Hydrophones

Brüel & amp; Les hydrophones Kjær sont des transducteurs à base d'eau calibrés individuellement. Chaque hydrophone présente une réponse en fréquence plate et est omnidirectionnel sur une large gamme de fréquences. De plus, leur construction est absolument étanche, résistante à la corrosion et peut résister à des niveaux élevés de salinité. Si vous recherchez un hydrophone de qualité qui fonctionne à des profondeurs de 1000 m, peut résister à des pressions statiques allant jusqu'à 100 bar et est conçu pour durer - vous êtes au bon endroit.



HYDROPHONE SENSITIVITY

Each Brüel & Kjær hydrophone is submitted to an extensive ageing and temperature stabilizing procedure before being individually calibrated. Individual calibration data and frequency response curves are supplied with each hydrophone. The receiving sensitivity calibration of the hydrophones is traceable to international standards.

All B&K hydrophones provide a flat frequency responses, as shown in this figure:

Hydrophone Frequency ResponseMeasurements made in water tank in free-field conditions achieved by means of pulse techniques using a Brüel & Kjær PULSE™-based calibration system.

 

 


HYDROPHONE DIRECTIVITY

All hydrophones in our range, provide great omnidirectional characteristics. The individual hydrophone directivity patterns in water are shown in the figure below.

 

Hydrophone dispersion

 

The polar directivity patterns were measured in free-field conditions achieved by means of gating techniques in a water tank.This method requires a standard hydrophone as a projector and the unknown hydrophone as the receiver whose polar directivity pattern is to be determined.