DEVICE FOR MEASURING PRESSURE Russian patent published in 2005 - IPC

FIELD: measuring engineering.

SUBSTANCE: device comprises base-holder that ends with a connecting pipe, Bourdon piping spring whose one end is tightly clamped in the base-holder and the other end is provided with the tip, and converter of movements of the tip in the electric signal. The device additionally has controllable two-passage switch of pressures whose first input passage is connected with the opening of the connecting pipe, second input passage is connected with the opening which is in communication with the atmosphere, and output passage is connected with the inner space of the Bourdon piping spring, electronic unit whose input is connected with the output of the converter of movements of the tip. The electronic unit comprises micro-controller, indicating device, digital-analogue converter, control unit, erasable storage, voltage-current converter, .signaling unit, and unit of digital interface. The converter of movements is made of self-excited oscillator whose frequency-controlling circuit has cylindrical inductive coil that is a part of the unmovable member of the movement converter. The inner space of the coil receives magnetically conducting cylindrical core rigidly connected with the tip.

EFFECT: enhanced accuracy of measuring.

1 cl, 1 dwg