Geodesic Sensor Net - Replacing Sponges (HCGSN); Position Sponge in Pedestal

9: Replacing GSN Parts
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Geodesic Sensor Net Technical Manual S-MAN-200-GSNR-001 • January 31, 2007
Replacing Sponges (HCGSN)
Each HCGSN comes with 10 replacement sponges. Sponges must be specially
prepared by the manufacturer; for additional replacement sponges (Figure 9-15),
contact EGI.
You should replace only sponges that have fallen out of their pedestals. Do not
remove
a sponge from a pedestal and replace it, because you could damage the electrode.
No disassembly and no special tools are required to replace sponges.
Position Sponge in Pedestal
1 Position the dry sponge in the pedestal so that the electrode sits in the hole in
the middle of the sponge.
2 Make sure the sponge is not tilted (Figure 9-16).
Figure 9-15. Replacement sponges
Figure 9-16. In the empty pedestal, place the sponge upright
Replace only sponges that have
fallen out of their pedestals
Position the sponge upright so that the
electrode sits in the sponge’s center