Geophone Leak Detection Systyem

For best results, place the sensing  head firmly against the surface being explored. While it does not have to be on a horizontal plane, the instrument works best when it is free standing, since the circulation of blood in the  hands will set up detectable vibrations. The instrument performs equally well on soil, ice, hard packed snow, pavement or any solid substance. Light packed snow or grassy surfaces tends to distort or muffle the leak sounds. In these cases it is suggested that you dig down to solid ground or drive a metal rod into the ground, leaving approximately two inches of the rod above the ground.  Place the disc on top of the rod and listen. In addition to the rush of water you will some times hear an erratic clicking sound. This is caused by rocks and gravel banging against the pipe in the high pressure stream of leaking water. Remember that the Geophone is designed and built for detection of vibrations in solid substances, not in gaseous media.