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E+H Memosens CPS92E Digital ORP Sensor
Memosens CPS92E
The Endress+Hauser Memosens CPS92E is a heavy-duty digital ORP sensor specifically engineered for oxidation-reduction potential monitoring in heavily contaminated media, fibrous suspensions, and aggressive chemical processes. Featuring an open aperture reference system, a poison-resistant ion trap, and Memosens 2.0 digital technology, it ensures maximum clog resistance and stable inductive data transmission in challenging plant environments.
Heavy-Duty Digital ORP Monitoring in Clogging Media with Endress+Hauser Memosens CPS92E
The Endress+Hauser Memosens CPS92E is a digital ORP (redox) electrode specifically engineered for extreme operational environments where traditional ceramic diaphragms fail due to severe fouling, solids deposition, or chemical poisoning. Ideal for industrial wastewater treatment, pulp and paper bleaching, mining ore leaching, electroplating effluent, and chemical synthesis, the CPS92E delivers reliable, drift-free redox potential tracking under demanding process conditions.
Open Aperture Diaphragm & Poison-Resistant Gel Reference
Conventional ORP sensors in sticky or solids-rich fluids frequently suffer from diaphragm clogging, leading to open-circuit measurements, signal noise, and false alarms. The Memosens CPS92E overcomes this fundamental industry hurdle by using an open aperture junction (open holes) combined with a highly stable gel reference electrolyte. This design enables direct contact between the liquid process medium and the reference system, eliminating clogging caused by suspended fibers, mineral scaling, or oily emulsions. Furthermore, the double-chamber reference structure includes a specialized ion trap that blocks hostile ions (such as sulfides, cyanides, and heavy metals) from poisoning the $Ag/AgCl$ lead, significantly extending sensor service life.
High Process Resilience & Versatile Installation
Featuring a heavy-duty glass shaft, a platinum measuring element, and a standard Pg 13.5 process thread, the CPS92E installs easily into standard immersion, flow, or retractable assemblies. With a wide operating pressure rating up to 13 bar (188.5 psi) and temperature tolerance up to 110 °C (230 °F), the CPS92E delivers reliable operational endurance in aggressive industrial streams.
Applications
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Industrial Wastewater & Effluent: Toxic chemical neutralization, chromate reduction, cyanide destruction, and oily effluent treatment.
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Pulp & Paper Industry: Paper stock suspensions, cellulose bleaching circuits, and black liquor processing.
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Mining & Chemical Processing: Mineral slurry leaching, metal precipitation, electroplating bath treatment, and acidic waste streams.
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Utilities & Primary Processing: Flue gas desulfurization (FGD) scrubbers and heavy industrial washdown sumps.
Technical Specifications
| Parameter / Feature | Specification Details |
| Measuring Principle | Digital ORP / Redox sensor |
| Sensor Technology | Memosens 2.0 digital technology (Contactless inductive connection) |
| Measuring Range | -1500 mV to +1500 mV |
| Measuring Element | Platinum measuring element |
| Junction / Diaphragm | Open aperture diaphragm (open hole junction) |
| Reference System | Double-chamber gel reference with ion trap (poison-resistant) |
| Temperature Sensor | Integrated NTC 30K |
| Process Temperature | 0 °C to 110 °C (32 °F to 230 °F) |
| Process Pressure (Abs.) | 0.8 bar to 13 bar (11.6 psi to 188.5 psi) |
| Shaft Dimensions | Diameter: 12 mm | Lengths: 120 mm, 225 mm, 360 mm, 425 mm |
| Process Connection | Pg 13.5 thread connection |
| Wetted Materials | Glass shaft, Platinum, FKM O-ring |
| Ingress Protection | IP68 (10 m water column, 25 °C, 45 days) |
| Hazardous Approvals | ATEX, IECEx, CSA C/US, NEPSI, INMETRO, Japan Ex |
FAQ
Q1: Why choose the Memosens CPS92E over standard ceramic diaphragm ORP sensors?
Answer: The CPS92E uses an open aperture junction instead of porous ceramic, making it virtually immune to clogging in media containing heavy suspended solids, fibers, or oily emulsions.
Q2: How does the ion trap in the CPS92E extend sensor life?
Answer: The ion trap inside the double-chamber reference system traps chemical poisons (such as hydrogen sulfide and heavy metals), preventing them from reaching and degrading the internal reference element.
Q3: What are the benefits of Memosens 2.0 digital technology?
Answer: Memosens 2.0 provides inductive, contactless signal transfer that resists moisture and corrosion, stores calibration data internally for fast lab pre-calibration, and supports predictive diagnostics.
Q4: Is the CPS92E certified for hazardous locations?
Answer: Yes, the CPS92E holds comprehensive explosion-proof certifications including ATEX, IECEx, CSA C/US, and NEPSI for installation in Zone 0, 1, and 2 environments.
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