| 摘要 |
The object of the invention is a method and sensor (10) for measuring air pressure by means of a membrane (14) in such a way that air pressure is allowed to affect both sides of the membrane, whereupon the pressure difference between the different sides of the membrane can be measured. According to the invention air pressure is measured so that the sensor membrane (14) is kept in position by means of the electrostatic pressure created by an electric field, whereupon the intensity of the electric field required indicates the effective pressure difference. The sensor (10) comprises a device which keeps the membrane (14) in position by means of the electrostatic pressure created by an electric field, and a device which indicates the effective pressure difference on the basis of the intensity of the electric field required. |
