Measuring instruments, geophysical instruments
GFA 50/100

Borehole 3D Geophones GFA 50/100

category:Seismic / Borehole 3D Geophones
item:GFA 50/100
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GFA 50/100 3D borehole geo-phone is realized with 3x high sensitive geophones (nat.freq.10 Hz- 1 vertical and 2 horizontal sensors) oriented according to a triad of orthogonal Cartesian axes XYZ. Delivered with a cleat assembly to sustain its weight at the requested depth (GFA cable is graduated in meters), this borehole geophone has a pneumatic-mechanical clamping system. 

Applications: DOWN HOLE / CROSSHOLE / Vs30

-3 x 10 Hz geophones (1vert.+2horiz.)

-cable length 50 or 100m, graduation 1 meter  

-for boreholes with diameter from 55 and 110mm (larger diam. on request)

-probe dimensions: diam. 51mm, length 570mm

-cable reel dimensions: 540x400x250mm

-total weight (reel+cable+probe): less then 12 kg for Mod. GFA-50

-Cannon NK2721C or Souriau connector (other on request)

-cable reel with 50/100 m of cable

-pneumatic-mechanical clamping (with manual pump included)

-air purge valve