• SD7M-10
• SN5A-5

SD7M-10

The SD7M-10 is a 10 Hz natural frequency high precision geophone that has the advantage of tight tolerances, high spurious frequency and low distortion. The geophone can be packaged in a land or marsh case and can be provided in various string configurations with standard geophone connector options.

SN5A-5

The SN5A-5 is a 5 Hz natural frequency high sensitivity geophone. It is packaged in a marsh case and is ideally suited for nodal operation but can also be used with cable acquisition systems. The sensor is provided with a standard 5515 geophone connector.

• SD7M-10
• SN5A-5

SD7M-10

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Sensor:	Vertical 10 Hz
Operating Temperature:	-40 °C to +80 °C
Size:	3.2 cm x 2.54 cm
Weight:	0.011 kg (0.02 lbs)
Natural Frequency	10 ± 2.5% Hz
Open Circuit Damping:	0.267 ± 2.5%
Open Circuit Sensitivity	28.8 ± 2.5% V/m/s
Coil Resistance:	375 ± 2.5% ohms
Total Harmonic Distortion:	<0.1%
Spurious Frequency	>240 Hz

SN5A-5

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Sensor:	Vertical 5Hz high-sensitivity geophone
Operating Temperature:	-40 °C to +80 °C
Size:	4.15 cm x 3.05 cm
Weight:	0.0227 kg (0.05 lbs)
Natural Frequency	5 ± 7.5% Hz
Open Circuit Damping:	0.6 ± 7.5%
Open Circuit Sensitivity	80 ± 5% V/m/s
Coil Resistance:	1850 ± 5% ohms
Total Harmonic Distortion:	<0.1%
Spurious Frequency	>150 Hz

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Alphageo purchases Quantum® nodes for first HyperQ™ QC project in India

INOVA Geophysical delivered and commissioned 5,000 Quantum nodes to Alphageo Ltd. for a seismic survey located in a densely forested and hilly terrain in North East India.

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