Patent ID: 8342811

Claim:
A sensor assembly ( 1 ) for measuring movements of a fluid pump ( 10 ), the fluid pump ( 10 ) being located inside a hermetic housing ( 50 ) and being driven by an electric motor ( 30 ) and the electric motor ( 30 ) being connectable to a feed voltage (V), the sensor assembly ( 1 ) comprising an accelerometer ( 2 ), the accelerometer ( 2 ) being electrically connected to a bias circuit ( 51 ), the accelerometer ( 2 ) comprising first and second acceleration transducers ( 4 a , 4 b ), a feed terminal ( 34 ), and a signal terminal ( 33 ), the feed terminal ( 34 ) being directly electrically connectable to the feed voltage (V) of the electric motor ( 30 ), the signal terminal ( 33 ) being electrically connectable to an external measuring circuit ( 55 ), the external measuring circuit ( 55 ) being located outside the hermetic housing ( 50 ), and the sensor assembly being mounted in an internal portion ( 50 ′) of the hermetic housing ( 50 ) of the fluid pump ( 10 ).