发明授权
US4311202A Electrical balance including a transversely arranged load compensation coil 失效
电气平衡包括横向布置的负载补偿线圈

  • 专利标题: Electrical balance including a transversely arranged load compensation coil
  • 专利标题(中): 电气平衡包括横向布置的负载补偿线圈
  • 申请号: US141148
    申请日: 1980-04-17
  • 公开(公告)号: US4311202A
    公开(公告)日: 1982-01-19
  • 发明人: Peter Kunz
  • 申请人: Peter Kunz
  • 申请人地址: CHX Greifensee
  • 专利权人: Mettler Instrumente AG
  • 当前专利权人: Mettler Instrumente AG
  • 当前专利权人地址: CHX Greifensee
  • 优先权: CHX4543/79 19790516
  • 主分类号: G01G7/04
  • IPC分类号: G01G7/04 G01G7/02 G01G21/24 G01G7/00 G01G23/48
Electrical balance including a transversely arranged load compensation
coil
摘要:
An improved balance of the electromagnetic load-compensation type is disclosed wherein, in order to improve the temperature-dependent performance of the balance and to reduce the size and amount of operating space required, the load compensation coil (54) is transversely mounted on the balance beam (36) with the plane of the coil extending normal to the longitudinal axis of the balance beam. The load-compensation system also includes a permanent magnet (74) mounted on the balance housing adjacent, spaced from and parallel with the compensation coil, the permanent magnet being magnetized in a direction causing the magnetic field lines to extend parallel with the longitudinal axis of the balance beam, whereby current flowing through the load compensation coil reacts with the magnetic field of the permanent magnet to produce a force on the balance beam that compensates for the load applied to the balance. Such an arrangement is economical to produce and is applicable, in particular, for balances having a medium degree of resolution in respect to the weighing result.
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