| 摘要 |
The device has means (1) for feeding the gas to a manometer (2) with needle (3). A sensor (5) is placed on the angular trajectory of the needle (3). A signal processor (11) processed the signal emitted by the sensor (5) during the passage of the needle (3) over it The sensor (5) is an induction type. The needle (3) has at least a metal part, and the space (d) between the needle (3) and the sensor (5), during movement over it, is between 0.8 and 1.2 mm, preferably 1mm. |
