Technical Data
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| Measuring Principle | Potentiometric / ISE |
| Characteristic | Online measurement of nutrient parameters in municipal wastewater treatment plants Ion-selective electrode system for the continuous measurement of ammonium and nitrate |
| Size | Diameter: 112 mm (4.41 inch) Immersion depth: 510mm (20.08 inch) |
| Design | Ion-selective electrode(s) for ammonium and/or nitrate, potassium or chloride pH - (Reference) electrode Ion-selective electrode for compensating cross-interference Temperature sensor |
| Process temperature | 2 °C to 40°C (36 to 100 °F) |
| Ambient temperature | -20 °C to 50 °C (-4 to 120 °F) |
| Process pressure | 400 mbar (160 in H2O) max. permitted overpressure |
| Application | Wastewater treatment plants |
| Measuring range | Ammonium: 0.1 to 1000 mg/l (NH4-N) Nitrate: 0.1 to 1000 mg/l (NO3-N) Potassium: 1 to 1000 mg/l Chloride: 1 to 1000 mg/l |
The ISEmax CAS40D is the right technical choice for direct trend measurement in basins. It improves efficiency and reduces energy consumption in the aeration process. The sensor uses no reagents, saving even more money. The robust ion-selective membrane and excellent self-cleaning function reduce maintenance work. Based on Memosens technology, the CAS40D combines maximum process and data integrity with the best operating comfort and predictive maintenance.
Advantages
Direct measurement of nitrate and ammonium without sample pretreatment, saving costs
Optional potassium and chloride measurement, and cross-interference compensation for reliable measurement
Automatic flushing unit for low maintenance costs
Direct installation at the basin edge, no sample collector or sample transfer pump required
Sensor parameter storage for convenient operation
Areas of application
The ISEmax CAS40D can be used directly for ammonium, nitrate and pH measurement in municipal wastewater treatment plants:
Aeration basin
- Determination of ammonium and nitrate concentration
- Control and regulation of the ammonium decomposition process
- Load-dependent aeration control to optimize the treatment process
Aeration basin inlet
- Determination of ammonium load (pH compensation)
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Case Studies
Municipal Wastewater Treatment — Wastewater Treatment Plant · EH-ONLINE 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 EH-ONLINE.
Solution
Based on the on-site conditions, the Ainstru technical team selected suitable EH-ONLINE 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 · EH-ONLINE 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 EH-ONLINE.
Solution
Based on the on-site conditions, the Ainstru technical team selected suitable EH-ONLINE 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 · EH-ONLINE 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 EH-ONLINE.
Solution
Based on the on-site conditions, the Ainstru technical team selected suitable EH-ONLINE 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 · EH-ONLINE 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 EH-ONLINE.
Solution
Based on the on-site conditions, the Ainstru technical team selected suitable EH-ONLINE 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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