Optimal shielding effect for safe operation
Our registered cast iron, steel, and stainless steel shields are filled with lead, tungsten, or both, offering the best shielding effect for every situation. Each shield is closeable, and is shipped locked shut until the device is put into operation.
Benefits at a glance
- Optimal shielding effect
- A variety of shields suitable for a variety of applications and measurement geometries
- Low space requirements
- Type A compliant
- Lead, stainless steel, or tungsten as shield material for gamma sources
- Special polyethylene shielding material for neutron sources
- Lockable – manually or pneumatically driven
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.
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.
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 300 L rotatable rod source shields are used for specialized continuous level measurements, available for use with rod sources with various lengths, with the beam extending the length of the active rod source. The LB 300 L shields can be stacked to increase the measuring range, and are available with various set barrel diameters to optimize shielding effect while minimizing shield weight.
LB 300W: Cs-137 and Co-60 Rod Source Bulk Flow Shield
LB 300 W rotatable rod source shields are used for Cs-137 and Co-60 bulk flow measurements. The shield is mounted below the conveyor with a steel 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.
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 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 aperature.
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.
With our unrivaled selection of shields, we can offer you the optimal solution for your measuring challenge.
Shields are designed according to international standards, ANSI 43.8, ISO 7205, and IEC 62598, and are registered with the Tennessee Department of Environment and Conservation, meeting or exceeding all of the safety requirements of the Nucelar Regulatory Commission.