Technical Data
ComparepH
| Measuring Principle | Potentiometric |
| Application | • Drinking water • Swimming pool water • pH compensation during the measurement of free chlorine |
| Characteristic | Digital pH electrode for standard applications in drinking water and swimming pool water |
| Measuring range | pH 1 to 12 |
| Measuring principle | Gel filled reference with one or three ceramic junctions with optional salt storage |
| Design | All shaft lengths with temperature sensor |
| Material | Sensor shaft: Glass to suit process pH membrane: glass Type A Metal lead Ag/AgCl Open aperture: Ceramic junction O-ring: FKM Process coupling: PPS fiber-glass reinforced Nameplate: Ceramic metal oxide |
| Dimension | Diameter: 12 mm (0.47 inch) Shaft length: 120 mm (4.70 inch) |
| Process temperature | –15 to 80 °C (5 to 176 °F) |
| Process pressure | 0.8 to 4 bar (11.6 to 58 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, contactless connection head with Memosens 2.0 technology |
| Ingress protection | IP68 |
Field of application
Memosens CPS31E is the expert for pH compensation in disinfection processes. It delivers stable measurement results, ensuring safe swimming pool and drinking water. Thanks to Memosens 2.0 digital technology, CPS31E provides the perfect data basis for predictive maintenance, offers easy operation and more process uptime since it can be calibrated in the laboratory and quickly exchanged on site. The sensor resists moisture and its 3 optional junctions make it suitable for minimum conductivity.
Drinking water
Swimming pool water
pH compensation for free chlorine and free bromine measurement
Benefits
Reliable: Ceramic junction ensures reliable measurement at low conductivities. For minimum conductivities, 3 junctions are the best choice.
Robust: The optional salt storage provides for extended operating time.
Precise: The sensor shows minimum drift thanks to a very low level of ion depletion in electrolyte.
Memosens 2.0 offers extended storage of calibration and process data. These data are the ideal basis for predictive maintenance and can also be used to develop and provide enhanced IIoT services.
Safe: Non-contact, inductive, digital signal transmission eliminates errors due to moisture.
Cost-efficient: Fast sensor exchange in the field increases process uptime and regeneration extends the sensor lifetime.
pH:
| Measuring Principle | Potentiometric | |
| Application | • Drinking water • Swimming pool water • pH compensation during the measurement of free chlorine |
|
| Characteristic | Digital pH electrode for standard applications in drinking water and swimming pool water | |
| Measuring range | pH 1 to 12 | |
| Measuring principle | Gel filled reference with one or three ceramic junctions with optional salt storage | |
| Design | All shaft lengths with temperature sensor | |
| Material | Sensor shaft: Glass to suit process pH membrane: glass Type A Metal lead Ag/AgCl Open aperture: Ceramic junction O-ring: FKM Process coupling: PPS fiber-glass reinforced Nameplate: Ceramic metal oxide |
|
| Dimension | Diameter: 12 mm (0.47 inch) Shaft length: 120 mm (4.70 inch) |
|
| Process temperature | –15 to 80 °C (5 to 176 °F) | |
| Process pressure | 0.8 to 4 bar (11.6 to 58 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, contactless connection head with Memosens 2.0 technology | |
| Ingress protection | IP68 | |
Case Studies
Municipal Wastewater Treatment — Wastewater Treatment Plant · pH Application Case
Project Background
Municipal Wastewater Treatment customers at the Wastewater Treatment Plant stage have long faced the challenge of insufficient accuracy in effluent quality monitoring and instruments prone to contamination causing data drift, affecting compliance discharge, placing higher demands on the stability and measurement accuracy of pH.
Solution
Based on the on-site conditions, the Ainstru technical team selected suitable pH for the customer and delivered one-stop service covering selection, installation, commissioning and tuning.
Results
- Measurement accuracy and response speed significantly improved, with stable and reliable data;
- Instruments adapt to complex Municipal Wastewater Treatment conditions, greatly reducing maintenance;
- Helping customers achieve continuous online monitoring and cost reduction, highly recognized by customers.
Food & Beverage — Food Production Line · pH Application Case
Project Background
Food & Beverage customers at the Food Production Line stage have long faced the challenge of high hygienic measurement requirements, with inline instruments needing to withstand CIP/SIP cleaning while maintaining stable accuracy, placing higher demands on the stability and measurement accuracy of pH.
Solution
Based on the on-site conditions, the Ainstru technical team selected suitable pH for the customer and delivered one-stop service covering selection, installation, commissioning and tuning.
Results
- Measurement accuracy and response speed significantly improved, with stable and reliable data;
- Instruments adapt to complex Food & Beverage conditions, greatly reducing maintenance;
- Helping customers achieve continuous online monitoring and cost reduction, highly recognized by customers.
Chemical & Pharmaceutical — Reactors and Storage Tanks · pH Application Case
Project Background
Chemical & Pharmaceutical customers at the Reactors and Storage Tanks stage have long faced the challenge of highly corrosive media and complex conditions, requiring corrosion-resistant and explosion-proof instruments, placing higher demands on the stability and measurement accuracy of pH.
Solution
Based on the on-site conditions, the Ainstru technical team selected suitable pH for the customer and delivered one-stop service covering selection, installation, commissioning and tuning.
Results
- Measurement accuracy and response speed significantly improved, with stable and reliable data;
- Instruments adapt to complex Chemical & Pharmaceutical conditions, greatly reducing maintenance;
- Helping customers achieve continuous online monitoring and cost reduction, highly recognized by customers.
Power & Energy — Power Plant Boiler and Turbine · pH Application Case
Project Background
Power & Energy customers at the Power Plant Boiler and Turbine stage have long faced the challenge of unstable measurement under high temperature and pressure, with high maintenance and downtime costs, placing higher demands on the stability and measurement accuracy of pH.
Solution
Based on the on-site conditions, the Ainstru technical team selected suitable pH for the customer and delivered one-stop service covering selection, installation, commissioning and tuning.
Results
- Measurement accuracy and response speed significantly improved, with stable and reliable data;
- Instruments adapt to complex Power & Energy conditions, greatly reducing maintenance;
- Helping customers achieve continuous online monitoring and cost reduction, highly recognized by customers.
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