LOW-NOISE HYDROPHONE WITH PREAMPLIFIER
Hydrophone Type 8106 features a built-in, thick-film, and low noise, 10 dB preamplifier, delivering signal conditioning for transmission over very long distances. This makes Hydrophone Type 8106 suitable for underwater sound measurements down to 1000 meters depth.
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Type 8106 is a wide-range, piezoelectric hydrophone with preamplifier for making absolute sound measurements over the frequency range 7Hz to 80 kHz, featuring an impressive receiving sensitivity of −173dB re 1V/μPa.
USE SCENARIOS
- Calibration reference standards
- Ultrasonic measurements in liquids
- Cavitation measurements
- Laboratory and industrial measurements in liquids and gases
- As underwater projectors (8103, 8104 and 8105)
- Noise measurements in humid and polluted atmospheres
The preamplifier provides a 7Hz high-pass filter and an insert-voltage calibration facility, but does not allow the hydrophone to be used as a projector.
The hydrophone is built to withstanding high static pressure, the operational upper limit being 107 Pa (100 atm / 1000 m (3250 ft.) ocean depth. An integrated watertight connector allows quick disconnection of the cable and makes replacement and storage very easy.
| Voltage sensitivity with cable at 20° | 2000 uV/Pa ± 500 uV |
| Charge sensitivity | n/a |
| Capacitance with integral cable | n/a |
| Frequency range re. 250 Hz | 10 Hz to 10 kHz (+0.5/−3.0 dB) / 3Hz to 80 kHz (+6/−10.0 dB) |
| Operating temperature range short-tem continuous | -30 to +60 C |
| Max operating static pressure | 260 dB = 9.8 × 10^6 Pa |
| Dimensions | 182 mm (7.17 inch) |
| Weight including integral cable | 382 g (0.84 lb) |