SubSurface Instruments LD-18, Руководство по эксплуатации

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Use of this detector
This detector has been designed to identify the point of water leak by detecting the water leaking sound,
which is produced out of a waterworks pipe buried under the ground, from the ground surface.
<Overview of detector>
With each of low frequency zone and high frequency zone of output frequency band set at four stages,
noise reduction water leak detector
LD-18
is capable of flexibly dealing with the difference in the water
leak sound caused by the difference in the pipe type and with the noise produced on the field, by selecting
a combination that can be easily identified out of 19 different combinations. Furthermore, it permits visual
judgment of the noise level by level bar display. In addition, with noise eliminating function, it is possible
to eliminate accidental noise such as vehicle passing sound and bowwow. This water leak detector
LD-18
is capable of discriminating water leak sound to a level that is higher than that of conventional
detector.
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