HNA-series Needle Hydrophone

The HNA model was designed to measure HIFU acoustic fields, suitable to measure multiple bursts of high pressure.

Key Features and Benefits
  • Piezoceramic sensing element
  • Needle shape with low reflection profile
  • Encased in metallic coating to minimize cavitation damage
  • Flat frequency response
  • Various apertures available
The HNA series needle hydrophones are the result of an extensive development to combine good spatial resolution with the ability to withstand high acoustic intensities such as encountered in mapping HIFU acoustic fields. Its ruggedness also opens possibilities for use inside tissue or phantoms.
HNA-0400
Frequency range (±6dB) 1-10 MHz
* EOC Nominal Sensitivity [nV/Pa] 70
* EOC Nom. Sens. [dB re 1V/uPa] -263
Effective Diameter 400 μm
Capacitance 80pF
Max. Operating Temperature 50 °C

* EOC ("end of cable") is the open-circuit output sensitivity of the hydrophone. Calibration with an amplifier can be determined from the gain and input impedance of the amplifier.

Provided with traceable calibration 1-20 MHz at 50 KHz intervals. For other calibrations available visit our web site.

The HNA hydrophone can withstand very high pressures (see reverse) but damage is caused by inertial cavitation and not incident field pressure per se. The same incident pressure may be safe or result in cavitation depending on water purity, gas content, temperature, agitation, and many other factors. The user is advised to watch for and avoid exposing this device to inertial cavitation.

Specifications are subject to change without notice.

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Related Resources

HNA Hydrophones Data Sheet

HNA Hydrophones Data Sheet

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