KDH-1A

KDH-1A series weigh modules use a unique double-ended shear beam design that produces a compact, high strength, inventory or process weighing sensor. For use on large inventory and process vessels, the modules offer checkless (no check or stay rods) design, low profile, and symmetrical bolt spacing. The floating top plate and yoke arrangement allows the module to accommodate vessel thermal expansion and contraction without measurement errors. Sideload resistance provides high accuracy on systems subjected to wind loads and vibration. The integral conduit fitting and potted cavities give superior humidity and hose-down protection. Ideally suited for weighed structures requiring inherent 'overdesign', KDH modules bolster the engineering task of meeting or exceeding ANSI/ASCE 7-98 standards. KDH-1A modules excel where adverse forces are created by wind, thermal expansion, and earthquakes.

APPLICATIONS:

• product inventory weighing/control
• large outdoor silos
• conveyor belt force measurement

The cylindrical double-ended shear beam module is designed to measure shear stresses induced by an applied load without errors caused by thermal expansion. The combination beam and mounting hardware are ideally suited for use on large outdoor storage vessels where temperature, wind, and possibly seismic forces are encountered.
The cylindrical tube-type transducer offers several advantages over rectangular shear beam designs. Superior resistance to moisture contamination is accomplished by eliminating gaged pockets on the outside of the beam. Instead, the KDH uses strain gages applied to the inside wall of the tube. In addition, the cable entry is equipped with a conduit itting for cable protection and is internally potted.
Structurally, the cylindrical tube is equally strong in both the vertical and horizontal planes. Unlike rectangular shear beams that are typically weaker in the horizontal plane, KDH modules are less affected by sideloads induced by vibration, wind, or process dynamics. The design of the mounting hardware eliminates the need for pins and/or bolts to attach the beam. This reduces the adverse effects of varying edge and point stresses and makes the overall module less susceptible to calibration changes. Low proile design, symmetrical mounting bolt patterns, and optional top plates make KDH modules easy to install on new or existing structures and vessels.