公开(公告)号：US3890833A

公开(公告)日：1975-06-24

申请号：US38766373

申请日：1973-08-13

Applicant: PRECISA AG

Inventor： PEER JON

IPC: G01L1/08 ,  G01G7/04 ,  G01L5/10 ,  G01G7/02 ,  G01L1/14

CPC classification number: G01L5/106 ,  G01G7/045 ,  G01L5/10 ,  G01L5/108

Abstract: Pressure measuring apparatus with electric force compensation has a magnet coil system exerting a counterforce on a pressure sensor. The system has at least two magnet coils which are controllable independently of each other. One magnet coil is for balancing a preliminary load and the second magnet coil is for balancing the force to be determined. The second coil is connected to a control circuit provided with a system for sensing the position of the sensor and a system for sensing the current required to balance the preliminary load. Once the preliminary force is balanced by one coil further applied force is measured by the current in the other coil.

Abstract translation: 具有电力补偿的压力测量装置具有在压力传感器上施加反作用力的磁体线圈系统。 该系统具有至少两个可彼此独立控制的磁体线圈。 一个磁体线圈用于平衡初步负载，第二个磁体线圈用于平衡要确定的力。 第二线圈连接到设置有用于感测传感器的位置的系统的控制电路和用于感测平衡初步负载所需的电流的系统。 一旦预备力由一个线圈平衡，进一步的施加的力由另一个线圈中的电流测量。