Nucleonic measurement… safe and reliable
The use of radioactivity for level, limit level, density or mass flow measurement has many advantages in comparison with other measuring methods. Nucleonics is only used in measurement engineering when measuring probes that protrude into the vessel are not able to handle the measuring task.
As measurement technology using gamma radiation is completely unaffected by high vessel pressures, corrosive media, extreme temperatures or problematic physical product characteristics are able to continuously deliver exact and reliable measuring results. Compared with other applications of radioactivity, nucleonic measurement gets by with radiation sources of relatively low intensity. If protection regulations are adhered to, a radiation hazard is practically non-existent. The radiation intensity of nucleonic devices for measurement of level, limit level, density or mass flow is so low today that a conventional ‘Geiger counter’ does not respond to it at all. But it is nonetheless radioactivity. Therefore, nucleonic gauges must be one thing above all: safe!
- Radioactive level, limit, density and mass flow measurement offers many advantages over other techniques.
- Disadvantages include permits and special safety measures – but safety remains a key factor for all these instruments.
- Modern radioactive instruments are becoming increasingly popular and significant safety-related improvements have been made.
Published as: Gamma rays… no fear!
By R Bonath, VEGA
Electricity+Control June 2011 (pgs 60 – 62)