Technical Data
CompareConductivity
| Measuring Principle | Conductive |
| Application | Measurement in pure and ultrapure water range Monitoring of ion exchangers Reverse osmosis Distillation and chip cleaning |
| Characteristic | Digital 2-electrode conductivity sensor |
| Measuring range | k=0,01: 0.04 to 20 µS/cm k=0,1: 0.10 to 200 µS/cm |
| Measuring principle | Conductive conductivity cell with electropolished stainless steel electrodes |
| Design | 2-electrode conductivity cell with coaxially arranged electrodes, electropolished |
| Material | Electrode: stainless steel 1.4435 Electrode shaft: PES |
| Dimension | Electrode diameter: 16 mm (0.63 inch) Electrode length: appr. 55 mm (2.17 inch) |
| Process temperature | Threaded with fixed cable: -20 to 100 °C (-4 to 212 °F) Threaded with plug-in head: -20 to 120 °C (-4 to 248 °F) Sterilization: max. 140 °C (284 °F) for 30 minutes |
| Process pressure | 13 bar at 20 °C (188 psi at 68 °F) absolute 2 bar at 120 °C (14 psi at 248 °F) absolute |
| Temperature sensor | Pt1000 |
| Ex certification | ATEX, NEPSI, CSA, IECEx, INMETRO, EAC Ex |
| Connection | Process: 1/2" and 3/4" NPT, Clamp 1 1/2" Sensor connection: Inductive, digital connection head with Memosens 2.0 technology |
| Ingress protection | IP68 |
| Certificates, declarations and approvals | Calibration certification of the cell constante and temperature, material certification 3.1 |
The Memosens CLS15E conductivity sensor is particularly suitable for low-conductivity measurement applications such as boiler feedwater and chip cleaning. Even in hazardous areas, the conductivity sensor reliably performs high-precision measurements. CLS15E uses Memosens 2.0 digital technology, supports extended data storage and saves calibration, settings and process parameters, providing the perfect basis for implementing predictive maintenance and advancing IIoT technology.
Advantages
Low maintenance workload and long service life make the sensor extremely cost-effective.
The sensor withstands high-temperature disinfection and autoclaving and can be installed on aseptic equipment.
The electrodes of Memosens CLS15E are symmetrically arranged, delivering high-precision low-conductivity measured values.
The quality certificate indicates the sensor's cell constant, allowing precise adjustment of the measuring point.
Supports IIoT: Memosens 2.0 supports extended data storage, saves calibration and process parameters for better trend identification, and is the perfect basis for implementing predictive maintenance and advancing IIoT technology.
Non-contact inductive signal transmission provides high process safety.
Application
Memosens CLS15E measures conductivity in pure and ultrapure water applications for process monitoring:
Boiler feedwater
Ion exchange columns
Reverse osmosis processes
Circulating cooling water
Distillation columns
Chip cleaning
Digital sensors used in power plants:
Degassed conductivity
pH measurement based on differential conductivity
With international explosion protection approvals such as ATEX and IECEx, the cable can be used in hazardous areas.
Spare Parts & Accessories 11
11 spare parts · click to collapse
| Order code | Description | |
|---|---|---|
| 50066536 | threaded fittingfor cementing in cross / T-pieces DN 20 | Details |
| 50004381 | adapter fittingfor mounting of sensors with thread NPT 1/2". | Details |
| 50004738 | Mating Sleevefor conductivity cell installation into T-90-piece or cross piece DN 32 | Details |
| 50004739 | Mating SleeveFor conductivity cell installation into T-90-piece or cross piece DN40 | Details |
| 50004740 | Mating SleeveFor conductivity cell installation into T-90-piece or cross piece DN50 | Details |
| 50081902 | Calibration solution 74.0 µS/cm500 ml, reference temperature 25oC. Precision solution referred to SRM of NIST. With temp. table for qualified calibration of conductivity measuring systems acc. to ISO | Details |
| 50081903 | calibration solution500 ml, reference temperature 25oC. Precision solution referred to SRM of NIST. With temp. table for qualified calibration of conductivity measuring systems acc. to ISO. | Details |
| 50081904 | Calibration solution 1.406 mS/cm500 ml, reference temperature 25oC. Precision solution referred to SRM of NIST. With temp. table for qualified calibration of conductivity measuring systems acc. to ISO | Details |
| 50081905 | calibration solution500 ml, reference temperature 25oC. Precision solution referred to SRM to NIST. With temp. table for qualified calibration of conductivity measuring systems acc. to ISO | Details |
| 50081906 | calibration solution500 ml, reference temperature 25oC. Precision solution referred to SRM of NIST. With temp. table for qualified calibration of conductivity measuring systems acc. to ISO | Details |
| CYA21- | Compact flow-through mounting assembly CYA21Stainless steel flow-through assembly for mounting on analytical panels. Construction of analytical panels for applications within powerplants and the (petro-) chemical industry among others. Fits for applications up to 100oC at 16 bar. Robust stainless steel assembly; fit for applications at higher pressure and temperature rates; perfect for bypass installations; inclusive mounting kit. | Enquire |
Configurator / Comparison
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Source:Endress+Hauserwebsite public information
Measuring principle video
Click to playManuals & Documents 4
All documents for this modelCase Studies
Municipal Wastewater Treatment · conductivity — 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 conductivity; the focus is measuring conductivity to judge water purity or chemical concentration.
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 choosing two- or four-electrode cells by range and corrosivity.
Implementation
The scope ran through the analyser range: selecting as part of a complete water-analysis system. Technically it hinges on choosing two- or four-electrode cells by range and corrosivity, and on these requirements: stable compliance with Grade 1A discharge limits and online data reporting.
Customer Benefit
In practice this means stable concentration control and less reagent and discharge waste, which cut the workload on the site maintenance team.
Food & Beverage · conductivity — Application Case
Project Background
The project covers dosing, pasteurising, filling and CIP stages. The work centres on conductivity and the core task is measuring conductivity to judge water purity or chemical concentration.
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 conductivity cannot be specified generically — it calls for choosing two- or four-electrode cells by range and corrosivity.
Solution
The Ainstru engineering team worked through the analyser range: selecting as part of a complete water-analysis system. The configuration involves choosing two- or four-electrode cells by range and corrosivity, 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 stable concentration control and less reagent and discharge waste.
Chemical & Pharmaceutical · conductivity — Application Case
Project Overview
The site is reactors, metering vessels and finished-product tanks. The customer wanted conductivity properly configured on the existing plant, with the aim of measuring conductivity to judge water purity or chemical concentration.
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 conductivity configuration has to involve choosing two- or four-electrode cells by range and corrosivity.
Configuration
Supply and installation were organised through the analyser range: selecting as part of a complete water-analysis system. On site this meant choosing two- or four-electrode cells by range and corrosivity, checked line by line against: Ex certification and GMP traceability of records.
Performance
After commissioning the outcome is stable concentration control and less reagent and discharge waste, and the readings are now used for process tuning.
Power & Energy · conductivity — 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 measuring conductivity to judge water purity or chemical concentration.
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 choosing two- or four-electrode cells by range and corrosivity.
What We Did
We took a analyser range approach — selecting as part of a complete water-analysis system. Delivery was built around choosing two- or four-electrode cells by range and corrosivity, with point-by-point checks on: compliance with power-industry codes and unit availability targets.
Operating Outcome
In service the system performs as intended — stable concentration control and less reagent and discharge waste, with routine maintenance falling noticeably.
