0.5mm Needle Hydrophone

Hydrophones of 0.5mm have been widely used in the measurement of high frequency ultrasound. With the exceptional signal-to-noise ratio, Precision Acoustics would recommend the use of this device for measurements where signal amplitudes are expected to be particularly low.



This product is available to buy direct through our secure online shop.

However these probes can be used for higher frequency measurements (particularly of very weak signals) but in such situations the inherent directivity and spatial averaging characteristics of a 1mm aperture means that care should be taken in interpreting data.

All dimensions are in mm. All probes are hand made and as such there is always some variation between individual devices. Please contact us if the actual dimensions are critical to your work.

0.5mm hydrophone probe

Technical Specifications

Output Impedance: 18pF+/- 3pF
Typical Probe Sensitivity: 300nV/Pa (equivalent to -250.5dB re 1V/uPa) averaged over the range 2-12MHz when measured at the output of a correctly terminated HP1 Submersible Preamplifier
Sensitivity Tolerance: Sensitivity variation between individual probes is approximately +/-3dB
Typical Frequency Response: Flat (+/-2dB): 3 to 15MHz
Flat (+/-4dB): 1 to 15MHz
Minimum calibration frequency 100kH
Sensor Material: 9 micron thick gold electroded Polyvinylidene fluoride (PVdF) film
Sensor Dimension: 0.5mm diameter disc

* Precision Acoustics reserves the right to change the specification without notice.

Contact Us

If you would like more information about this product please get in touch by phone, email or enquiry form. Alternatively complete our online quote form below.

+44 (0) 1305 264669

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