An educational blog sponsored by Classic Controls focusing on education and training for the process control, instrumentation, and industrial valve community.
Understanding How Radiometric (Radiation-based) Level Measurement Works
Radiometric (also known as radiation-based) level measurement uses a very slightly radioactive isotope that emits focused gamma rays. A sensor, which is mounted on the opposite side of the vessel, receives this radiation. Because 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.
Advantages are:
Maximum operational reliability even in the harshest environments
Measurement is independent of pressure, temperature and product aggressiveness
Measuring system can be installed on the outside of a vessel during ongoing production
