0.04 mm needle hydrophone (40 micron)
Recommended for use in measurements of high-pressure fields above 40 MHz.
Products
Needle hydrophones
Our high-performance needle hydrophone system consists of a range of interchangeable PVdF needle hydrophone probes, a submersible wide-band amplifier and a DC coupler.
The needle probes are available in a range of diameters from 0.04 mm to 4 mm, with film thickness ranging from 9 µm to 28 µm. Custom versions of hydrophones are available, such as right angle or side facing versions. Please contact us to discuss any special requirements you have.
The submersible preamplifier and DC coupler are required for all systems.
0.075 mm needle hydrophone (75 micron)
Recommended for use in high-frequency, high-pressure fields to minimise the effect of spatial averaging.
0.2 mm needle hydrophone
With a good signal-to-noise ratio, the use of this device is recommended in most measurement situations to minimise the effect of spatial averaging.
0.5 mm needle hydrophone
Hydrophones of 0.5 mm have been widely used in the measurement of high-frequency ultrasound.
1.0 mm needle hydrophone
This probe has outstanding sensitivity and is ideally suited to the measurement of lower frequency fields.
2.0 mm needle hydrophone
This probe has outstanding sensitivity and is ideally suited to the measurement of lower frequency fields.
4.0 mm needle hydrophone
This probe has outstanding sensitivity and is ideally suited to the measurement of lower frequency fields.
Attenuator
A waterproofed miniature broadband attenuator intended for use in the Precision Acoustics’ HP hydrophone system in order to extend the upper limit of detector dynamic range.
DC coupler
Provides DC power to the submersible preamplifier whilst at the same time acting as an acoustic signal coupler between the preamplifier and the user’s measurement system (via a hydrophone booster amplifier, if used).
Hydrophone booster amplifier
Optional enhancement to the basic hydrophone measurement system to provide further amplification of the hydrophone signal.
Submersible preamplifier
The submersible preamplifier is an essential part of the hydrophone signal as it buffers the signal and provides a 50 Ω source. It connects either directly to an interchangeable probe (‘HP’ series), or, if required, via a 20 dB in-line attenuator (A20/1).
L-shaped hydrophone mount
L-shaped hydrophone mount. Can be used with both needle hydrophones and fibre-optic hydrophones.
Contact us
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