Technical Data
ComparepH
| Measuring Principle | Potentiometric |
| Application | Media with very low conductivity or a high proportion of organic solvents or alcohol: • Chemical industry • Organic chemicals • Power stations • Laboratory measurements |
| Characteristic | Digital pH electrode for process engineering with ceramic junction and KCl liquid electrolyte |
| Measuring range | Application A • pH: 1 to 12 Application B • pH: 0 to 14 |
| Measuring principle | Liquid-KCl compact electrode with ceramic junction |
| Design | All shaft lengths with temperature sensor |
| Material | Sensor shaft: Glass to suit process pH membrane glass: Type A and B Metal lead: Ag/AgCl Open aperture: Ceramic junction, zirconium dioxide O-ring: FKM Process coupling: PPS fiber-glass reinforced Nameplate: Ceramic metal oxide |
| Dimension | Diameter: 12 mm (0.47 inch) Shaft length: 120, 225, 360 and 425 mm (4.72, 8.86, 14.17 and 16.73 inch) |
| Process temperature | Application A: –15 to 80 °C (5 to 176 °F) Application B: 0 to 135 °C (32 to 275 °F) |
| Process pressure | 0.8 to 11 bar (11.6 to 159.5 psi) absolute |
| Temperature sensor | NTC 30K |
| Ex certification | With ATEX, IECEx, CSA C/US, NEPSI, Japan Ex and INMETRO approvals for use in hazardous areas Zone 0, Zone 1 and Zone 2. |
| Connection | Inductive, digital connection head with Memosens 2.0 technology |
| Ingress protection | IP68 |
Field of application
Memosens CPS41E features a liquid KCl electrolyte and a ceramic junction making it extremely suitable for harsh chemical applications, fast-changing media and liquids with low conductivity or high organic content. Its integrated Memosens 2.0 digital technology enables extended data storage and lab calibration which results in easier operation and more process uptime and provides the perfect basis for predictive maintenance. The non-contact signal transmission ensures integrity of your process.
Media with low conductivities or a high proportion of organic solvents or alcohols and fast changing media:
Chemical industry
Organic chemicals
Power plants, e.g. boiler feed water
Laboratory measurements
With ATEX, IECEx, CSA C/US, NEPSI, Japan, INMETRO approvals for use in hazardous areas, zones 0, 1 and 2.
Benefits
Memosens 2.0 for perfect support of IIoT, digital transformation and predictive maintenance: It provides enhanced storage of calibration and process data, enabling better trend identification.
Suitable for harsh conditions: Continuous refilling of KCl bridge electrolyte and a separate reference lead prevent poisoning of the electrode.
Application in quickly changing media: Memosens CPS41E offers a fast response time thanks to its liquid KCl electrolyte and ceramic junction.
Liquid KCl electrolyte enables reliable measurement even at very low conductivities (> 0.1 µS/cm).
Suitable for cleaning in place (CIP) and sterilization in place (SIP)
Inductive signal transmission eliminates any interference by moisture, leading to safer processes.
Reduced operating costs: Sensor calibration and regeneration in the lab allows for less process downtime and extends the sensor lifetime.
pH：
| Measuring Principle | Potentiometric | |
| Application | Media with very low conductivity or a high proportion of organic solvents or alcohol: • Chemical industry • Organic chemicals • Power stations • Laboratory measurements |
|
| Characteristic | Digital pH electrode for process engineering with ceramic junction and KCl liquid electrolyte | |
| Measuring range | Application A • pH: 1 to 12 Application B • pH: 0 to 14 |
|
| Measuring principle | Liquid-KCl compact electrode with ceramic junction | |
| Design | All shaft lengths with temperature sensor |
|
| Material | Sensor shaft: Glass to suit process pH membrane glass: Type A and B Metal lead: Ag/AgCl Open aperture: Ceramic junction, zirconium dioxide O-ring: FKM Process coupling: PPS fiber-glass reinforced Nameplate: Ceramic metal oxide |
|
| Dimension | Diameter: 12 mm (0.47 inch) Shaft length: 120, 225, 360 and 425 mm (4.72, 8.86, 14.17 and 16.73 inch) |
|
| Process temperature | Application A: –15 to 80 °C (5 to 176 °F) Application B: 0 to 135 °C (32 to 275 °F) |
|
| Process pressure | 0.8 to 11 bar (11.6 to 159.5 psi) absolute | |
| Temperature sensor | NTC 30K | |
| Ex certification | With ATEX, IECEx, CSA C/US, NEPSI, Japan Ex and INMETRO approvals for use in hazardous areas Zone 0, Zone 1 and Zone 2. | |
| Connection | Inductive, digital connection head with Memosens 2.0 technology | |
| Ingress protection | IP68 | |
Measuring principle video
Click to playSpare Parts & Accessories 6
6 spare parts · click to collapse
| Order code | Description | |
|---|---|---|
| 71038228 | *** sensorfor assignment of sensors to measuring loop. 100 sensor clips with printable labels | Details |
| 71038229 | *** cablefor assignment of Sensors to measuring loop. 50 cable labels 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 |
| CPY7B- | Electrolyte Cell CPY7BKCl Electrolyte reservoir CPY7B Storage for liquid KCl Liquid KCl filled pH- and ORP electrodes: CPS41(E), CPS42(E), CPS47E ::Pressureless and pressurized ::Safe and reliable pH measurements | Enquire |
Configurator / Comparison
Manuals & Documents 4
All documents for this modelCase 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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