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GeoSpectrum M1 Hydrophone Specification
version 1.1, August 2002

M1 (-202.5 dBV, 14.5 nF)

 

 

An electrically-shielded hydrophone and cable with a flat frequency response to greater than 25 kHz.

The M1 is an electrical equivalent to the AQ1®. It is designed for long term immersion in isoparaffinic fluids

Voltage Sensitivity
--202.5 ± 1.5 dBV re 1 µPa @ 20 °C, 1 kHz
Charge sensitivity

109 nC/bar ± 25% @ 20 °C, 1 kHz

Capacitance

14.5 nF ± 3 nF @ 20 °C, 1 kHz

Operating and survival depths
> 2000 m
Sensitivity loss at 2000 m

< 0.35 dB

Capacitance loss at 2000 m
< 25%
Size: length, diameter
50 mm, 16 mm
Mass
14.5 grams
Displacement
10 cc
Storage and operating temperatures
-40 to +70 °C
Electrical lead
Two leads, 28 AWG stranded, 15 cm long
Electrical insulation between leads
> 500 MO after 1 month in sea water
Water blocked leads
Yes
Compatible with isoparaffinic fluids
Yes

 

GeoSpectrum
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