Load cell and weighing foot

A weighing foot having a load cell, the load cell comprising

• a spring body formed rotationally symmetrically about a center axis and having an outer support ring, having an upwardly projecting inner force introduction element, and having an annular deformation section that is formed as an annular membrane and via which the support ring and the force introduction element are fixedly connected to one another;
• and
• a plurality of strain gauges arranged on a lower side of the membrane for detecting a stretching and/or compressive deformation of the spring body, with the strain gauges being electrically connected to form a Wheatstone bridge or as a part thereof,
• wherein at least one first strain gauge is disposed on a first circle having a first radius about the center axis of the spring body and at least one second strain gauge is disposed on a second circle having a second radius that is greater than the first radius about the center axis of the spring body,
• wherein the mean thickness of the annular membrane in the region of the at least one first strain gauge is larger than the mean thickness in the region of the at least one second strain gauge.

A weighing system having a plurality of weighing feet, and having a load carrier supported on the plurality of weighing feet, each weighing foot having a load cell, the respective load cell comprising

• a spring body formed rotationally symmetrically about a center axis and having an outer support ring, having an upwardly projecting inner force introduction element, and having an annular deformation section that is formed as an annular membrane and via which the support ring and the force introduction element are fixedly connected to one another;
• and
• a plurality of strain gauges arranged on a lower side of the membrane for detecting a stretching and/or compressive deformation of the spring body, with the strain gauges being electrically connected to form a Wheatstone bridge or as a part thereof,
• wherein at least one first strain gauge is disposed on a first circle having a first radius about the center axis of the spring body and at least one second strain gauge is disposed on a second circle having a second radius that is greater than the first radius about the center axis of the spring body,
• wherein the mean thickness of the annular membrane in the region of the at least one first strain gauge is larger than the mean thickness in the region of the at least one second strain gauge.