| 摘要 |
1. A device for pneumatically measuring the dimensions of a piece, comprising inter alia a pneumatic circuit having a first limb (15) provided with a first input nozzle (16) and at least one measurement nozzle (17) and a second limb (19) provided with a second input nozzle (20) and opening in a reference output nozzle (21), a differential-pressure transducer (22) issuing an electric signal representative of the difference between the pressures prevailing in the two limbs of the pneumatic circuit, a measurement probe (12) in whose surface the measurement nozzle(s) (17, 27) open(s) and means (24) for connecting the input nozzles (16, 20) to a regulated pressure source, characterized in that the differential-pressure transducer (22) includes a semiconductor element and in that the pneumatic circuit and the differential-pressure transducer (22) are wholly housed inside the measurement probe (12). |
