Source Holder/Radiation Source
The Ronan Point Level Systems use the cesium-137 isotope as the source of radiation. The cesium isotope has been selected for its excellent penetration capability and a thirty year half-live. The source activity is selected after giving consideration to vessel and process parameters such as diameter and wall thickness. This assures optimum response time, economy and safety while keeping the source activity to a minimum.

The cesium-137 source material is encapsulated in a stainless steel capsule and placed into the source holder. This ductile iron or steel housing is then lead filled to provide shielding in all directions except where the radiation is beamed to the detector. Licensed source holders provide a lockable shutter to allow complete shielding during shipping, installation and maintenance.