A Durable Flow Assembly for pH and ORP Measurement
The Flowfit CPA240 provides a controlled installation point for pH and ORP electrodes in pipes and bypass lines. It is designed for industrial applications where the measuring point may be exposed to elevated temperature, pressure or aggressive process media.
Unlike a pH or ORP sensor, the CPA240 does not perform the measurement itself. It provides the mechanical housing and process connection required to position compatible electrodes correctly in the flowing medium.
Designed for Pipe and Bypass Installation
The CPA240 is specifically designed as a flow assembly, making it suitable for direct piping installations as well as bypass arrangements.
The flow-through design provides a defined measurement environment while allowing the sensors to be accessed from the assembly for service and recalibration.
Three Sensor Positions
The assembly provides three installation locations for 120 mm electrodes. This gives users flexibility when a measuring point requires more than one electrode or when additional sensor positions are needed for the selected configuration.
This multi-position design can also simplify the mechanical arrangement of several related measurement functions around one process connection.
Easy Sensor Installation and Removal
A practical advantage of the CPA240 is the accessibility of its sensors. Endress+Hauser specifically highlights that simple installation and removal of the sensors saves time during maintenance and recalibration.
This is particularly useful for industrial measuring points where pH or ORP electrodes require periodic cleaning, inspection or calibration.
PVDF or Stainless Steel Construction
The flow vessel is available in PVDF or stainless steel 1.4404, allowing the assembly material to be selected according to the process environment. O-ring materials include EPDM, Viton, Chemraz and Fluoraz, depending on configuration.
This material flexibility makes the CPA240 suitable for a wide range of chemical and industrial applications.
Designed for Higher Temperatures and Pressures
The CPA240 is intended for demanding process conditions.
The official specifications give a maximum process temperature of 120°C for the PVDF version and 150°C for the stainless-steel version. The stainless-steel version supports up to 10 bar, while the PVDF version is rated up to 8 bar at 50°C.
The actual permissible temperature and pressure combination depends on the selected material and seal configuration.
Flexible Process Connections
The CPA240 is available with different process connection options, helping it adapt to different piping standards and installation requirements.
The assembly can therefore be integrated into existing process piping or bypass systems without requiring the sensor itself to provide the complete mechanical process connection.
Spray Cleaning Connection
The CPA240 includes a G1/2" thread connection for spray cleaning, allowing a compatible cleaning arrangement to be integrated into the flow assembly.
This can be useful for applications where sensor cleaning is part of routine maintenance.
Suitable for Demanding Industrial Applications
Endress+Hauser lists applications including drinking water treatment, boiler feedwater and ultrapure water plants, cooling-water circuits, fertilizer production, sugar production, gas scrubbers and petrochemical plants.
The combination of robust construction, multiple sensor positions and flexible installation makes the CPA240 suitable for both utility and process applications.
Key Features
Flow assembly for pH and ORP sensors
Designed for pipe and bypass installation
Up to 3 × 120 mm electrodes
PVDF or stainless steel 1.4404 flow vessel
O-ring options including EPDM, Viton, Chemraz and Fluoraz
Suitable for demanding temperature and pressure conditions
PVDF process temperature up to 120°C
Stainless-steel process temperature up to 150°C
Stainless-steel process pressure up to 10 bar
PVDF pressure up to 8 bar at 50°C
G1/2" connection for spray cleaning
Easy sensor installation and removal
Designed to simplify maintenance and recalibration
Suitable for horizontal or bottom-up flow direction
Available for a range of industrial process applications
Typical Applications
Chemical Processing
The CPA240 can be used for pH and ORP measurement in chemical processes where the assembly must withstand aggressive media and elevated process conditions.
Petrochemical Plants
Its robust construction and flow-through design make it suitable for selected petrochemical applications requiring reliable pH or ORP sensor installation.
Cooling-Water Circuits
The assembly can be installed in cooling-water systems where continuous pH or ORP monitoring is required.
Boiler Feedwater and Ultrapure Water
Endress+Hauser lists boiler feedwater and ultrapure water plants among the application areas for the CPA240.
Drinking Water Treatment
The CPA240 can provide the mechanical installation point for pH or ORP sensors in water-treatment systems.
Fertilizer Production
The assembly is also listed for fertilizer-production applications where chemical resistance and reliable sensor installation are important.
Sugar Production
The CPA240 can be used in suitable sugar-processing applications requiring pH or ORP measurement in process piping.
Gas Scrubbers
Gas-scrubbing systems can require pH monitoring of circulating or treated liquids. The CPA240 provides a flow-through installation arrangement for compatible sensors.
FAQ
What is the Endress+Hauser Flowfit CPA240?
The CPA240 is a flow assembly for pH and ORP sensors. It provides the mechanical housing and process connection for installing compatible electrodes in pipes or bypass lines.
Is the CPA240 a pH sensor?
No. The CPA240 is an assembly, not a measuring sensor. A compatible pH or ORP electrode must be installed in the assembly.
How many sensors can the CPA240 hold?
The CPA240 provides three installation positions for 120 mm electrodes.
Where is the CPA240 installed?
It is designed for pipe and bypass applications, unlike the CPA140, which is an immersion assembly for tank installation.
What materials are available?
The flow vessel is available in PVDF or stainless steel 1.4404. Several O-ring materials are also available depending on the selected configuration.
What is the maximum process temperature?
The maximum process temperature is 120°C for the PVDF version and 150°C for the stainless-steel version. With EPDM sealing, the specified maximum is 140°C.
What is the maximum process pressure?
The stainless-steel version is rated up to 10 bar. The PVDF version is rated up to 8 bar at 50°C.
Does the CPA240 support sensor cleaning?
Yes. The assembly provides a G1/2" thread connection for spray cleaning.
Can the sensors be removed easily?
Yes. Endress+Hauser specifically states that the CPA240 allows simple sensor installation and removal, helping save time during maintenance and recalibration.
What is the difference between CPA240 and CPA140?
The main difference is the installation arrangement:
CPA240: Flow assembly for pipes and bypass lines
CPA140: Immersion assembly for closed tanks
The CPA240 is therefore the more appropriate product when the pH/ORP sensor needs to be installed directly in a flowing process line or bypass.
