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Source Holder/Radiation Source
The Ronan Continuous Level System uses the cesium-137 isotope as its source of radiation. The cesium isotope has been selected for its excellent penetration capability and thirty year half-life. The source activity is selected after giving consideration to vessel and process parameters such as diameter, wall thickness, material and measurement span. This assures optimum sensitivity, economy and safety while keeping the source activity to a minimum.

The cesium-137 source material is doubly encapsulated in a heliarc-welded 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. A lockable shutter is provided to allow complete shielding during shipping, installation and maintenance.

SA-1 Source Holder
SA-4, SA-10, SA-15 Source Holders


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RONAN ENGINEERING COMPANY • MEASUREMENTS DIVISION
8050 Production Drive • Florence, Kentucky, 41042, USA
Phone: (859) 342-8500 • FAX: (859) 342-6426