Pressure sensor with means for re-calibration
AssigneeESEC Trading SA
InventorEugen Mannhart
Life of this patent
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Abstract
A pressure sensor for measuring a pressure p contains a membrane with a front and a rear clamped into a body. The pressure p can be applied to the rear of the membrane. The front of the membrane is actively linked to a piston. In addition, a force transmitter is present with which a predetermined force can be applied to the piston. For the purpose of re-calibration, the membrane of the pressure sensor can be deformed by the force transmitter under precisely defined conditions and the output signal re-calibrated. A positioner can also be foreseen instead of the force transmitter.
Claims6
Pressure sensor for measuring a pressure, comprising:
- a membrane with a front and a rear clamped in a body, whereby in operation pressure is applied to the front or the rear of the membrane,
- a piston, and
- a force transmitter for producing upon actuation a force for calibrating the pressure sensor, the force being transmitted by the piston to the front of the membrane for deforming the membrane.
Pressure sensor for measuring a pressure, comprising:
- a membrane with a front and a rear clamped in a body, whereby in operation pressure is applied to the front or the rear of the membrane,
- a piston, and
- a positioner for shifting the piston into a predetermined position for deforming the membrane for calibrating the pressure sensor.
Dependencies are inferred from the claim text.