Technical Data
ComparepH
| Measuring Principle | ISFET |
| Application | Hygienic and sterile applications (sterilizable, autoclavable): - Bioreactor/fermenter - Biotechnology - Pharmaceutical - Food |
| Characteristic | Digital, sterilizable and autoclavable pH electrode for hygienic production processes with bacteria tight ceramic junction |
| Reference | Stabilized gel reference system |
| 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 14.2 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 CPS77E is the expert for hygienic applications. Its bacteria-proof reference with highly stable gel guarantees reliable measurements. The unbreakable sensor is sterilizable with hot steam, autoclavable and assures highest product safety. CPS77E features Memosens 2.0 digital technology, offering extended storage of calibration and process data for predictive maintenance. The sensor resists moisture and enables lab calibration, enhancing process integrity and increasing process uptime.
Hygienic and sterile applications:
Food & beverage industry
Life sciences
Biotechnology
With all relevant approvals for hygienic applications such as EHEDG, 3A, EU1935/2004, USP 87/88.
Benefits
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 PEEK sensor body ensures highest product safety where glass breakage is intolerable.
With its certified biocompatibility and pharma compliance (optional Pharma CoC), the sensor protects the quality of your products.
The sensor is suitable for hot steam sterilization and autoclaving offering long-term stable measurements.
Low maintenance: ISFET technology is insensitive to temperature variations and shows virtually no acid or alkaline errors, allowing for long calibration intervals.
Six times higher CIP stability compared to conventional ISFET pH sensors ensures a longer lifetime even when the sensor is exposed to cleaning in place.
Maximum process safety: Non-contact inductive signal transmission eliminates all problems due to moisture or corrosion.
pH:
| Measuring Principle | ISFET | |
| Application | Hygienic and sterile applications (sterilizable, autoclavable): - Bioreactor/fermenter - Biotechnology - Pharmaceutical - Food |
|
| Characteristic | Digital, sterilizable and autoclavable pH electrode for hygienic production processes with bacteria tight ceramic junction | |
| Reference | Stabilized gel reference system | |
| 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 14.2 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 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 |
| 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 |
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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