Apparatus for and method of determining the liquid coolant level in a nuclear reactor

摘要: A liquid coolant measuring instrument for a nuclear reactor vessel measures the level by utilizing thermal characteristics of medium surrounding instrument. The has an elongated cylindrical body having number difference thermocouples disposed within at various levels. sectional electrical resistance heating element is located body. heats one junction each thermocouple and monitoring increase in temperature signal different levels vessel, can be determined. also provided with shield tube that surrounds forming annular space therebetween. Liquid enters through bore baffle strips entering entrained non-liquid bubbles such as steam gasses, thereby providing measurement actual not expanded level.