The invention discloses a
transducer capable of being directly applied to various ultrasonic flow meters. The
transducer capable of being directly applied to the various ultrasonic flow meters is characterized by comprising a piezoelectric
ceramic wafer support, a cylindrical sealing element which is connected with the outer portion of the piezoelectric
ceramic wafer support in a sleeved mode, and a hard outer shell which contains a piezoelectric
ceramic wafer, the piezoelectric ceramic wafer support and the cylindrical sealing element, the piezoelectric ceramic wafer support and the cylindrical sealing element are fixed on the hard outer shell through fixing screws, a whole space is formed by a gap between a ultrasonic emitting surface or a receiving surface and an annular air slot, an air slot and the piezoelectric ceramic wafer and a
free space in the hard outer shell, the whole space becomes a sealed space after vent holes are sealed through sealing screws, and the whole space is filled with
coupling agent. The
transducer capable of being directly applied to the various ultrasonic flow meters has the advantages of being capable of assembling the transducer to a whole component which is applied to the device according to different application situations or requirements, good in
corrosion resistance, impurities resistance, scaling resistance, temperature character, pressure resistant character and signals, and capable of preventing the piezoelectric ceramic wafer from
cracking and solving the problem that the ultrasonic transducer can not solve.