Although optimised for lower frequencies, these probes can be used for higher frequency measurements (particularly of very weak signals). In such situations the inherent directivity and spatial averaging characteristics of a 4mm 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.
|Output Impedance:||27pF+/- 4pF|
|Typical Probe Sensitivity:||8V/MPa (equivalent to -222dB re 1V/uPa) averaged over the range 0.8-8MHz when measured at the output of a correctly terminated HP1 Submersible Preamplifier|
|Sensitivity Tolerance:||Sensitivity variation between individual probes is approx. +/-3dB|
|Typical Frequency Response:||Flat (+/-2dB): 200kHz to 3MHz
Flat (+/-4dB): 80kHz to 8MHz
Hydrophone useable down to 5kHz
|Sensor Material:||28 micron thick gold electroded Polyvinylidene fluoride (PVdF) film|
|Sensor Dimension||4.0mm diameter disc|
* Precision Acoustics reserves the right to change the specification without notice.