Onda - Model HN-Series - Needle Hydrophones Brochure

Because needle hydrophones inherently have a good reflection profile, they are well suited for continuous wave applications where interference patterns can arise. The ceramic-based HNC models have the most sensitivity for their size, but their frequency response is less flat. The polymer-based HNP model have a smoother frequency response, with about 10 dB less sensitivity for a given size. The main advantage of the HNR needle hydrophones is that they are rugged. They are typically used to measure fields for industrial applications and other high intensity fields. The HNA model was designed to measure HIFU acoustic fields, suitable to measure multiple bursts of high pressure. Its ruggedness allows measurements inside tissues and phantoms.