Technical Data
ComparepH
| Measuring Principle | ISFET |
| Application | For applications requiring high accuracy in blocking media or high content of organic solvents |
| Characteristic | Digital, sterilizable and autoclavable pH electrodes for hygienic production processes with KCl vessel for measuring in media with low conductivity |
| Reference | Liquid KCl |
| Measuring range | pH 0 to 14 |
| Material | Sensor shaft: PEEK Sealings: FFKM 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 lengths: 120, 225 and 360 mm (4.72, 8.86 and 14.17 inch) |
| Process temperature | -15 to 135 °C (5 to 275 °F) |
| Process pressure | Max. 11 bar abs at 100 °C (max. 160 psi at 212 °F) |
| Temperature sensor | Pt1000 |
| Ex certification | With the following approvals for use in potentially explosive areas of Zone 0, Zone 1 and Zone 2: ATEX, IECEx, CSA C / US, NEPSI, JPN Ex, INMETRO, UKCA and Korea Ex |
| Connection | Inductive, contactless connection head with Memosens 2.0 technology |
| Ingress protection | IP 68 |
Field of application
Memosens CPS47E is the high performer with liquid KCl reference for media with low conductivity or high organic load. It measures accurately even in applications with fast-changing media. Its unbreakable shaft ensures best product safety. 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 a perfect basis for predictive maintenance.
Media with a high amount of organic solvents or very low conductivities:
Chemical industry, measurement of media prone to clogging
Power plants, e.g. boiler feed water
Life sciences, e.g. water for injection
With all relevant approvals for hygienic applications such as EHEDG, 3A, EU1935/2004, USP 87/88
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.
Unbreakable: Non-glass PEEK body ensures highest product safety where glass breakage is intolerable.
Resistant to poisoning: Constant refilling of KCl bridge electrolyte and separate reference lead prevent poisoning ions from entering the electrode.
The sensor is suitable for autoclaving and sterilization with hot steam offering long-term stable measurement.
Low maintenance: ISFET technology is insensitive to temperature changes enabling long calibration intervals
Maximum process safety: Thanks to non-contact, inductive signal transmission, problems with moisture are a thing of the past.
Reduced operating costs: Laboratory calibration and fast sensor exchange on-site minimize process downtime and extend sensor lifetime
pH:
| Measuring Principle | ISFET | |
| Application | For applications requiring high accuracy in blocking media or high content of organic solvents | |
| Characteristic | Digital, sterilizable and autoclavable pH electrodes for hygienic production processes with KCl vessel for measuring in media with low conductivity | |
| Reference | Liquid KCl | |
| Measuring range | pH 0 to 14 | |
| Material | Sensor shaft: PEEK Sealings: FFKM 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 lengths: 120, 225 and 360 mm (4.72, 8.86 and 14.17 inch) |
|
| Process temperature | -15 to 135 °C (5 to 275 °F) | |
| Process pressure | Max. 11 bar abs at 100 °C (max. 160 psi at 212 °F) | |
| Temperature sensor | Pt1000 | |
| Ex certification | With the following approvals for use in potentially explosive areas of Zone 0, Zone 1 and Zone 2: ATEX, IECEx, CSA C / US, NEPSI, JPN Ex, INMETRO, UKCA and Korea Ex | |
| Connection | Inductive, contactless connection head with Memosens 2.0 technology | |
| Ingress protection | IP 68 | |
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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