective, durable solution for continuous redox potential evaluation.

All-In-One Compact Body & Clog-Resistant Design

Unlike delicate glass lab sensors, the Orbipac CPF82 features a rugged compact body crafted with integrated NPT 3/4″ male threads on both the top and process ends. This versatile design allows direct inline installation into process piping or top-down immersion into open basins, tanks, and sumps. To tackle heavy slurries and fouling media, the sensor offers a choice of an extended dome bulb or a completely flat membrane surface. The flat membrane leverages fluid velocity across the sensor face to continuously sweep away debris and abrasive particles, preventing cake buildup and reducing sensor cleaning frequency.

Poison-Resistant Reference System & Integrated Temperature Sensor

In industrial wastewater and mining circuits, reference electrode poisoning from sulfides, cyanides, or heavy metals is a primary cause of sensor drift. The CPF82 combats this through a double-chamber reference system containing a gel electrolyte and an internal ion trap, shielding the reference element from chemical degradation. Additionally, an integrated Pt100 temperature sensor provides real-time temperature tracking for simultaneous process monitoring and signal compensation in connected transmitters.

Key Performance Features & Technical Advantages

• Rugged All-In-One Housing: Built-in NPT 3/4″ threads simplify direct inline pipe mounting, bypass installation, or tank immersion.

• Fouling-Resistant Flat Membrane: Optional flat-surface glass and large porous PTFE diaphragm prevent solids buildup in slurries and paper pulp.

• Double-Chamber Reference System: Protected against chemical poisoning by sulfides, heavy metals, and organic contaminants for extended service life.

• Integrated Pt100 Temperature Sensor: Delivers simultaneous temperature measurement for complete process oversight.

• High Flow & Mechanical Strain Tolerance: Heavy-duty body withstands high pressure, turbulent flow, and abrasive particle impacts.

• Universal Analog Compatibility: Easily integrates into standard industrial multi-parameter transmitters and DCS analog input cards.

Reduced Total Cost of Ownership in Severe Applications

By combining mechanical abrasion resistance with a self-cleaning physical layout, the Orbipac CPF82 lowers routine maintenance costs, minimizes sensor replacement cycles, and delivers continuous, drift-free ORP tracking across challenging industrial processes.

 Applications 

• Industrial Wastewater & Effluent Control: Detoxification of electroplating baths, cyanide destruction, chromate reduction, and neutralization basins.

• Mining & Mineral Processing: Flotation processes, leaching circuits, tailings treatment, and ore slurry monitoring.

• Power Generation & Utilities: Flue gas desulfurization (FGD) scrubbers, cooling tower water monitoring, and intake water treatment.

• Pulp, Paper & Primary Metals: Process water conditioning, bleaching circuits, and heavy industrial washdown sumps.

Technical Specifications 

Parameter / Feature	Specification Details
Measuring Principle	Analog ORP (Oxidation-Reduction Potential / Redox) sensor
Measuring Range	-1500 mV to +1500 mV
Measuring Element	High-purity Platinum ring electrode
Temperature Sensor	Integrated Pt100 resistance element
Membrane Options	Flat glass membrane (self-cleaning) or heavy-duty dome bulb
Diaphragm Type	Large annular porous PTFE diaphragm
Reference System	Double-chamber gel reference with ion trap
Process Temperature	0 °C to +80 °C (32 °F to +176 °F)
Process Pressure (Abs.)	Up to 10 bar (145 psi) at 20 °C
Process Connections	Integrated NPT 3/4″ top and bottom threads
Wetted Materials	PPS (Polyphenylene sulfide), Glass, Platinum, PTFE, EPDM / Viton
Ingress Protection	IP68 (NEMA 6) – Submersible

FAQ 

Q1: What installation options does the Orbipac CPF82 support?

Answer: The CPF82 features integrated NPT 3/4″ threads at both ends, allowing direct screw-in inline pipe mounting, bypass flow assembly insertion, or top-down immersion into open tanks and basins.

Q2: How does the flat membrane option benefit high-solids applications?

Answer: The flat glass membrane surface allows process fluid velocity to sweep across the sensor face, naturally removing particles and preventing solid cake buildup in slurries or wastewater.

Q3: What protects the CPF82 from chemical reference poisoning?

Answer: It utilizes a double-chamber reference system with a gel electrolyte and an integrated ion trap that blocks hostile ions (like silver-poisoning sulfides) from reaching the reference element.

Q4: Is the CPF82 compatible with standard analog liquid analysis transmitters?

Answer: Yes, the CPF82 generates a standard analog ORP signal with a Pt100 temperature output, making it compatible with standard multi-parameter process transmitters.

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