The size of the active element of the water hearing affects many properties, including sensitivity, frequency response, directional response, dynamic range and noise equivalent pressure. This technical data sheet is based on iec 62127 – part 3 [3] and provides detailed specifications for the 2. 0 mm needle hydrophone system。
The british pa nh2000 hydrophone, a 2mm hydrophone, is a high sensitivity device that optimizes applications below 2 mhz。
Pa nh2000, introduction to 2 mm hydrophone products, united kingdom
The uk pa nh2000 needle hydrophone is a high sensitivity receiver that optimizes the use below 2 mhz for measurements in the range of 100 khz to 10 mhz. Large active area can measure the signal of 150 pa. However, the larger sensor area leads to a more directional response mode, especially at higher frequencies。British pa nh2000 hydrophone, 2 mm hydrophone specification parameters:
| Water hearing model | Nh2000 |
| Spectrum sensitive component dimensions | Diameter: 2. 0 mm Thickness: 28 μm |
| Water hearing size | 54*48mm |
| Water hearing weight | 2. 5g |
| Transmission method | Voltage conversion |
| Spectrum material | Polyfluoroethylene (pvdf) |
| 0. 1 mean sensitivity in the mhz to 10 mhz range degrees | 3. 5 v/mpa |
| Sensitivity differences between sensors | ± 3 db |
| Water hearing band | 0. 1 mhz to 10 mhz |
| Measuring uncertainty | 0. 1 mhz to 1 mhz: 9% 1 mhz to 8 mhz: 14% 9 mhz to 15 mhz: 18% |
| The water-heart system is out of control | 50 times |
| Direction in use | Point the needle directly to the sound source |