The CYA680 is a flow assembly from Endress+Hauser, providing a simple solution for in-line pH and conductivity measurement in hygienic and sterile applications. Designed for Clean-in-Place and Sterilization-in-Place, it is particularly suited to small pipe diameters, offering maximum safety for high-quality products.

The assembly’s core advantage is its optimization for small nominal diameters. The flow hole diameter ranges from 5 mm to 45 mm, precisely matching the clamp diameter, making it particularly suitable for applications with strict pipe size requirements such as chromatography, filtration, and reverse osmosis. The small-volume design enables rapid measured value acquisition, thereby optimizing product yield. The assembly features a compact design with a face-to-face length of 82.55 mm, equipped with clamp connections (0.25″ to 2″) for easy installation in piping systems.

In terms of hygiene and compliance, the CYA680 performs excellently. The assembly is suitable for Clean-in-Place (CIP) and Sterilization-in-Place (SIP), ensuring process continuity and product safety. It is certified to USP Class VI for biocompatibility, meeting the stringent requirements of the life sciences industry. Seals are FDA-approved, and the hygienic electropolished surface achieves a roughness of Ra = 0.38 µm (15 µin), effectively preventing microbial growth and product contamination.

The CYA680 supports simultaneous installation of two sensors, accommodating one pH electrode (CPS71D-TU) and one Memosens CLS82D conductivity sensor to meet multi-parameter measurement requirements. The holder material is available in stainless steel and PVDF, with the PVDF version suitable for corrosive media. Seal materials include EPDM, Kalrez, Viton, or Teflon-coated Viton, all FDA-approved to suit different process media and temperature conditions.

The process temperature can reach up to 130 °C (266 °F). Regarding process pressure, the stainless steel version supports up to 16 bar, while the PVDF version supports up to 4 bar. The assembly is supplied with a material certificate 3.1 EN 10204 to meet quality traceability requirements. For routine maintenance, O-rings should be replaced at least every 12 months. Cleaning agents should be selected according to the type of contamination—for example, hot water or alkaline surfactant media for grease and oil contamination, and approximately 3% hydrochloric acid solution for scale deposits.

The CYA680 flow assembly provides a reliable, hygienic solution for pH and conductivity measurement in small-diameter piping for the life sciences and chemical industries, combining small-volume fast measurement, CIP/SIP compatibility, and strict regulatory compliance to ensure safe production of high-quality products.

The Ceragel CPS71 and Orbipore CPS91 are analog compact pH sensors from Endress+Hauser, designed for potentiometric pH measurement in demanding industrial applications.

The Ceragel CPS71 is the analog specialist for pH measurement in sterile and hygienic applications. Its state-of-the-art gel is poison-resistant and guarantees stable measurement even in flowing media or low conductivity. The sensor is designed for hygienic and sterile applications including fermenters, biotechnology, life sciences, and the food industry, as well as process technology and monitoring of processes with quickly changing pH values and high proportions of electrode poisons such as H2S.

The CPS71 features an advanced gel technology with ceramic diaphragm and ion trap. The ion trap prevents poisoning of the reference, ensuring long sensor lifetime even in demanding media. The sensor is sterilizable and autoclavable up to 140°C, CIP/SIP compatible, and maintains high accuracy throughout its service life. It resists strong acids and bases and high organic loads, and features certified biocompatibility with no cytotoxicity. The sensor is free from animal-based materials and acrylamide, ensuring highest product safety. A version with pressurized reference (6 bar) is available specifically for fermentation processes, and an upside-down installation version is also offered.

The CPS71 has a measuring range of pH 0–14, with process temperature from –15 to +140°C and process pressure up to 13 bar. The sensor has a diameter of 12 mm and is available in shaft lengths of 120, 225, 360, and 425 mm. It connects via a TOP68 connection head and is rated IP68 for ingress protection. Optional integrated Pt100 or Pt1000 temperature sensors are available. The sensor holds ATEX, FM, and CSA approvals for hazardous areas, along with 3A and biocompatibility certifications.

The Orbipore CPS91 is the analog specialist for pH measurement in fibrous media or media with a high content of suspended solids such as dispersions, precipitation reactions, or emulsions. The open aperture prevents fouling and guarantees the most reliable measurement under extreme process conditions. The sensor is suitable for chemical processes, pulp and paper industry, flue gas cleaning, and contaminated media applications.

The CPS91 features an open aperture design with double gel reference. The stabilized gel filling provides low maintenance and long service life, and the sensor is not affected by fluctuations in pressure and temperature. The measuring principle is designed for media with a minimum conductivity greater than 500 µS/cm. The sensor delivers rapid response and reliable performance even in heavily soiled media.

The CPS91 has a measuring range of pH 0–14, with a maximum process temperature of 110°C and maximum process pressure of 10 bar. The sensor has a diameter of 12 mm and is available in shaft lengths of 120, 225, 360, and 425 mm. It connects via a TOP68 plug-in head and is rated IP68 for ingress protection. Optional integrated Pt100 or Pt1000 temperature sensors are available. The sensor holds ATEX, FM, and CSA approvals for hazardous areas.

The Ceragel CPS71 and Orbipore CPS91 deliver reliable, application-specific analog pH measurement, combining durable construction, long-term stability, and resistance to the specific challenges of their respective process environments.

The Purisys CPF201 and Orbipac CPF81 are analog compact pH sensors from Endress+Hauser, designed for the potentiometric measurement of pH in liquid analysis applications.

The Purisys CPF201 is the analog specialist for pure and ultrapure water. Its integrated stainless steel assembly provides stable and flow-independent measurement at the lowest conductivities, ensuring optimum water quality and the highest safety for products and assets. The sensor is specifically engineered for applications including boiler feedwater monitoring, power plant applications, and pharmaceutical water for injection (WFI). The measuring range is pH 1–13 for conductivities below 100 µS/cm, with a process temperature range of 2 to 75 °C and a maximum process pressure of 3 bar.

The CPF201 features a glass-gel compact electrode with a patented porous PTFE reference junction and potassium chloride (KCl) salt storage. This design eliminates flow dependency errors, ensuring stable pH readings and response even at the lowest conductivities. The electrode is installed in a stainless steel boundary surface within a stainless steel flow assembly, enabling potential-free measurements in ultrapure water. The sensor connects via a TOP68 connection head or fixed cable connection and is rated IP68 for ingress protection. An optional integrated Pt100 or Pt1000 temperature sensor is available.

The Orbipac CPF81 is the robust analog pH sensor for harsh environments, specifically designed for mining processes, industrial water treatment, and wastewater treatment. The sensor is suitable for flow and immersion installation, saving space and time during installation. Its measuring range is pH 0–14, with a process temperature range of –10 to 110 °C and a maximum process pressure of 10 bar.

The CPF81 features a gel-compact electrode with a double-chamber reference system, potassium nitrate bridge electrolyte, and PTFE diaphragm. This second electrolyte bridge provides better protection against electrode poisoning ions such as sulfide (S²⁻) or cyanide (CN⁻), ensuring long-term stability even in demanding media. The compact electrode is housed in a robust PPS (polyphenylene sulfide) polymer housing with an NPT ¾” process connection, protecting against mechanical damage. An optional flat membrane is available for high flow rates, fibrous media, and mining applications.

The CPF81 is suitable for monitoring flotation, leaching, neutralization, and inlet and outlet processes in mining industries and treatment of industrial water and wastewater. It connects via a TOP68 connection head or fixed cable connection, with an optional integrated Pt100 temperature sensor. The sensor is rated IP68 for ingress protection and holds ATEX and FM certifications for use in hazardous areas.

The Purisys CPF201 and Orbipac CPF81 deliver reliable, application-specific analog pH measurement, combining durable construction, long-term stability, and resistance to the specific challenges of their respective process environments.

The Ecofit CPA640 and Cleanfit CPA482 are process assemblies from Endress+Hauser, designed for the fixed installation of 120 mm pH/ORP and dissolved oxygen sensors in pipes and vessels.

The Ecofit CPA640 is a universal process assembly specifically engineered for cost-sensitive water and process applications. It provides fixed installation for any standard 120 mm sensor with Pg 13.5 connection, including both analog and Memosens sensors. The assembly is intended for installation in pipes across wastewater treatment, water treatment, condensate treatment, and cooling water circuits, and is suitable for pressures up to 10 bar. Its threaded connections enable quick installation and removal, while various seal materials—including Viton, EPDM, Chemraz, and Kalrez—allow adaptation to diverse process conditions. The adapter body is available in PVDF, stainless steel 316L (1.4404/1.4435), or Monel, with process connections including NPT ½”, NPT ¾”, NPT 1″, and M25 x 1.5. The CPA640 is designed as a cost-efficient solution that reduces the total cost of ownership for standard pH measuring points by allowing reuse of the threaded adapter and wiring cable when sensors are replaced.

The Cleanfit CPA482 is a process assembly designed for more demanding industrial applications, handling higher pressures and temperatures than the CPA640. It accommodates 120 mm sensors and operates at pressures up to 14 bar and temperatures up to 140 °C. Wetted parts are constructed of stainless steel 1.4404, with O-rings available in EPDM or Viton for reliable sealing in aggressive media. This makes the CPA482 suitable for chemical, petrochemical, and other industrial processes where higher performance specifications are required.

The Ecofit CPA640 and CPA482 process assemblies provide reliable, application-specific sensor installation for liquid analysis, combining flexible material options, quick maintenance capability, and robust construction suited to their respective process environments.

The Cleanfit CPA450 is a manual retractable assembly from Endress+Hauser, designed for installing pH/ORP and oxygen sensors in thick-walled tanks or large pipes, particularly in processes with fibrous or sticky media. As an entry-level retractable assembly, it uses a stainless steel ball valve for reliable process isolation, making sensor maintenance extremely convenient.

The assembly’s core advantage is that sensor maintenance can be performed without interrupting the process. The ball valve reliably isolates the process medium, allowing users to clean, calibrate, or replace sensors without draining the tank or stopping the process. This capability is particularly valuable in industries such as chemical, pulp and paper, power, wastewater treatment, and water supply.

The CPA450 offers three immersion depth options: 100 mm, 250 mm, and 700 mm, allowing flexible selection based on specific tank or pipe dimensions. Wetted materials are available in stainless steel 1.4404, Alloy C22, and Titanium 3.7035 to suit different corrosive media requirements. Process connection options include G 1¼” external thread, NPT 1¼” external thread, DN 32 PN 16 flange, and ANSI 1¼” flange. Seal materials can be selected from EPDM, Viton (FPM), or Kalrez (FFKM) / PTFE depending on the application.

The assembly accommodates sensors with 12 mm diameter and 120 mm length, including standard gel electrodes and ISFET sensors. It is equipped with a G ¼ rinse connection for convenient sensor rinsing during maintenance. The process temperature range is –15 to +130 °C, with a maximum process pressure of 12 bar (at 100 °C). A safety kit is strongly recommended for pressures exceeding 4 bar to ensure operational safety.

For installation, the assembly should preferably be mounted upright, with a minimum installation angle of 15° to the horizontal. A complete measuring system consists of the CPA450 assembly, a 120 mm pH/ORP sensor (such as Orbisint CPS11D), a transmitter (such as Mycom S CPM153), and a measuring cable (such as CYK10).

The Cleanfit CPA450 provides a reliable, flexible sensor installation solution for processes with fibrous or sticky media, combining ball valve isolation with the convenience of sensor maintenance without process interruption.

The Dipfit CPA111 and CPA140 are immersion assemblies from Endress+Hauser, designed for the installation of pH/ORP sensors in open and closed tanks, basins, and channels. Both assemblies provide three sensor mounting positions and feature bayonet-style couplings for quick and easy sensor installation and removal.

The Dipfit CPA111 (Dipfit W) is a plastic immersion assembly suitable for open and closed vessels with a DN 100 flange connection. It is designed for water and wastewater treatment, as well as standard process applications. The assembly features a sliding flange that allows flexible adjustment of immersion depth to suit various vessel geometries. Constructed of environmentally friendly polypropylene material, it is compatible with sensors including CLS 21 and CLS 40 conductivity sensors with Pt100 temperature sensors. Optional accessories include spray heads and mounting brackets, and the assembly can be equipped with the Chemoclean electrode cleaning system. All accessories are replaceable without requiring replacement of the assembly itself.

The Dipfit CPA140 (Dipfit P) is a flanged immersion assembly designed for very demanding processes involving aggressive media. It is suitable for chemical industry applications such as synthetic materials and dyes production, pesticides and fertilizers production, oil or wastewater separation, and condensate treatment. It is also used in power stations and incinerator plants for cooling water monitoring and flue gas cleaning, as well as in metal extraction and processing. The assembly handles high-temperature and high-pressure applications up to 10 bar (145 psi) and 150°C (302°F). It features a Goretex filter to reduce condensation and is available with various flange process connections including DIN, ANSI, and JIS standards. The immersion depth ranges from 500 to 2500 mm (20 to 98 inches). The assembly is constructed of PVDF or stainless steel 1.4404 and holds PED certification with Ex protection available.

Both assemblies feature bayonet coupling for convenient sensor installation and removal, with good sealing even in media containing solids. This design significantly reduces maintenance and recalibration time by enabling quick sensor exchange without process interruption.

The Dipfit CPA111 and CPA140 deliver reliable, application-specific sensor mounting for liquid analysis, combining flexible sensor positioning, easy maintenance access, and robust construction for demanding process environments.

The Liquiline CM44P is a universal four-wire multichannel transmitter from Endress+Hauser, engineered for connecting process photometers and Memosens digital sensors. As the first transmitter to combine both optical sensors and Memosens sensors on a single platform, it enables complete measuring point setup for demanding processes such as chromatography, fermentation, phase separation, and filtration.

The transmitter’s core capability is its unique hybrid sensor combination. It accepts inputs from up to two process photometers and four Memosens sensors simultaneously, measuring up to 16 different parameters from six analytical sensors. Sensor types supported include pH, ORP, conductivity, dissolved oxygen, nitrate, turbidity, free chlorine, and ion-selective sensors. Mathematical functions allow the CM44P to calculate measured values based on multiple input values, enabling up to six “virtual” process values such as pH calculation from two conductivity values or rH value based on pH and ORP inputs.

The CM44P is especially suited for demanding analytical processes. In chromatography, combining a UV process photometer with pH and conductivity measurement ensures accurate detection of the target product and verifies buffer quality, leading to optimum product yield. The transmitter also detects the transition from product to cleaning phase, allowing optimization of cleaning and flushing cycles. In fermentation, photometer measurement with pH and dissolved oxygen helps achieve optimal growth conditions for microorganisms. For filtration, combining turbidity and dissolved oxygen measurement provides an accurate overview of the process, indicating product purity and whether oxygen has penetrated the process.

The transmitter performs diagnostics on all connected sensors and analyzers, transmitting error messages according to NE107 categories. Diagnostic functions include monitoring pH glass impedance, measuring signal stagnation, monitoring electrode condition and aging, checking overcurrent conditions, and comparing conductivity and temperature values against USP and EP specifications for pharmaceutical water.

Communication options are extensive, including 0/4…20 mA, HART, PROFIBUS DP, Modbus RS485/RTU, Modbus TCP, EtherNet/IP, PROFINET, and an integrated web server. The web server allows operators to remotely view diagnostic data, perform configurations, or access device parameters in any web browser, even via smartphone. The transmitter can be extended with an Ex module whose approvals (IECEx, ATEX, CSA) allow connection of sensors installed in hazardous areas.

The CM44P interfaces to all Memosens sensors from Endress+Hauser and other vendors. Sensor-related data stored directly in the sensor head can be accessed for analysis, mathematical calculations, and diagnostic purposes. Data can be stored in a tamper-proof database or SD card, exported to CSV, and logged with up to 150,000 entries in up to eight logbooks. All settings and logbooks are stored in non-volatile memory for retention during power failure. Memosens lab-calibrated sensors and hot plug-and-play allow fast commissioning.

The transmitter is available as a field device (IP66/67) or cabinet device (IP20), with an external display option (IP66). Housing materials include PC-FR base and DIN rail housing with EPDM seals. The CM44P holds cCSAus, IECEx, and ATEX certifications. Heartbeat Technology enables status-oriented maintenance and easy verification of the entire measuring point, helping optimize maintenance efforts and maximize plant availability.

The Liquiline CM44P delivers reliable, flexible multichannel measurement for demanding analytical processes, combining hybrid sensor capability, expandable architecture, and advanced diagnostic power through Heartbeat Technology.

The Liquiline CM448 and CM448R are digital 8-channel multiparameter transmitters from Endress+Hauser, designed for process monitoring and control across all industries. The CM448 features a robust field housing, while the CM448R is a DIN-rail mountable version optimized for cabinet installation in space-constrained applications.

Both models support up to 8 digital Memosens sensor channels, with the ability to connect any combination of pH, ORP, ISFET, conductivity (inductive and conductive), dissolved oxygen, chlorine, turbidity, nitrate, and sludge level sensors. The transmitter’s functionality is modularly extendable at any time with additional inputs, outputs, controllers, and math modules, allowing the device to grow with changing process requirements. Optional inputs include 2x 0/4…20 mA and 2 to 4x digital inputs, while outputs include 2 to 8x 0/4…20 mA current outputs, an alarm relay, and 4x relays.

The transmitters offer clever simplicity through a single controller that handles all parameters and applications. The intuitive user interface, automatic sensor recognition, and hot plug & play capability with pre-calibrated Memosens sensors simplify commissioning and operation. Configuration can be saved on an SD card for fast setup on duplicate installations, reducing engineering time and minimizing errors.

Seamless system integration is achieved through a unique portfolio of communication standards that suits every distributed control system (DCS), including 0/4…20 mA, HART, PROFIBUS DP, Modbus RS485/TCP, EtherNet/IP, and PROFINET. An integrated web server allows remote viewing of diagnostic data, configurations, and device parameters via any web browser, even on smartphones, enabling convenient remote monitoring and troubleshooting.

The CM448R features a compact DIN-rail design (220 x 100 x 98 mm) that saves cabinet space, requires no cut-out in the cabinet door, and enables one-click mounting with minimized wiring. It is ideal for skids and space-constrained installations. The CM448 field housing is constructed of PC-FR (polycarbonate) with dimensions of 237 x 194 x 162 mm and IP66/IP67 ingress protection. The CM448R DIN-rail housing is constructed of PC-FR with dimensions of 220 x 100 x 98 mm, featuring IP20 protection for the transmitter and IP66 for the optional display.

Heartbeat Technology enables status-oriented maintenance and easy verification of the entire measuring point, helping to optimize maintenance efforts and maximize plant availability. The transmitters hold EAC and cCSAus certifications.

The Liquiline CM448/CM448R delivers reliable, flexible multiparameter measurement for process monitoring and control, combining maximum channel density, expandable architecture, seamless system integration, and the diagnostic power of Heartbeat Technology.

The Liquiline CM444 and CM444R are digital 4-channel multiparameter transmitters from Endress+Hauser, designed for process monitoring and control across all industries. The CM444 features a robust field housing, while the CM444R is a DIN-rail mountable version optimized for cabinet installation in space-constrained applications.

Both models support up to 4 digital Memosens sensor channels, with the ability to connect any combination of pH, ORP, conductivity (inductive and conductive), dissolved oxygen, chlorine, turbidity, nitrate, and ISFET sensors. The transmitter’s functionality is modularly extendable at any time with additional inputs, outputs, controllers, and math modules, allowing the device to grow with changing process requirements. Optional inputs include 2x 0/4…20 mA and 2 to 4x digital inputs, while outputs include 2 to 8x 0/4…20 mA current outputs, an alarm relay, and 4x relays.

The transmitters offer clever simplicity through a single controller that handles all parameters and applications. The intuitive user interface, automatic sensor recognition, and hot plug & play capability with pre-calibrated Memosens sensors simplify commissioning and operation. Configuration can be saved on an SD card for fast setup on duplicate installations, reducing engineering time and minimizing errors.

Seamless system integration is achieved through a unique portfolio of communication standards that suits every distributed control system (DCS), including 0/4…20 mA, HART, PROFIBUS DP, Modbus RS485/TCP, EtherNet/IP, and PROFINET. An integrated web server allows remote viewing of diagnostic data, configurations, and device parameters via any web browser, even on smartphones, enabling convenient remote monitoring and troubleshooting.

The CM444R features a compact DIN-rail design that saves cabinet space, requires no cut-out in the cabinet door, and enables one-click mounting with minimized wiring. It is ideal for skids and space-constrained installations. The CM444 field housing is constructed of robust plastic (PC-FR) with dimensions of 237 x 194 x 162 mm and IP66/IP67 ingress protection. The CM444R DIN-rail housing is constructed of PC-FR with dimensions of 220 x 100 x 97 mm, featuring IP20 protection for the transmitter and IP66 for the optional display.

Heartbeat Technology enables status-oriented maintenance and easy verification of the entire measuring point, helping to optimize maintenance efforts and maximize plant availability. The transmitters hold EAC and cCSAus certifications.

The Liquiline CM444/CM444R delivers reliable, flexible multiparameter measurement for process monitoring and control, combining expandable architecture, seamless system integration, and the diagnostic power of Heartbeat Technology.

The Ceramax CPS341D is a digital non-glass pH sensor from Endress+Hauser, engineered as the long-runner for hygienic applications in the food and life sciences industries. Featuring a shatterproof pH-sensitive enamel coating on a steel carrier and Memosens digital technology, it guarantees long-term stability and minimal maintenance in demanding sanitary processes.

The sensor’s construction is fundamentally different from conventional glass electrodes. The carrier material is made of steel, protected against corrosion by a special resistant, anti-adhesive enamel coating. The yellow pH-sensitive enamel is fused on the lower end in a circular shape, providing a pH-sensitive area much larger than that of a glass electrode. Because there is no internal buffer, the enamel measuring electrode is directly connected to a metal contact, simplifying the sensor design and contributing to its long-term stability.

The Ag/AgCl reference is integrated in the head of the electrode, with a conductive electrolyte connection between the electrolyte vessel, reference part, and product established via a tube and a hygienically formed ground diaphragm. The KCl electrolyte is supplied in sterile PE bottles placed in a stainless steel pressure vessel. The pressure inside the electrolyte system must always be kept above the process pressure. Thanks to this sophisticated construction, the Ceramax CPS341D shows almost no drift or aging, and in most applications, annual calibration is sufficient.

The sensor is suitable for Clean-in-Place and Sterilization-in-Place processes, making it ideal for hygienic applications. It resists extreme corrosion in strong acids and is not affected by organic solvents or proteins. The glass-lined steel carrier provides mechanical stability against abrasive substances and turbulent flow from agitators, and the sensor can be installed at any orientation, even upside down. The Ceramax is installed directly in pipes or tank nozzles without the need for an assembly.

The CPS341D is used across a range of applications including food production with highly pasty media, beverage production and filling, quality control, pharmaceutical industry, biotechnology, fermentation, and water treatment. Its non-glass, shatterproof design makes it particularly valuable where glass breakage poses a contamination risk, and its large pH-sensitive surface ensures reliable measurement even in viscous or challenging media.

Memosens digital technology provides non-contact, inductive signal transmission that eliminates moisture and corrosion issues, enables laboratory pre-calibration, and stores calibration data and sensor history directly in the sensor head for predictive maintenance. The sensor is precalibrated when delivered and combines maximum process and data integrity with simple operation.

The sensor features an integrated NTC 30 kΩ temperature sensor for automatic temperature compensation. It has a diameter of 12 mm (0.47 inch) and a shaft length of 120 mm (4.72 inch), with different hygienic process connectors available. The connection uses a contactless, inductive, digital connection head with Memosens technology, rated IP68 for ingress protection. The sensor is compliant with FDA and EU 1935/2004 regulations for food contact materials.

The Ceramax CPS341D delivers reliable, shatterproof pH measurement for hygienic food and life sciences applications, combining enamel-based non-glass technology with Memosens digital capabilities for maximum process integrity and minimal maintenance.

The Flexdip CYH112 is a modular holder system from Endress+Hauser, engineered for sensor and assembly installation in open basins, channels, and tanks across water, wastewater, and utilities applications. It allows nearly any kind of fixing, such as floor, wall, and rail mounting, and is suitable for all types of sensor installation — chain, fixed, or free-swinging.

The holder system is designed as a modular platform that can be expanded or modified at any time. It provides outstanding flexibility, enabling users to install their measurement exactly at the required point. The holder is adjustable in height, position, and orientation, and existing structural works can be utilized to reduce installation costs.

The CYH112 is compatible with a comprehensive range of analytical parameters including pH/ORP, conductivity, oxygen, turbidity, sludge level, disinfection, UV photometry, and nutrients. It forms a perfect team with the Flexdip CYA112 immersion assembly for simple sensor isolation, enabling easy removal of sensors from the medium for maintenance.

Mounting options include fixing on the floor, wall, or directly on a rail. The system supports chain suspension for fluctuating water levels, fixed installation via transverse pipe, and free-swinging float mounting using a swing base. For fixed installation, the immersion tube must protrude over the retaining point by at least 100 mm (3.94 inches).

The holder system is constructed with a main pipe and transverse pipe made of stainless steel 1.4404 for durability and corrosion resistance. Chains are available in PA or stainless steel 1.4401. The system operates within a process temperature range of –20 to 60°C (–4 to 140°F) and is suitable for process pressures up to 6 bar (87 psi).

A complete measuring system typically consists of the CYH112 holder, the CYA112 immersion assembly, a transmitter such as the Liquiline CM44, and a suitable sensor. The Flexdip CYH112 delivers reliable, flexible sensor mounting for water and wastewater applications, combining modular design, robust construction, and easy maintenance to ensure accurate measurement at any open basin, channel, or tank.

The Flexdip CYA112 is a modular immersion assembly from Endress+Hauser, engineered for sensor installation in open basins, channels, and tanks across water, wastewater, and utilities applications. It provides outstanding flexibility for nearly any sensor mounting configuration — chain, fixed, or free-swinging — with a quick fastener for rapid and safe installation of Memosens or fixed-cable sensors.

The assembly is designed as a modular system that allows optimum configuration for every measuring point. The immersion pipe is available in lengths of 600, 1200, 1800, and 2400 mm (23.6, 47.2, 70.9, and 94.5 inches), with stainless steel versions extending up to 3600 mm (141.7 inches). The immersion pipe has an outer diameter of 40 mm (1.57 inches). The assembly forms a perfect team with the Flexdip CYH112 holder for simple sensor isolation, enabling easy removal of sensors from the medium without process interruption.

The CYA112 supports all common analytical parameters including pH/ORP, conductivity, oxygen, turbidity, sludge level, disinfection, UV photometry, and nutrients. The quick fastener enables rapid installation and exchange of Memosens sensors with contactless plug-in head, while twist-free installation prevents cable tangling for fixed-cable sensors. The sensor connection uses a G1″ thread, with other thread options available including NPT ¾”, G ¾”, and Pg13.5. Connection pipe types include straight, 45° angled, and 90° angled configurations.

The assembly is available in two material versions. The stainless steel version uses 1.4404 (316L) for the immersion pipe, connection angle, and welded threads, with process pressure capability up to 6 bar (87 psi). The PVC version is suitable for lengths up to 2400 mm (94.5 inches). Sensor adaption, quick fastener, and multifunctional clamp ring are constructed of POM-GF, with EPDM O-rings for sealing. Process temperature range is 0 to 60°C (32 to 140°F).

Mounting options include fixed installation on a transverse pipe of the CYH112 holder, chain suspension for fluctuating water levels, or free-swinging float mounting using a swing base. For fixed installation, the immersion tube must protrude over the retaining point by at least 100 mm (3.94 inches). A complete measuring system consists of the CYA112 assembly, CYH112 holder, a transmitter such as the Liquiline CM44, and a suitable sensor such as the CUS71D.

The Flexdip CYA112 delivers reliable, flexible sensor mounting for water and wastewater applications, combining a modular design, robust construction, and easy maintenance to ensure accurate measurement in open basins, channels, and tanks.