The Thayer
flexure suspension system (Patented) with its linear variable
displacement transducer utilizes a series of high tensile
strength steel flexures coupled to summing levers to accurately
focus force to a tension type load sensor. Force measurement
is decoupled from load position and mass counterbalance
to accurately measure net material weight.
Design principle:
Load is opposed by tension forces in corner flexures (A).
Tension forces in corner flexures produce moments about
fulcrum flexures (B). Moment of left hand lever is transferred
to right hand lever via equalizing flexure (C). Summed moment
in right hand lever is therefore proportional to load irrespective
of load position. Moment in right hand lever is opposed
by tension in link flexure (D). Tension in link flexures
(D) produces a moment in the final lever. Fulcrum flexure
(E) transfers force to displacement transducer.
Feature:
• Sustained sensitivity
without maintenance.
• Cancels horizontal
force vectors.
• Nulls out heavy tare
loads.
• Immune to off center
loading effects.
• 1000% over load capacity
