CAS40D Digital ammonium and nitrate sensor ISEmax

Field of application

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.

ISEmax CAS40D measures ammonium, nitrate and pH in municipal wastewater treatment plants:

• Aeration basins
  - Determination of ammonium and nitrate concentration
  - Control and regulation of ammonium decomposition
  - Load-dependent aeration control for optimization of the treatment process

• Inlet of aeration basins
  - Determination of ammonium load (pH-compensated)

Benefits

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

• Optional potassium and/or chloride measurement compensates for cross sensitivities and ensures reliable measuring results

• 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

• 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

• 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