ISEmax CAS40D - Digital ammonium and nitrate sensor

ISEmax CAS40D is the right technology for trend measurement directly in the basin.
It helps you to increase the efficiency and reduce the energy costs of your aeration processes.
The sensor works without reagents saving you even further money. With its robust ion-selective
membranes and excellent self-cleaning, it eases your maintenance tasks. Thanks to Memosens,
CAS40D combines maximum process and data integrity with best operating comfort and simplifies 
predictive maintenance.

Benefits

  • Nitrate and ammonium measured directly without the need for expensive sample conditioning

  • Optional potassium and/or chloride measurement to compensate high concentrations of interference ions

  • Low maintenance thanks to automatic flushing unit

  • Installed directly on the basin rim, no measuring container or sample-conveying pump required

  • Easy handling due to storage of sensor-specific data

 

Field of application

The ion-selective electrode system ISEmax works directly in the activated sludge basin of the municipal wastewater
treatment plant without any sample conditioning or sample transportation.

It can be applied for:

  • Determination of ammonium and nitrate concentration directly in the aeration basin

  • Control and regulation of dynamic processes

  • Determination of ammonium load (pH-compensated) in the inlet of the aeration basin

  • Load-dependent aeration control
     

Features and specifications

 
Measuring Principle Potentiometric / ISE
Characteristic Online measurement of nutrient parameters Ion-selective electrode system for the continuous measurement of ammonium and nitrate
Size diameter 75mm , (2.95inch)
immersion depth 510mm , (20,1 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 ... 40°C 
(36 ...100°F)
Ambient temperature -20°C ... 50°C 
(-4...120°F)
Process pressure 400 mbar (160 inH2O) max. permitted overpressure
Application waste water
Measurement 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