S-400

The S-400 seismic sensor (hydraulic fracturing sensor)

3-axis, 4.5-240Hz seismic sensor
High Sensitivity 368 V/m/sec.
Velocity signal output.
Minimum recording signal 1.3nm/sec.
Damping 0.57
Borehole Type, up to 100m (Shallow Borehole).
Only 50mm diameter
Elastic packer mounting.
Ideal for Hydraulic Fracturing Recording (Tested)
Operating temperature -40 to +200oC
Matching with Our digitizers / recorders
Optional 1Hz / 3000V/m/s available

This type of seismometer has been designed for microseismic events recording during hydraulic fracturing reservoir experiments. It uses quad geophone strings per axis, in order to maximize sensitivity and minimize noise level. Ideally when paired with our SRi-32 digitizer / recorder.

Brochure

Charactristics:

MODEL S400A (without electronics)

Number of channels:	3channels, Vert ical, North-South, East-West
Channel Resistance	13600 OHms
Sensitivity	368 V/m/s
Natural Frequenc y	4.5H z (10Hz, 14Hz, 28Hz, 35Hz under request)
Open cir cui t damping	0.76
Cable length	Standard 20m, up to 200m
Size	460mm length, 50mm diameter
Weight (geophone enclosure)	6.3KG

MODEL S400B (with preamplif ier)

Number of channels:	3channels, Vert ical, North-South, East-West
Channel Resistance	500 OHms
Sensitivity	3000 V/m/s
Natural Frequenc y	4.5H z (10Hz, 14Hz, 28Hz, 35Hz under request)
Power	12Vdc, 41mA (0.49W)
Cable length	Standard 20m, up to 200m
Size	460mm length, 50mm diameter
Weight (geophone enclosure)	6.3KG

MODEL S400C (with signal conditioning electronics - bandwidth extension)

Number of channels:	3channels, Vert ical, North-South, East-West
Channel Resistance	500 OHms
Sensitivity	3000 V/m/s
Natural Frequenc y	1Hz (0.5H z, 0.2Hz under request)
Power	12Vdc, 43mA (0.49W)
Cable length	Standard 20m, up to 200m
Size	460mm length, 50mm diameter
Weight (geophone enclosure)	6.3KG

ALL MODELS GEN ER AL CHAR ACTERISTICS

Mass lock , centering	Not required
Temperature range	-20 to +70oC
Humidity	100%, IP67 enclosure
Submersible	1000 meters