Abstract: A load cell temperature compensation system (10) for accurately measuring a force load applied to an external member (18) during environmentally varying temperature values. The load cell temperature compensation system (10) includes a standard load cell (12) which is rigidly mounted on a load cell mounting plate (20). The load cell mounting plate (20) is fixedly secured to the external member (18) which has an external force load applied thereto. The temperature compensation system (10) further includes a force load application mechanism (40) which transmits a predetermined force load to the load cell (12) responsive to the external force load applied to the external member (18). A mechanism for maintaining a constant reference load force (60) is provided to maintain a substantially constant reference load force on the load cell (12) independent of temperature variations applied to the external member (18).

Abstract: A shear beam load cell system (10) for measuring loads applied to a longitudinally extended beam member (12) having a central axis (24) extending in a longitudinal direction (22). Flexure isolation means (26) are formed on opposing longitudinal end sections (28, 30) of the beam member for minimizing strain on a central section (32) of the beam member (12) responsive to load displacements on the beam member (12). A multiplicity of strain gauge members (14, 16, 18, 20) are secured to the central section (32) of the beam member (12). Web flexure means (58) are formed within the central section (32) of the beam member (12) for mounting the strain gauge members (14, 16, 18, 20) to the beam member (12). The shear beam load cell system (10) minimizes stress changes in the central section (32) of the beam member (12) in response to non-measurement loads applied to the beam member (12).