Technical Data
CompareORP / Redox
| Measuring Principle | Sensor ORP / Redox |
| Application | Chemical industry, wastewater, industrial water, power plants, refuse incinerators |
| Installation | Retractable holder with ball valve |
| Characteristic | Open and closed tank, piping (min. DN80) |
| Design | Manual or pneumatic Manual or pneumatic ball valve Can be fully automated with CPC30 / 300 Integrated rinse chamber with connection G1/4" or NPT1/4" |
| Material | Seals: EPDM / FPM / perfluoroelastomer Electrode holder: PP / PEEK / PVDF Ball valve: PP / PVDF Inlet safety seal: PVDF, PTFE, Viton® Outlet safety seal: PVDF Rinse connection socket: PVDF |
| Dimension | Immersion depth: 71 to 207 mm (2.8 to 8.15 inch) |
| Process temperature | PA version: max. 80 °C (max. 176 °F) Stainless steel pressure cylinder: max. 120 °C (248 °F) |
| Process pressure | PA pressure cylinder: max. 6 bar (87 psi) Stainless steel pressure cylinder: max. 10 bar (145 psi) at 40 °C (104 °F) |
| Connection | Process connection DN50, ANSI 2" |
pH
| Measuring Principle | Potentiometric |
| Application | Chemical industry, wastewater, industrial water, power plants, refuse incinerators |
| Installation | Retractable assembly with ball valve |
| Characteristic | Open and closed tank, piping (min. DN80) |
| Design | Manual or pneumatic Manual or pneumatic ball valve Can be fully automated with CPC30 / 300 Integrated rinse chamber with connection G1/4" or NPT1/4" |
| Material | Seals: EPDM / FPM / perfluoroelastomer Electrode holder: PP / PEEK / PVDF Ball valve: PP / PVDF Inlet safety seal: PVDF, PTFE, Viton® Outlet safety seal: PVDF Rinse connection socket: PVDF |
| Dimension | Immersion depth: 71 to 207 mm (2.8 to 8.15 inch) |
| Process temperature | PA version: max. 80 °C (max. 176 °F) Stainless steel pressure cylinder: max. 120 °C (248 °F) |
| Process pressure | PA pressure cylinder: max. 6 bar (87 psi) Stainless steel pressure cylinder: max. 10 bar (145 psi) at 40 °C (104 °F) |
| Connection | Process connection DN50, ANSI 2" |
| Certificates, declarations and approvals | Inspection certificate 3.1 acc. to EN 10204 on demand |
Product Overview
The Cleanfit CPA474 retractable assembly is designed for applications requiring safe process isolation and for media that can corrode or contaminate stainless steel. It offers maximum operating convenience: sensors can be replaced, and the assembly even serviced, while the process is running. Optional electric or pneumatic control systems ensure automatic cleaning and calibration even under demanding process conditions.
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Benefits
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With stainless steel ball valve for safe and reliable process isolation even under harsh process conditions
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Suitable for corrosive media: wetted parts made of high-performance polymers (PP, PVDF, PEEK)
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Electrode cleaning and calibration without process interruption - saves maintenance time and costs
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Automatic cleaning function extends the service life of the electrode
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Various materials and process connections available for greater application flexibility
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Application areas
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The Cleanfit CPA474 is used for measurement in tanks and pipes:
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Chemical industry
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Wastewater / industrial water
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Power plants
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Waste incineration plants
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For pressures up to 10 bar (stainless steel cylindrical tanks) or 6 bar (PA cylindrical tanks).
Spare Parts & Accessories 70
70 spare parts · click to collapse
| Order code | Description | |
|---|---|---|
| 51512679 | Electrode guide | Details |
| 51512681 | Electrode guide | Details |
| 51512682 | Electrode guide | Details |
| 51512683 | Electrode guide | Details |
| 51512684 | Electrode guide | Details |
| 51512685 | Electrode guide | Details |
| 51503731 | CPA47x: retaining pin with handleKIT CPA47x:stop bolt with handle (1 pc.) | Details |
| 51503774 | CPA471/472 PA Cylinder BodyKIT CPA471/472 cylinder PA long | Details |
| 71042130 | CPA471/472 PA Cylinder Body | Details |
| 51503776 | CPA471 stainless steel bodyKIT CPA471 cylinder SS long | Details |
| 71042134 | CPA471/472 Cylinder Body | Details |
| 51503730 | CPA471/472 Pneumatic ConnectorKIT CPA471/472 pneu.connection G/8D6 10p | Details |
| 71329949 | CPA47X Spare Parts: Check Valve | Details |
| 51512690 | CPA474 cleaning chamber | Details |
| 51512691 | CPA474 cleaning chamber | Details |
| 51512692 | CPA474 cleaning chamber | Details |
| 51512693 | Kit CPA474 PP pressure-proof, rinsing chamber | Details |
| 51512694 | CPA474 cleaning chamber fittings and plugs, gaskets | Details |
| 51512695 | Kit CPA474 PEEK pressure-proof, rinsing chamber | Details |
| 51512699 | ball valve | Details |
Configurator / Comparison
Source: public information from the Endress+Hauser website
Manuals & Documents 7
All documents for this model7 documents · click to expand
Operating Instructions Cleanfit CPA474 English
Operating Instructions CleanFit P CPA 474 English
技术资料 Cleanfit CPA474 Chinese
Technical Information Topcal S CPC310 English
Technical Information Retractable Assembly Cleanfit CPA474 English
Technical Information Topcal S CPC310 English
Technical Information Retractable Assembly CleanFit P CPA 474 English
Case Studies
Municipal Wastewater Treatment · brackets — Application Case
Customer Profile
The typical setting in Municipal Wastewater Treatment is the inlet, biological and outlet stages of a municipal plant. The measuring point is brackets; the focus is mounting, fixation and position adjustment for instruments.
Key Difficulties
Conditions are high solids and corrosive fractions, with large diurnal flow swings and, on top of that, effluent parameters drift and probes foul with sludge and biofilm, which a standard configuration cannot handle for long. The design therefore starts with checking structural strength by material, corrosion class and load.
Implementation
The scope ran through the system components range: supplying as a full cabinet and signal-chain configuration. Technically it hinges on checking structural strength by material, corrosion class and load, and on these requirements: stable compliance with Grade 1A discharge limits and online data reporting.
Customer Benefit
In practice this means accurate mounting positions that remove measurement bias at the source, which cut the workload on the site maintenance team.
Food & Beverage · brackets — Application Case
Project Background
The project covers dosing, pasteurising, filling and CIP stages. The work centres on brackets and the core task is mounting, fixation and position adjustment for instruments.
Operating Challenges
The medium and duty are characterised by syrups, dairy and beverages that scale easily, under strict hygienic requirements, and frequent cleaning demands instruments that withstand hot CIP/SIP caustic cycles. So brackets cannot be specified generically — it calls for checking structural strength by material, corrosion class and load.
Solution
The Ainstru engineering team worked through the system components range: supplying as a full cabinet and signal-chain configuration. The configuration involves checking structural strength by material, corrosion class and load, with these requirements in view: food-safety and hygienic design per 3-A / EHEDG.
Results
Since start-up the system has run steadily; the practical result is accurate mounting positions that remove measurement bias at the source.
Chemical & Pharmaceutical · brackets — Application Case
Project Overview
The site is reactors, metering vessels and finished-product tanks. The customer wanted brackets properly configured on the existing plant, with the aim of mounting, fixation and position adjustment for instruments.
Technical Challenges
What actually causes trouble is highly corrosive media with solvents and crystallisation, partly in explosive atmospheres, and corrosion plus Ex protection shortens instrument life and makes downtime costly. All of this means the brackets configuration has to involve checking structural strength by material, corrosion class and load.
Configuration
Supply and installation were organised through the system components range: supplying as a full cabinet and signal-chain configuration. On site this meant checking structural strength by material, corrosion class and load, checked line by line against: Ex certification and GMP traceability of records.
Performance
After commissioning the outcome is accurate mounting positions that remove measurement bias at the source, and the readings are now used for process tuning.
Power & Energy · brackets — Application Case
Site Conditions
This is a Power & Energy customer whose plant is at boiler feedwater, turbine condensate and FGD/DeNOx systems. The main task was mounting, fixation and position adjustment for instruments.
The Problem
The difficulty lies in high temperature and pressure with both steam and saline water; at the same time drift under high temperature and pressure, with very costly unplanned outages. Specification therefore means checking structural strength by material, corrosion class and load.
What We Did
We took a system components range approach — supplying as a full cabinet and signal-chain configuration. Delivery was built around checking structural strength by material, corrosion class and load, with point-by-point checks on: compliance with power-industry codes and unit availability targets.
Operating Outcome
In service the system performs as intended — accurate mounting positions that remove measurement bias at the source, with routine maintenance falling noticeably.
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