SEISMIC

GEA24

    seismic > refraction, bedrock, seismic tomography, MASW, VS30, HVSR, downhole/crosshole surveys

GEA24 is a compact-sized 24 channel seismograph (can be serialised for a total of 48 chan.) with a 24 bit data acquisition board and USB interface for external PC (not included in the standard supply). Suitable for refraction, seismic tomography, downhole, crosshole, Vs30, MASW, shallow reflection applications, GEA-24 is a reliable, affordable solution for all professional uses. Connected to your PC laptop or tablet, GEA24 becomes a seismic tool that is simple to use, but with top-level performance. An external 12V battery (heavy and bulky) no longer needed: GEA24 consumes very little and is powered directly from the PC, guaranteeing a long day of work on-site. GEA24 can acquire using geophones with any resonance frequency (even 1Hz). To get 48 simultaneous channels, just connect two GEA24s to the same PC, perhaps using the Radiotrigger accessory and using a land streamer or a hydrophone chain. Versatility is what makes this our best selling product. 

Number of channels: 24 channels+trigger (chan. AUX) - 2 units can be serialised for a total of 48 channels 

Data Conversion : True 24 bit analogue/Digital Sigma-Delta converter (compatible with analogue geophones at any resonance frequency) 

Stacking: Unlimited number of stacking

Input impedance: 2MOhm // 22nF

Dynamic range: 144dB (system); >117dB (instant, measured @1ksps)

Distortion: 0.007% @16kHz

Trigger: Normally closed contact, normally open (i.e. for use with explosives), analogue signal (starter geophone, piezoelectric starter), TTL trigger. Trigger sensitivity adjustable via software

accessories

vs30
exploration seismic accessories

VERTICAL GEOPHONES

 

In standard shell, 75mm steel rod, 1m cable terminated with split spring connector (single clip).

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masw
exploration seismic accessories

HORIZONTAL GEOPHONES

 

In standard shell with bubble level, 75mm steel rod, 1m cable terminated with split spring connector (single clip).

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exploration seismic accessories

SEISMIC CABLES

 

PASI offers a complete range of 12 or 24-channel seismic cables for refraction/shallow reflection.

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exploration seismic accessories

TRIGGER EXTENSION CABLE

 

Shielded cable on reel, length 130m, for starter geophone / hammer switch (trigger extension cable).

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exploration seismic accessories

STARTER GEOPHONE

 

Starter geophone with connecting cable. The ideal solution for having a perfect trigger and acquisition. 
Standard cable length is 1m (longer lengths available upon request).

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exploration seismic accessories

PIEZOELECTRIC STARTER

 

Piezoelectric starter (hammer switch), with cable. Supplied with spare piezoelectrics.

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exploration seismic accessories

SLEDGE HAMMER

 

6kg sledge hammer. Can be used either with a hammer switch (to be fixed to the handle of the hammer as in the photo) or in combination with the starter geophone.

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exploration seismic accessories

ISOTTA SEISMIC ENERGIZER

 

The Isotta seismic energizer is made up of a stainless steel cylindrical body, with a front section that may be unscrewed (cartridge chamber), suitable to contain an 8-bore blank (or industrial type) cartridge, easily found in gun shops. This cartridge chamber is without barrel, thus permitting the axial ejection of the energy wave, caused by the explosion of the cartridge, generating type 'p' (longitudinal) and type 's' (transversal) waves.

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exploration seismic accessories

STRIKING PLATE

 

Aluminium striking plate with carrying handle, dim. 20x20x5 cm.
Also available in polyzene version (upon request).

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exploration seismic accessories

HORIZONTAL WAVES STRIKING PLATE

 

Iron/aluminium horizontal wave striking plate.

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exploration seismic accessories

GPS OPTION

 

USB GPS antenna; it can be used for geopositioning of an instrument connected to PC (es. GEA24, GEA3, RM-1, Gemini-2) or for synchronization of acquisitions among more instruments (es. 2 or more Gemini-2s).

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exploration seismic accessories

RADIO TRIGGER

 

Versatile, user friendly instrument, designed to "trigger" the acquisition of the seismograph via radio, transmitting in the free European band 869.4 - 869.65 MHz (free use license - exempt from government taxes).

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exploration seismic accessories

GEOPHONE 3DLG-2

 

3D Land Geophone is the accessory to perform MASW, HVSR and Vibration Analysis.

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exploration seismic accessories

GEOPHONE GFA

 

Borehole 3D geophone with pneumatic-mechanical clamping system. Cable is graduated in meter.

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exploration seismic accessories

CHE - CROSSHOLE ENERGIZER

 

Specially designed for small-scale crosshole surveys, this compact hammer can be used to generate both P and S waves.

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exploration seismic accessories

MULTITRIGGER BOX

 

This accessory is required to synchronize the trigger input between two separate acquisition units; compatible with Gemini-2, GEA3, GEA24.

REQUEST A QUOTATION

accessories

vs30
exploration seismic accessories

VERTICAL GEOPHONES

 

In standard shell, 75mm steel rod, 1m cable terminated with split spring connector (single clip).

FIND OUT MORE    REQUEST A QUOTATION

masw
exploration seismic accessories

HORIZONTAL GEOPHONES

 

In standard shell with bubble level, 75mm steel rod, 1m cable terminated with split spring connector (single clip).

FIND OUT MORE    REQUEST A QUOTATION

exploration seismic accessories

SEISMIC CABLES

 

PASI offers a complete range of 12 or 24-channel seismic cables for refraction/shallow reflection.

FIND OUT MORE    REQUEST A QUOTATION

exploration seismic accessories

TRIGGER EXTENSION CABLE

 

Shielded cable on reel, length 130m, for starter geophone / hammer switch (trigger extension cable).

REQUEST A QUOTATION

exploration seismic accessories

STARTER GEOPHONE

 

Starter geophone with connecting cable. The ideal solution for having a perfect trigger and acquisition. 
Standard cable length is 1m (longer lengths available upon request).

REQUEST A QUOTATION

exploration seismic accessories

PIEZOELECTRIC STARTER

 

Piezoelectric starter (hammer switch), with cable. Supplied with spare piezoelectrics.

REQUEST A QUOTATION

exploration seismic accessories

SLEDGE HAMMER

 

6kg sledge hammer. Can be used either with a hammer switch (to be fixed to the handle of the hammer as in the photo) or in combination with the starter geophone.

REQUEST A QUOTATION

exploration seismic accessories

ISOTTA SEISMIC ENERGIZER

 

The Isotta seismic energizer is made up of a stainless steel cylindrical body, with a front section that may be unscrewed (cartridge chamber), suitable to contain an 8-bore blank (or industrial type) cartridge, easily found in gun shops. This cartridge chamber is without barrel, thus permitting the axial ejection of the energy wave, caused by the explosion of the cartridge, generating type 'p' (longitudinal) and type 's' (transversal) waves.

FIND OUT MORE    REQUEST A QUOTATION

exploration seismic accessories

STRIKING PLATE

 

Aluminium striking plate with carrying handle, dim. 20x20x5 cm.
Also available in polyzene version (upon request).

REQUEST A QUOTATION

exploration seismic accessories

HORIZONTAL WAVES STRIKING PLATE

 

Iron/aluminium horizontal wave striking plate.

REQUEST A QUOTATION

exploration seismic accessories

GPS OPTION

 

USB GPS antenna; it can be used for geopositioning of an instrument connected to PC (es. GEA24, GEA3, RM-1, Gemini-2) or for synchronization of acquisitions among more instruments (es. 2 or more Gemini-2s).

REQUEST A QUOTATION

exploration seismic accessories

RADIO TRIGGER

 

Versatile, user friendly instrument, designed to "trigger" the acquisition of the seismograph via radio, transmitting in the free European band 869.4 - 869.65 MHz (free use license - exempt from government taxes).

FIND OUT MORE    REQUEST A QUOTATION

exploration seismic accessories

GEOPHONE 3DLG-2

 

3D Land Geophone is the accessory to perform MASW, HVSR and Vibration Analysis.

FIND OUT MORE    REQUEST A QUOTATION

exploration seismic accessories

GEOPHONE GFA

 

Borehole 3D geophone with pneumatic-mechanical clamping system. Cable is graduated in meter.

FIND OUT MORE    REQUEST A QUOTATION

exploration seismic accessories

CHE - CROSSHOLE ENERGIZER

 

Specially designed for small-scale crosshole surveys, this compact hammer can be used to generate both P and S waves.

FIND OUT MORE    REQUEST A QUOTATION

exploration seismic accessories

MULTITRIGGER BOX

 

This accessory is required to synchronize the trigger input between two separate acquisition units; compatible with Gemini-2, GEA3, GEA24.

REQUEST A QUOTATION