Completely molded unit with waterblock eliminates water entry Less exposed leader wire

Minimal sensitivity change from 1-656 ft. Higher geophone and hydrophone output Anchor slots for tie wrap or other material to facilitate taping unit to cable

The GS-PV1-S Dual Sensor minimizes ghosting by combining pressure sensing (hydrophone) and velocity sensing (geophones) into a single unit.

For ocean bottom cable applications, combining the output of geophones and a hydrophone is now a widely accepted technique for reducing ghosting. To overcome the disadvantages of using two separate sensors, Geo Space now offers both pressure sensing and motion sensing in one unit. To achieve vertical orientation, the geophones are gimbal mounted and positioned adjacent to the hydrophone with all elements in a single waterproof enclosure. Boot guard available for added protection.

Specifications

Velocity Sensor

2 each GS-30CT:

Natural Frequency 10 Hz ± 2%

Sensitivity 2.55 volts/in/sec ± 2%

Damping .70 ± 2% (.686 to .714)

DC Resistance 3677 ohms ± 4%

Pressure Sensor

Natural Frequency 10 Hz ± 15%

Sensitivity 6.76 volts/bar ± 1.5 dB

Sensitivity change at operational depth less than 3 dB

Damping .70 typical (.60 to .80)

DC Resistance 871 ohms ± 5%

Operational Depth: 1 - 656 ft.

Dual Sensor Physical Dimensions

Length: 14.25 in (36.20 cm)

Diameter: 2.50 in (6.35 cm)

Weight: 4.50 lb (2.04 Kg)

Consult the factory for information on customizing geophone and hydrophone parameters to your required specifications. Specifications @ 25°C, atmospheric pressure Specifications are subject to change without notice.

Click HERE to load charts for Response Curve Output VS. Frequency. (115 KBytes)