CleanFit CPA875

Summary

Product Identification

The Endress+Hauser Cleanfit CPA875 is a modular retractable process assembly designed for in-line measurement with standard 12 mm sensors. It is suitable for sterile and hygienic applications, including parameters such as pH, ORP, oxygen, and NIR.

Application Industries

• Food and beverages
• Biotechnology
• Life sciences
• Special chemicals

Key Benefits

• High availability with minimal maintenance.
• Reliable measurements and accurate results.
• Enhanced product quality.
• Modular design for investment security.
• EHEDG-certified assembly (process connection and service chamber).
• Certified to FDA and USP Class VI.
• Available with 3-A certificate.

Functionality

The Cleanfit CPA875 allows for sensor removal, cleaning, sterilization, or calibration/adjustment without interrupting the process. It can be installed in both vessels and pipes.

Design and Options

• Drive Type: Manual or pneumatic drive.
  • Manual drive supports process pressures up to 8 bar (116 psi).
  • Pneumatic drive supports process pressures up to 16 bar (232 psi).
• Chamber Systems:
  • Single-chamber system (service chamber).
  • Double-chamber system (inner and front service chambers).
• Electrode Guide Strokes:
  • 36 mm (e.g., for flow housing).
  • 78 mm (e.g., for installation in vessels).
• Process Connections: Various common process connections are available, including Clamp, Aseptic DIN 11864, BioControl, BioConnect, Dairy fitting, ISO228 Thread, and Varivent.

Safety Features

• Locking Mechanism: Prevents movement from service to measuring position if the sensor is not installed.
• Limit Position Locking:
  • Pneumatic drive: Remains in the selected position if compressed air fails.
  • Manual drive: Features an unlocking button for position locking.
• Sensor Protection: Protection cap prevents sensor removal in the measuring position.
• Non-rotating Sensor Guide: Ensures precise sensor positioning.
• Limit Position Detection: Inductively detects service and measuring positions (can be retrofitted for pneumatic drives).

Cleaning and Sterilization

• Medium drains completely from chambers when mounted at an angle up to 15° to the horizontal.
• Special aseptic seals are available without cleanable openings (not for NA process connection).
• EHEDG-certified for cleanability and sterilizability.
• Double-chamber system offers contamination-free insertion/retraction and safe separation between process and service chambers.

Materials

• Seals: EPDM-FDA (USP Class VI), FKM-FDA (USP Class VI), FFKM-FDA (USP Class VI). All FDA-certified and meet USP Class VI.
• Wetted Parts (Immersion Tube, Process Connection, Service Chamber): Stainless steel 1.4435 (AISI 316L) with surface roughness Ra < 0.76 µm or optionally Ra < 0.38 µm (immersion tube only).
• Non-wetted parts: Stainless steel 1.4301 (AISI 304) or 1.4404 (AISI 316L), plastics PPS CF15, PBT, PP.

Operating Limits

• Ambient Temperature Range: -10 to +70 °C (+10 to +160 °F).
• Storage Temperature: -10 to +70 °C (+10 to +160 °F).
• Process Temperature Range: –10 to 140 °C (14 to 284 °F).
• Process Pressure Range:
  • Pneumatic drive: 16 bar (232 psi) up to 140 °C (284 °F).
  • Manual drive: 8 bar (116 psi) up to 140 °C (284 °F).

Mechanical / Hydraulic

• Weight:
  • Pneumatic drive: 3.8 to 6 kg (8.4 to 13.2 lbs).
  • Manual drive: 3 to 4.5 kg (6.6 to 9.9 lbs).
• Rinse Chamber Volumes:
  • Single chamber, short stroke: 20.94 cm³ (1.28 in³) max., 10.51 cm³ (0.64 in³) min.
  • Single chamber, long stroke: 42.97 cm³ (2.62 in³) max., 20.77 cm³ (1.27 in³) min.
  • Double chamber (front): 18.53 cm³ (1.13 in³) max., 9.80 cm³ (0.6 in³) min.
  • Double chamber (rear): 77.49 cm³ (4.72 in³) max., 47.04 cm³ (2.87 in³) min.
  • Double chamber (total): 96.02 cm³ (5.87 in³) max., 56.84 cm³ (3.47 in³) min.
• Necessary Mounting Distance for Sensor Replacement (XA):
  • 425 mm (16.73") for 225 mm sensors.
  • 610 mm (24.02") for 360 mm sensors.

Electrical

• Limit Position Switches:
  • Switching element function: NAMUR NC contact (inductive).
  • Switching distance: 1.5 mm (0.06").
  • Nominal voltage: 8 V.
  • Switching frequency: 0 to 5000 Hz.

Certificates and Approvals

• CRN (Canadian Registration Number)
• Pharma CoC
• Biological reactivity (USP Class VI)
• EHEDG (TYP EL Class I, and EL aseptic class I for double-chamber)
• ASME BPE Standard 2012 compliance
• FDA listed materials
• EC VO 1935/2004 compliance

Accessories

A range of accessories is available, including weld-in adapters, dummy plugs, sensor dummies, seal kits, cables for limit switches, installation tools, and lubricants. Device-specific sensors for pH, ORP, ISFET, conductivity, oxygen, and NIR absorption are also listed.

Disclaimer: This extraction may miss figures, footnotes, or revisions. Contractual data must match the OEM PDF revision used on the project.

Official datasheet (PDF)

Lenntech datasheet mirror