Technical Data
ComparepH
| Measuring Principle | Potentiometric |
| Application | Long-term monitoring and limit control in processes with stable process conditions Water and wastewater treatment |
| Characteristic | Digital pH electrode for standard applications in process and environmental technology with dirt-repellent PTFE ring junction and built-in temperature sensor |
| Measuring range | Application A • pH: 1 to 12 Application B • pH: 0 to 14 Application F • pH: 0 to 10 |
| Measuring principle | Gel compact electrode with PTFE ring junction |
| Design | All shaft lengths with temperature sensor Advanced gel technology |
| Material | Sensor shaft: Glass to suit process pH membrane glass: Type A, B, F Metal lead: Ag/AgCl Aperture: Ring-shaped PTFE junction O-ring: FKM Process coupling: PPS fibre-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) Application F: 0 to 70 °C (32 to 158 °F) |
| Process pressure | Applications A and B: 0.8 to 17 bar (11.6 to 246.5 psi) absolute Application F: 0.8 to 7 bar (11.6 to 101.5 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 CPS11E is the digital all-rounder for stable processes. It measures reliably even in extreme pH ranges or hazardous areas. Thanks to Memosens 2.0 digital technology, the pH sensor resists moisture and enables lab calibration, increasing process safety and simplifying operation. Its extended storage of calibration and process data provides the perfect basis for predictive maintenance. Designed for a long operating life and low maintenance, Memosens CPS11E offers you best value for money.
Long-term monitoring and limit monitoring of processes with stable process conditions:
- Chemical industry
- Pulp & paper industry
- Power plants (e.g. flue gas washers, boiler feed water)
- Incineration plants
Water & wastewater treatment:
- Drinking water
- Cooling water
- Well water
- Wastewater treatment plants
With ATEX, IECEx, CSA C/US, NEPSI, Japan, INMETRO approvals for use in hazardous areas, zones 0, 1 and 2.
Benefits
IIoT ready: Memosens 2.0 offers extended storage of calibration and process data, enabling better trend identification and providing a future-proof basis for predictive maintenance and enhanced IIoT services.
Low operating costs: Lab calibration and quick sensor exchange in the process result in minimized process downtime and longer sensor lifetime.
Robust, low maintenance electrode: Long poison diffusion path or optimized ion trap prevent poisoning of the electrode reference. Large, dirt-repellent PTFE junction protects from soiling by the medium.
Process glass is suitable for the full pH range and pressure-stable up to 17 bar (246.5 psi) absolute. Optional F-glass allows application in media containing hydrofluoric acid such as etching baths in semiconductor production.
Improved optional salt storage ensures reliable measurement in low conductivity applications such as boiler feed water.
Maximum process integrity through non-contact, inductive signal transmission.
| Measuring Principle | Potentiometric | |
| Application | Long-term monitoring and limit control in processes with stable process conditions Water and wastewater treatment |
|
| Characteristic | Digital pH electrode for standard applications in process and environmental technology with dirt-repellent PTFE ring junction and built-in temperature sensor | |
| Measuring range | Application A • pH: 1 to 12 Application B • pH: 0 to 14 Application F • pH: 0 to 10 |
|
| Measuring principle | Gel compact electrode with PTFE ring junction | |
| Design | All shaft lengths with temperature sensor Advanced gel technology |
|
| Material | Sensor shaft: Glass to suit process pH membrane glass: Type A, B, F Metal lead: Ag/AgCl Aperture: Ring-shaped PTFE junction O-ring: FKM Process coupling: PPS fibre-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) Application F: 0 to 70 °C (32 to 158 °F) |
|
| Process pressure | Applications A and B: 0.8 to 17 bar (11.6 to 246.5 psi) absolute Application F: 0.8 to 7 bar (11.6 to 101.5 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 5
5 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 |
| 71038229 | *** cablefor assignment of Sensors to measuring loop. 50 cable labels with printable labels. | 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
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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