据美国最近出版的《Handbook of Trans-ducers for Electronic Measuring Systems》报导,应用放射性元素和中子检验器可制成多种类型的流量计。这种传感器通常用于特殊的场合。如图所示,测量系统中的中子源固定在检验器上游管子的一侧。其原理是相关比例的低能量的中子流动的液体原子和质子相碰,同时发出电磁辐射。这 According to the recently published “Handbook of Trans-ducers for Electronic Measuring Systems” in the United States, many types of flow meters can be made using radioactive elements and neutron detectors. This sensor is usually used for special occasions. As shown, the neutron source in the measurement system is attached to one side of the tube upstream of the checker. The principle is that the relevant proportion of low-energy neutrons flowing liquid atoms and protons collide, while emitting electromagnetic radiation. This