Neptune Sonar - Model D/140 -Spherical Hydrophone
The D/140 is one of a group of spherical transducers exhibiting a combination of broadband frequency response, omni- directional beam pattern and high sensitivity. The D/140 is available with or without acoustic calibration, traceable to National Standards.
- OMNI-DIRECTIONAL RESPONSE
- LOW NOISE PERFORMANCE
- ACOUSTIC REFERENCE STANDARD
- BROADBAND OPERATION
- AIR GUN & BOOMER MONITOR
- MARINE MAMMAL AUDIO SENSOR
Resonant Frequency (Nominal): 150kHz
Useful Frequency Range: 20 Hz to 200 kHz
Beam Pattern: Omni ± 2dB up to 160kHz
Transmit Sensitivity: 148dB re 1µPa/V @ 1m
Receive Sensitivity: -207dB re 1V/µPa
Capacitance at 1 kHz (with 10m cable): 3200pF
Transmit Voltage (Abs. Max): 100 Vrms
Transmit Voltage / Duty Cycle (Max): 75 Vrms @ 10%, 20 Vrms @ 100%
Storage Temperature: -40 to +80 °C
Cable Type: Polyurethane Ø7mm Low Noise Coaxial, (Optional Ø7mm Polyurethane Screened Twisted Pair)
Operating Depth: 900m Standard, (Optional 1500m - may require an export license)
Cable Length: 10 metres standard, (Additional lengths supplied to order)
Weight Air/Water (including 10m cable): 0.59 kg / 0.2 kg
Connector: Not fitted as standard, (Optional BNC or Customer Specific)
Operating Temperature: -5 to +40 °C