Vibrating wire measuring instrument
AssigneeSartorius-Werke GmbH
InventorRainer Exner
Life of this patent
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Abstract
A vibrating wire measuring instrument, such as a vibrating wire galvanometer, dynamometer, or strain gauge, wherein the wire which is to execute transverse vibrations is mounted between two fixing members, and node masses are rigidly attached to the wire so that the latter is subdivided into (a) two connection portions (between the node masses and the fixing members) and (b) an intermediate portion (between the node masses); the wire is of constant cross section and integrally formed; the node mass may be soldered or welded to the wire or clamped, e.g. in a detachable manner.
Claims12
A vibrating wire measuring instrument for measuring forces, especially a wire balance comprising:
- at least one integral wire mounted between a pair of fixing members, at least one of said fixing members being movable with respect to the other in response to an applied force and said wire being of constant cross-section over its length;
- and two decoupling masses attached rigidly to said wire, forming vibrational nodes and dividing said wire into two connection nonvibrating portions between each of said masses and a respective one of said fixing members and into an intermediate vibrating portion, each nonvibrating connection portion extending between one of said vibrational nodes and a fixing member and the intermediate vibrating portion extending between the vibrational node decoupling masses;
- whereby the instrument enables energy to be introduced into said wire and cause said intermediate portion to be excited into transverse vibrations at a frequency representative of the force applied to the movable fixing member.
Dependencies are inferred from the claim text.