The model N-ALM level sensor is 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.
This instrument was designed without any organic materials or active electronic components in the sensors or cabling that could be affected by the accident conditions described. The sensor will continue to function even in case of a Loss of Coolant Accident (LOCA) and can be fitted with a filter for protection against coarse debris. An accident-proof connection using mineral-insulated metal-sheathed cable is also available and meets the same standards as the integrated sensor units.
This instrument is ideal for retrofitting the existing level measuring instrument as part of a wide range of post-accident monitoring systems.
The purpose of accident level measurement is to ensure functionality during and after a severe accident scenario. All materials used are inorganic and capable of withstanding a high dose of gamma radiation.
