Standard probes

USP mini

USPminilarge USPmini3 Testkop6 Click to enlarge

The state of the art sensor is the so called USP; the Ultimate Sound Probe. The three dimensional ½ inch USP mini probe consists of a three orthogonally placed Microflown acoustic particle velocity sensors and a sound pressure microphone. The actual sensor configuration without its cap is less than 5×5×5mm³! Any sound field is described by two complementary acoustic properties, the scalar value 'sound pressure' and the vector value 'particle velocity'. The Microflown is the only sensor which physically can measure the acoustic particle velocity directly. The USP mini probe is mainly used as an AVS ( Acoustic Vector Sensor ). Acoustic vector sensors have come to play an increasingly significant role in this technology with application focus on border control, harbor protection, gunshot localization, and situation awareness. As a far field measurement technique a vector as result from the USP measurement point to where a source is located giving bearing and elevation information.  It can also be used in the near field for 3D sound intensity, energy, power and acoustic impedance. Beneficial of the measurement principle is that measurement can be done in-situ under realistic condition.  The sensors  have no need to create anechoic conditions and can be used within closed cavities, such as a car interior, the sensor is not having  P/I ( pressure over intensity ) index problems.  The susceptibility of a Microflown compared to a microphone to background noise and reflections is minus 40dB.

 The USP mini comes standard including a 4 channel signal conditioner ( MFPA-4 ), the necessary cabling, calibration report and two years warranty.