Model X96N Process Measurement Computer Continuous Level Monitor
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.
