Shields

LB 744x

The LB 744x series point source shields with a round beam channel are used for general purpose density and level switch measurements. LB744x shields have a lead filled shell and stainless steel shutter internals with a plunger style shutter mechanism. This shield series is available in three different sizes, to minimize shield weight and maximize shielding effect.

LB 8010

The LB 8010 point source shield with point beam channel is ideally suited for high vibration and high corrosion environments, as it is made entirely of stainless steel. A favorite of the fracturing industry, it can hold up to 20 mCi Cs-137.

LB 300LP 

The LB 300 LP rotatable point source shields have a 45 degree fan beam spread and are used for standard continuous level measurements with rod detectors. The beam spreads from horizontal down 45 degrees, and multiple shields can be used to expand the measuring range. The LB 300 LP shields have a lead filled shell, and come in four different sizes, starting with a rotatable barrel diameter of 100 mm and going up to 270 mm to hold larger activity sources.
Additional versions with various beam angles centered on the horizontal are available for bulk flow applications.

LB 8110: Am-241 Bulk Flow Rod Shield

The LB 8110 rotatable rod source shield holds Am-241 rod sources for bulk flow measurements with light loading. This shield is much smaller and lighter than the LB 300W, as the gamma from the Am-241 source is low in energy and easily blocked. Just like the LB 300W, the shield is mounted below the conveyor with a frame extending around the conveyor to hold the detector above, with the shutter on the side for easy access. The beam extends the length of the source, and when the shield is open, the gamma is channeled up through the conveyor to the detector. They are available in multiple widths and frame leg heights to accomodate a variety of conveyor sizes.

LB300 IRL I: LB81xx, Point Source Flange Mounted Shields

IRL I series flange mounted shields hold up to five insertion point sources, which are inserted into a dip tube in a vessel when traditional external mounting does not allow for the desired density, level switch, or continuous level measurement. Sources are positioned at the correct height in the dip tube and vessel with custom length of a flexible rod or wire.

LB 300 IRL II: LB7680, Mold Level Transfer Shield 

This shield used exclusively for continuous casting in the steel industry holds a Co-60 Rod source. The source is removed from the shield and lowered directly into the mold by use of a retractable plunger.  After installation of the source, the shield can be stored in a different area. If maintenance needs to be scheduled, the source can then be retracted up into the shield for safe storage.

LB 300 IRL III: LB82xx, Rod Source Flange Mounted Shields

LB 82xx series flange mounted shields hold up to five insertion rod sources, which are inserted into a dip tube in a vessel when traditional external mounting does not allow for the desired density, level switch, or continuous level measurement. Sources are positioned at the correct height by custom length of a flexible rod or wire, with additional rod sources allowing for an extended measuring range.

LB 300ML: Mold Level Shield

This shield used exclusively for continuous casting in the steel industry holds a Co-60 Rod source.  This shield is placed into the mold directly.  A turning mechanism on top allows one to open and close the shutter. These can be of different lengths with diameters from 80 mm to 200 mm. They can either be filled with lead or made completely out of tungsten to achieve a higher activity source in a smaller footprint.

Transport shields

Transport shields are used to transport rod sources when a shield is not needed or available, for example for source swaps. These are only for transportation and storage purposes, as there is no aperture.

LB 7410: Neutron Backscatter Surface Probe

The LB 7410 shield with HV amplifier is mounted directly to the external surface of a chute, vessel, or conveyor belt to measure product moisture or hydrogen content.  It contains an Am-241/Be point source with a plunger style shutter.  The shielding, source, and amplifier are integrated into this one unit.