| 摘要 |
The press. measuring instrument is of the vibrating wire type comprising an elongate base(12) on which is pivotally mounted an elongate lever(20) parallel to the base. A vibratory wire(30) in the form of a very thin flat ribbon of W is held tautly between the lever and the base. A pair of bellows(22, 24) are supported on the base(12), on opposite sides of the pivot(18) mounted for the lever, and apply a torque to the lever proportional to differential pressure. A counterbalance is provided to prevent errors with changes in spatial orientation of the instrument.
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