Technical Data
ComparepH
| Measuring Principle | |
| Application | Hygienic and sterile applications, bioreactor, fermenter, biotechnology, pharmaceutical industry, foods |
| Characteristic | Digital pH electrodes for bioreactors and biotechnology production processes with ion trap for long-term stable reference |
| Measuring range | pH 0 to 14 |
| Measuring principle | Ceramic diaphragm, ion-trap |
| Design | All shaft lengths with temperature sensor Advanced gel technology Digital electrode with Memosens technology |
| Material | Glass and ceramic |
| Dimension | Diameter: 12 mm (0.47 inch) Shaft lengths: 120, 225, 360 and 425 mm (4.72, 8.86, 14.2 and 16.7 inch) |
| Process temperature | 0 to 135 °C (32 to 275 °F) |
| Process pressure | 1 to 7 bar abs (14.5 to 101.5 psi) |
| Temperature sensor | NTC 30k |
| Ex certification | IECEx, ATEX, NEPSI, FM, CSA |
| Connection | Inductive, digital connection head with Memosens technology |
The Memosens CPS171D ensures stable pH values in batch production for maximum batch yield! The electrode is robust and highly stable over the long term, providing highly accurate, reproducible and reliable measured values even after CIP/SIP cleaning and autoclaving. With Memosens digital technology, the CPS171D offers maximum process and data integrity and is simple to operate. The electrode is corrosion-resistant and moisture-proof, allows laboratory calibration and simplifies predictive maintenance.
Benefits
The high measurement accuracy, reproducibility and reliability of the electrode keep the pH value in the optimum range at all times, maximizing batch yield.
The electrode with its special glass membrane and reference system withstands CIP/SIP cleaning and autoclaving (max. 140°C (284°F)) with the highest long-term stability.
With Memosens technology, the cable connection is protected from moisture or corrosion: the electrode has the widest range of application and batch production safety.
The electrode is biocompatibility-certified in accordance with USP Cl. VI, uses FDA-approved materials for wetted parts, and is free of toxic, biologically active or animal-derived materials, reliably ensuring product quality.
The electrode provides process and sensor parameters that help you determine, before the next batch begins, whether the electrode is ready or should be replaced, greatly improving product safety.
The Memobase Plus software automatically stores and archives all relevant sensor and process parameters for CPS171D series maintenance.
Hazardous area approval.
Applications
The Memosens CPS171D measures pH in the following industries:
Biotechnology and pharmaceutical industry
- Bioreactors/fermenters: fermentation process control
- Bioreactors/fermenters: cell growth control
Food & beverage
- CIP/SIP applications
With international explosion-protection approvals, e.g. ATEX and IECEx, the digital sensor can be used in hazardous areas.
Compliance documentation for the pharmaceutical industry is provided, together with the electrode serial number.
Spare Parts & Accessories 4
4 spare parts · click to collapse
| Order code | Description | |
|---|---|---|
| 71038228 | *** sensorfor assignment of sensors to measuring loop. 100 sensor clips with printable labels | Details |
| 71538217 | CPSxx electrode protection cap20 pc protective caps for pH sensors CPSxx | Details |
| CPY4- | KCl electrolyte CPY4For liquid filled electrodes | Enquire |
| CPY20- | pH buffer solution CPY20pH quality buffer solution, referenced to primary reference material of PTB and standard reference material of NIST. With calibration certificate buffer solution | Enquire |
Configurator / Comparison
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Source: Endress+Hauserpublic information from the website
Measuring principle video
Click to playManuals & Documents 5
All documents for this model5 documents · click to expand
BA CPSx1, CPFx1 pH电极 CPSx2, CPFx2 ORP电极 Chinese
BA CPSx1, CPFx1 pH sensors CPSx2, CPFx2 ORP sensors English
pH-/Redoxsensoren und Referenzhalbzellen pH/ORP sensors and reference half cells Operating Instructions English
技术资料 Memosens CPS171D Chinese
Memosens CPS171D Technical Information English
Case Studies
Municipal Wastewater Treatment · PH — Application Case
Application Context
the inlet, biological and outlet stages of a municipal plant is a typical Municipal Wastewater Treatment duty. The project started from PH, focusing on continuous pH monitoring for neutralisation and compliance control.
Process Constraints
effluent parameters drift and probes foul with sludge and biofilm, and high solids and corrosive fractions, with large diurnal flow swings only amplify it. The PH specification must therefore cover choosing glass or ISFET sensors by temperature, fluoride content and pressure.
Delivery Approach
Delivery was handled as the analyser range — selecting as part of a complete water-analysis system. Execution centred on choosing glass or ISFET sensors by temperature, fluoride content and pressure, together with stable compliance with Grade 1A discharge limits and online data reporting.
Field Results
Operation shows the benefit clearly — tighter dosing control and lower reagent consumption, with confidence in this measuring point improving markedly.
Food & Beverage · PH — Application Case
Customer Profile
The typical setting in Food & Beverage is dosing, pasteurising, filling and CIP stages. The measuring point is PH; the focus is continuous pH monitoring for neutralisation and compliance control.
Key Difficulties
Conditions are syrups, dairy and beverages that scale easily, under strict hygienic requirements and, on top of that, frequent cleaning demands instruments that withstand hot CIP/SIP caustic cycles, which a standard configuration cannot handle for long. The design therefore starts with choosing glass or ISFET sensors by temperature, fluoride content and pressure.
Implementation
The scope ran through the analyser range: selecting as part of a complete water-analysis system. Technically it hinges on choosing glass or ISFET sensors by temperature, fluoride content and pressure, and on these requirements: food-safety and hygienic design per 3-A / EHEDG.
Customer Benefit
In practice this means tighter dosing control and lower reagent consumption, which cut the workload on the site maintenance team.
Chemical & Pharmaceutical · PH — Application Case
Project Background
The project covers reactors, metering vessels and finished-product tanks. The work centres on PH and the core task is continuous pH monitoring for neutralisation and compliance control.
Operating Challenges
The medium and duty are characterised by highly corrosive media with solvents and crystallisation, partly in explosive atmospheres, and corrosion plus Ex protection shortens instrument life and makes downtime costly. So PH cannot be specified generically — it calls for choosing glass or ISFET sensors by temperature, fluoride content and pressure.
Solution
The Ainstru engineering team worked through the analyser range: selecting as part of a complete water-analysis system. The configuration involves choosing glass or ISFET sensors by temperature, fluoride content and pressure, with these requirements in view: Ex certification and GMP traceability of records.
Results
Since start-up the system has run steadily; the practical result is tighter dosing control and lower reagent consumption.
Power & Energy · PH — Application Case
Project Overview
The site is boiler feedwater, turbine condensate and FGD/DeNOx systems. The customer wanted PH properly configured on the existing plant, with the aim of continuous pH monitoring for neutralisation and compliance control.
Technical Challenges
What actually causes trouble is high temperature and pressure with both steam and saline water, and drift under high temperature and pressure, with very costly unplanned outages. All of this means the PH configuration has to involve choosing glass or ISFET sensors by temperature, fluoride content and pressure.
Configuration
Supply and installation were organised through the analyser range: selecting as part of a complete water-analysis system. On site this meant choosing glass or ISFET sensors by temperature, fluoride content and pressure, checked line by line against: compliance with power-industry codes and unit availability targets.
Performance
After commissioning the outcome is tighter dosing control and lower reagent consumption, and the readings are now used for process tuning.
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