WIKA Level Sensor with Reed Chain Technology (ALM)

For Nuclear Power Plants


  • Power generating equipment, power plants, nuclear power plants
  • Water basins
  • Cooling water tanks/pools

Normal operating conditions

  • Process- and system-specific solutions possible
  • Operating conditions:
    – Operating temperature: T = -10°C …+70 °C (+158 °F)
    – Operating pressure: ambient
  • Lengths: up to 20 m (65 ft)
  • Humidity: 100 %
  • Operational radiation dose: ≤ 160 kGy (16 MRad)

Accident conditions

  • Accident temperature: 156 °C (312 °F)
  • Accident pressure: 7 bar (0.7 MPa)
  • Accident mission time: 1 year
  • Accident rad. dose: integrated 5.05 MGy (505 MRad)
  • Seismic acceleration: up to 2.5 g (higher accelerations up to 5 g on demand)

Sales Contact (Wika.sales@asyatrafo.com)




ALM level sensors are used to measure and transmit the level of liquids in conjunction with a customer’s control unit outside of the containment area. It is based on the float principle with magnetic transmission in a 3-wire potentiometer circuit.

The resistance measuring chain is closely stepped. Due to this assembly the generated voltage is approximately continuous. Signal transmission over large distances and use in hazardous areas are possible.


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