Endress+hauser CPA871 Manual or automatic retractable assembly Cleanfit
- Application: Retractable Sensor Assembly
- Sensor Type: pH, ORP, O2, NIR
- Process Temp: -10 to 140°C
- Material: Steel, PEEK, PVDF
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Description
Endress+Hauser CPA871: Safety in Demanding Applications
Highest Operational Safety in Diverse Applications
The Cleanfit CPA871 represents a pinnacle of operational safety, meticulously engineered to perform flawlessly in both standard and exceptionally demanding industrial applications. Its design incorporates intelligent functions that are crucial for preventing any leakage of medium during critical operations such as sensor retrieval, cleaning, or calibration. This proactive approach ensures optimal protection for both the integrity of the process and, most importantly, the safety of the operating personnel. The CPA871’s robust construction and thoughtful features make it a reliable choice across a multitude of challenging industrial environments.
Retractable Assembly Adapts to Your Process
A standout feature of the Cleanfit CPA871 is its highly adaptable retractable assembly, designed to seamlessly integrate with your specific application requirements. Whether your process demands long immersion depths in sticky or viscous media, involves aggressive chemical environments, or operates within hazardous areas, the CPA871 can be configured to meet these challenges. Users have the flexibility to choose from a variety of materials and specifications, ensuring the right fit for optimal performance and durability, irrespective of the environmental severity or media characteristics.
Developed for Highest Safety Across Key Industries
The CPA871 has been specifically developed with the highest safety standards in mind, making it an indispensable component across several critical industries. It delivers exceptional performance and peace of mind in the demanding conditions of the water and wastewater industry, including specialized seawater applications. Its robust design also makes it perfectly suited for the chemical industry, the rigorous environments of the oil and gas sector, and the vital power and energy industry. Furthermore, its comprehensive safety features extend to safe operation in designated hazardous areas.
Benefits: Intelligent Functions for Enhanced Safety
The CPA871 offers a suite of intelligent functions that significantly enhance operational safety. A critical feature prevents the assembly from inadvertently moving into the process without a sensor securely in place. Equally important, it safeguards against the sensor moving out of the process while it is still in its measuring position. This intelligent design minimizes the risk of product loss, environmental contamination, and personnel exposure, ensuring continuous and safe operation, thereby protecting both assets and human resources.
Robust Design with Optional Immersion Chamber
The CPA871 boasts a remarkably robust assembly design, featuring a steel support housing that guarantees exceptional mechanical stability and long-term durability in harsh industrial settings. For processes involving particularly sticky media, which can often cause sensor fouling and measurement inaccuracies, an optional immersion chamber is available. This clever addition effectively eliminates problems associated with sticky media, ensuring consistent and reliable sensor performance and extending maintenance intervals, leading to greater process uptime.
Flexible Adaption with Wide Material and Connection Choices
Flexibility is a cornerstone of the CPA871’s design, allowing for wide adaptation to diverse process requirements. A comprehensive variety of process connections and wetted materials are available, ensuring compatibility with virtually any industrial setup. This includes specialized options for highly corrosive media, where material selection is paramount for longevity and safety, and configurations suitable for hazardous areas, where specific compliance is essential. This adaptability makes the CPA871 a versatile solution for complex industrial measurement needs.
Compatibility with pH, ORP, Oxygen, and NIR Sensors
The Cleanfit CPA871 is a versatile retractable assembly designed to accommodate a range of critical analytical sensors, specifically those for pH, ORP, oxygen, and NIR measurements. It is compatible with sensors featuring a standard diameter of 12 mm and available in common lengths of 120, 225, and 360 mm. This broad sensor compatibility allows industries to standardize on a single, highly safe, and robust retractable assembly for multiple analytical parameters, simplifying inventory management and maintenance procedures across various applications.
Specifications
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Measuring principle
Potentiometric
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Application
Water and wastewater including sea water, chemical industry, oil and gas, electricity and energy, hazardous areas, primaries and metals
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Installation
Retractable process assembly
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Characteristic
Open and closed tanks, piping
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Design
Robust and safe style
Manual or pneumatic -
Material
Seals: EPDM, FPM (Viton) or FFKM
Immersion tube, process connection, service chamber: Stainless steel 1.4404 Ra < 0.76, PEEK,
Alloy C22 Ra <0.76, PVDF, conductive PVDF -
Dimension
Immersion depth: 32.2 to 188.6 mm (1.27 to 7.40 inch), depending on process adaption
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Process temperature
-10 to 140 °C (14 to 284 °F) for all materials except PVDF and conductive PVDF
-10 to 100 / 90 °C (14 to 212 / 194 °F) for PVDF and conductive PVDF materials -
Process pressure
Stainless steel, Alloy C22, PEEK:
16 bar up to 140 °C (232 psi up to 284 °F)
PVDF, conductive PVDF:
Basic version: 16 bar up to 100 °C (232 psi up to 212 °F)
Immersion chamber version:
4 bar to 90 °C (58 psi up to 194 °F) -
Connection
Clamp 2″, ISO2852, ASME BPE-2012, Clamp 2½”, Flange DN 40, DN50, DIN65, DN80, EN1092-1, ASME B16.5, 10K50, JIS B2220, 10K80, Thread NPT 1½”, Thread ISO 228 G1¼








