Nuclear Radiation Level Sensor

Nuclear bed level sensors work by sensing either the background radiation level or attenuation between a source and detector depending on whether the solids have a natural background radiation level.

Nuclear weapons by country nuclear bomb world war z. Nuclear radiation can be broadly classified into three categories. A radioactive source that emits gamma rays is placed on one side of the tank. Since gamma rays are attenuated when penetrating matter the sensor can calculate level point level density or mass flow from the intensity of the incoming radiation.

The sensor which is mounted on the opposite side of the vessel receives this radiation. To determine the level of material the detector looks for a scatter pattern that is consistent with the organic material within the tank. Nuclear based level measurement sensors can be used for point as well as continuous level measurement applications.

The trade off is that cobalt emits more powerful gamma rays than cesium which makes it better suited to applications where the radiation must penetrate thick process vessels or travel long distances across. A alpha b beta and g gamma. The figure 1 depicts penetration power of nuclear radiations such as.

The common types of radiation used in continuous level gages are ultrasonic radar microwave and nuclear. Radiation based level measurement a slightly radioactive isotope emits focused gamma rays. Less calibration drift than sensors using cobalt.

The sensors used to monitor and measure nuclear radiation levels are known as nuclear sensors. The approach is very simple. These radiations are regularly recorded and monitored in order to keep the radiations within limits.

Alpha radiation consists of a stream of fast moving helium nuclei two protons and two neutrons. This means radiation based sensors using cesium will be more stable over time ie. The maximum temperature for scintillation fill fluid sensors is 80.

These three categories are labeled with the first three letters of the greek alphabet. As such an alpha particle is relatively heavy and carries two positive electrical charges. These improvements in detector sensitivity have led to the introduction of rll radiation low level source designs which use a fraction of the isotope activity required to make the same measurement with an older sensor.

Radiation based level sensors are based on the principle of a materials ability to absorb or reflect radiation. 46 radiation based level sensors. While this is a very effective solution its expense and specialized requirements usually makes nuclear sensors a technology of last resort.