Endress Hauser Manual or automatic retractable assembly Cleanfit CPA871 CPA875 CPA472D CPA473 CPA474
The Cleanfit CPA871, CPA875, CPA472D, CPA473, and CPA474 are manual or automatic retractable assemblies from Endress+Hauser, designed for the safe installation, cleaning, and calibration of pH, ORP, oxygen, and NIR sensors while the process is running. Each model is tailored to specific industry requirements, from hygienic life sciences applications to heavy-duty chemical and wastewater processes.
Key Features and Benefits
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Highest Operational Safety: The assemblies feature intelligent functions that prevent the sensor guide from moving into the process when no sensor is installed, and prevent the sensor from being removed while in the measuring position. This ensures no process medium escapes during operation, cleaning, or calibration.
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No Process Interruption: Sensors can be replaced, cleaned, and calibrated while the process is running, saving significant maintenance time and costs. The optional electric or pneumatic control system enables fully automated cleaning and calibration cycles.
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Application-Specific Designs: The CPA871 is the flexible workhorse for water/wastewater and chemical industries. The CPA875 is the hygienic specialist for food, biotech, and life sciences, fully certified (EHEDG and ASME BPE) with FDA-compliant materials. The CPA472D is the heavy-duty assembly for aggressive chemical media at high pressures and temperatures up to 140°C and 16 bar. The CPA473 handles fibrous or sticky media with patented sleeve seals and integrated scrapers. The CPA474 is designed for media that could affect stainless steel, with only polymers in contact with the medium.
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High Modularity and Flexibility: A wide variety of wetted materials, process connections, and drive types (manual or pneumatic) enable precise adaptation to individual process requirements.
Technical Specifications (at a Glance)
| Specification | CPA871 | CPA875 | CPA472D | CPA473 | CPA474 |
|---|---|---|---|---|---|
| Primary Application | Water/wastewater, chemical | Food & beverage, biotech, life sciences | Chemical, power, biodiesel | Fibrous/sticky media, paper, wastewater | Corrosive media, chemical, wastewater |
| Process Temperature | –10 to 140 °C (SS/PEEK/Alloy) | –10 to 140 °C | 0 to 140 °C | PA: max. 80 °C; SS: up to 100 °C | PA: max. 80 °C; SS: max. 120 °C |
| Process Pressure | 16 bar up to 140 °C (SS) | Pneumatic: 16 bar; Manual: 8 bar | Pneumatic: 10 bar; Manual: 4 bar | PA: 6 bar; SS: 10 bar | PA: 6 bar; SS: 10 bar at 40°C |
| Wetted Materials | SS 1.4404, PEEK, PVDF, Alloy C22, Titanium | Stainless steel 1.4435 | PEEK, PVDF, Alloy C22, SS 1.4571 | SS 1.4404, PVDF, PTFE | PP, PEEK, PVDF |
| Drive Type | Manual or pneumatic | Manual or pneumatic | Manual or pneumatic | Manual or pneumatic | Manual or pneumatic |
| Certifications | Hazardous area options | EHEDG, ASME BPE, FDA, USP Class VI | PED, Ex protection available | 3.1 EN 10204 | 3.1 EN 10204 |
The Cleanfit retractable assembly family delivers safe, reliable sensor handling with application-specific designs, modular flexibility, and the ability to maintain measurement points without process interruption.
Endress Hauser Manual or automatic retractable assembly Cleanfit CPA871 CPA875 CPA472D CPA473 CPA474
The Cleanfit CPA871, CPA875, CPA472D, CPA473, and CPA474 are manual or automatic retractable assemblies from Endress+Hauser, designed for the safe installation, cleaning, and calibration of pH, ORP, oxygen, and NIR sensors while the process is running. Each model is tailored to specific industry requirements, from hygienic life sciences applications to heavy-duty chemical and wastewater processes.
All assemblies share a core principle of highest operational safety. Intelligent functions prevent the sensor guide from moving into the process when no sensor is installed, and prevent the sensor from being removed while in the measuring position. This ensures no process medium escapes during operation, cleaning, or calibration. Sensors can be replaced, cleaned, and calibrated while the process is running, saving significant maintenance time and costs. The optional electric or pneumatic control system enables fully automated cleaning and calibration cycles.
The Cleanfit CPA871 is the flexible workhorse for water and wastewater treatment and the chemical industry. It handles process temperatures from –10 to 140°C and pressures up to 16 bar at 140°C with stainless steel wetted materials. Available wetted materials include stainless steel 1.4404, PEEK, PVDF, Alloy C22, and Titanium, with hazardous area options available.
The Cleanfit CPA875 is the hygienic specialist for food and beverage, biotechnology, and life sciences applications. It is fully certified with EHEDG and ASME BPE approvals, and all wetted materials are FDA-compliant and USP Class VI listed. The assembly handles process temperatures from –10 to 140°C, with pneumatic drive rated to 16 bar and manual drive rated to 8 bar. The wetted material is stainless steel 1.4435.
The Cleanfit CPA472D is the heavy-duty assembly for aggressive chemical media at high pressures and temperatures. It handles process temperatures from 0 to 140°C and pressures up to 10 bar (pneumatic) or 4 bar (manual). Wetted materials include PEEK, PVDF, Alloy C22, and stainless steel 1.4571. It is PED compliant with Ex protection available.
The Cleanfit CPA473 handles fibrous or sticky media with patented sleeve seals and integrated scrapers. It is suitable for paper, wastewater, and other challenging applications. Process temperature ranges from a maximum of 80°C for PA versions to 100°C for stainless steel versions, with pressures up to 6 bar (PA) or 10 bar (SS). Wetted materials include stainless steel 1.4404, PVDF, and PTFE, with 3.1 EN 10204 material certification available.
The Cleanfit CPA474 is designed for media that could affect stainless steel, with only polymers in contact with the medium. It is suitable for corrosive media, chemical, and wastewater applications. Process temperature ranges from a maximum of 80°C for PA versions to 120°C for stainless steel versions, with pressures up to 6 bar (PA) or 10 bar at 40°C (SS). Wetted materials include PP, PEEK, and PVDF, with 3.1 EN 10204 material certification available.
The Cleanfit retractable assembly family delivers safe, reliable sensor handling with application-specific designs, modular flexibility, and the ability to maintain measurement points without process interruption.