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Appendix A
Installing the Gecko Blast or SMA
The Gecko Blast and SMA are designed to measure large vibrations. You can simply sit them
on a surface to measure ground motion, but we recommend you bolt the sensors down.
To install the Blast in soft soil, screw the three included spikes into the holes in the base,
which may require you to unscrew the standard adjustable feet. Push the sensor and spikes
into the soil by hand as far as you can, using the bubble on the lid to level the sensor as
close to flat as is practical (being perfectly level is not critical).
To attach the Blast or SMA to a hard surface (e.g. rock or concrete) we recommend you use
the included threaded rod, nut and anchor system through the centre of the sensor, along
with the standard feet for level adjustment. You'll need a hammer drill, a hammer, and the
included installation kit.
1
1.
Using the supplied 10mm masonry bit and your hammer drill, make a vertical hole for
the drop-in anchor.
Tip: measure the depth of the anchor and place some tape on the drill bit so you know how deep to drill
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3
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