The velocity transducer CV 211 HT – is suited to the special requirements of hydraulic turbo-machinery in an environment with low speed range and high ambient temperature. The relatively high output signal reduces the additional effort for the signal transmission especially over longer distances. The usable frequency range without linearization is between 10 and 1000 Hz, the frequency range can be extended to 3 Hz through frequency linearization. Attention should be paid to the nominal resonant frequency of the measuring system which is at 8 Hz. The velocity transducer is a very sensitive vibration sensor with a rugged design that is amongst others oil-proof, waterproof and vacuum resistant. A stainless steel case permits use for very harsh industrial environments.