Precise point measurements in the ultrasonic field
The Needle hydrophone - HNP series was specially developed for use in laboratory environments where pinpoint detection of ultrasonic fields is required. Thanks to its slim needle shape, it enables targeted access to narrowly defined measurement areas and is particularly suitable for detailed field mapping. At the same time, the HNP series offers good spatial resolution and thus supports precise analyses of complex ultrasonic fields in research and development.
Flat frequency response and good directional characteristics
Compared to other needle hydrophones, the Needle hydrophone - HNP series is characterized by a particularly flat frequency response. Although the sensitivity is lower than that of higher-class series, users benefit from an improved directional characteristic and stable signal reproduction. The usable frequency range of around 1 to 20 MHz (±6 dB) covers the majority of typical ultrasonic applications and enables reliable measurement results over a wide frequency range.
Different apertures for customized measuring tasks
The HNP series is available in different versions with different aperture sizes, including versions with 200 µm and 400 µm. This allows the needle hydrophone to be specifically adapted to the respective measuring task. Smaller apertures offer larger acceptance angles and are particularly suitable for high-resolution measurements, while larger apertures support greater signal stability with less complex sound fields. This flexibility makes the HNP series a versatile solution for a wide range of laboratory applications.
Stable construction and economical solution
In addition, the Needle hydrophone - HNP series thanks to its very stable construction and compact design. It is designed for reliable continuous use in the laboratory and supports measurements at operating temperatures of up to 50 °C. Despite its professional features, the HNP series is a comparatively cost-efficient solution. Like all hydrophones in this series, the needle hydrophone is supplied with a traceable calibration in the range from 1 to 20 MHz, which ensures high comparability and measurement reliability.
