GS-One 3-C with three Cartesian (V/H1/H2) geophone design and

aluminum housing.

Geospace Technologies - Sensors

GS-One 3-C

Dimensions:

Height: 10 in 25.4 cm

Lead Length: (as shown) 39 in 1.0 m

Diameter: 2.5 in 6.35 cm

Total Weight: (as shown) 3.73 lbs 1.69 kg

The GS-One 3-C geophone can either be a conventional 3-C design with one vertical and two horizontal geophones, or it can have three Gal’perin geophones. The GS-One is the best geophone to be used for single geophone per channel recording because of its high transduc-tion constant. The GS-One transduction constant is 0.051, compared to 0.025 to 0.037 for most popular geophones. This means the GS-One has higher voltage sensitivity than any other geophones with the same coil resistance which means that in practical application the GS-One will provide better signal to noise ratio and will detect smaller signal than most popular geophones. The GS-One is designed to produce the ideal 70% damping without the use of an external damping resistor when the input resistance of the recording system is 20K Ohm. The GS-One also offers close tolerances, high spurious and low distortion characteristics that are desirable for seismic surveys.

Electrical:

VERTICAL

All parameters are specified at 25°C in the vertical position unless otherwise stated.

Open-circuit sensitivity 2.18 V/in/s (85.8 V/m/s) +5%, -3.5%

Frequency 10 Hz ±3.5%

Spurious frequency >240 Hz

Distortion from vertical to ± 10tilt <0.15% measured at 12 Hz with 0.7 in/s p-p

Distortion at vertical 0.05% TYPICAL

Open-circuit damping 0.48 to 0.54

Coil resistance 1800 Ohm ±5%

Sensitivity with 20K load 2.00 V/in/s (78.7 V/m/s) TYPICAL

Damping with 20K load 0.70 TYPICAL

Electrical:

HORIZONTAL

GS-One 3-C - Specifications

GS-One3-C_convential_Al_041712_TablesDims2

7007 Pinemont • Houston, Texas, U.S.A. • www.oyogeospace.com Tel: 713 986-4444 • Fax: 713 986-4445

OYO Geospace Canada, Inc. 2735-37 Avenue N.E. Calgary, Alberta, Canada T1Y 5R8 403 250-9600

OYO Geo-Impulse International LLC Kirovogradskaya, 36 Ufa, Baskortostan, Russia 450001 011 (7) 3472 25 39 73

OYO Geospace China Room 700, 7th Floor, Lido Office Tower, Lido Place Jichang Road, Jiang Tai Road, Beijing, 100004, P.R.China 011 (86) 10 643 78 758

OYO Instruments, Europe Ltd. F3 Bramingham Business Park, Enterprise Way, Luton Bedfordshire LU3 4BU, England 011 44 (0) 1582 573 980

Regional Offices

Geospace Technologies - Sensors

Mechanical:

Specifications: Metric US

Moving Mass 14 gm. 0.49 oz.

Maximum coil excursion p-p 4.06mm 0.16 inch

Diameter 30.5 mm 1.2 inch

Height 40.7 mm 1.6 inch

Weight 130 gm. 4.60 oz.

Operating Temperature Range -40C to +100C -40F F

US Patent 8,098,546

NOTE: Specifications subject to change on sole discretion of Geospace Engineering Resources International

All parameters are specified at 25°C in the horizontal position unless otherwise stated.

Open-circuit sensitivity 2.18 V/in/s (85.8 V/m/s) +5%, -3.5%

Frequency 10 Hz ±3.5%

Spurious frequency >240 Hz

Distortion from horizontal to ± 3tilt <0.15% measured at 12 Hz with 0.7 in/s p-p

Distortion at horizontal 0.05% TYPICAL

Open-circuit damping 0.48 to 0.54

Coil resistance 1800 Ohm ±5%

Sensitivity with 20K load 2.00 V/in/s (78.7 V/m/s) TYPICAL

Damping with 20K load 0.70 TYPICAL