SubSurface Leak Detection LD-12 Professional's Plus Operating Instructions

LD-12 Professional's Plus
Water Leak Detector
Operating Instructions
1.
LD-12 Professional's Plus Water Leak Detector
includes accessories for water leak "pinpointing" and
water leak "surveying":
Ground Miking to pinpoint a leak in a
hydrant line
3.
WARNING! Do not drop the sensor hard on to
asphalt, concrete, valves, or other surfaces from
2-3 feet or more. The sensor has a piezo electric
ceramic element, and it can be broken by hard
drops or harsh treatment.
4.
The amplifier has a large Meter Display, Volume
Control, Adjustable Filters, ON/OFF Power Switch,
Battery Power Switch, and a Light Switch:
Amplifier Top View
Meter
Display
Adjustable Filters
5.
The headphones jack is "power switched".
If the headphones are not plugged in, the
amplifier's power does not go ON:
Sensor
Cable
Jack
Headphones Jack
Leak Surveying by listening at a
hydrant with magnet base
Leak Surveying by listening at a
meter with contact rod
Volume
Control
ON/OFF
Power
Battery Power
Amplifier
Side
View
2.
WARNING! The LD-12 is very sensitive and can
damage hearing if not used properly. Keep the sensor
motionless when the Mute Switch is depressed, and
keep the Volume below 25% when attaching to a
hydrant, meter, or valve that may be very loud.
Standard Accessories
for LD-12
2
1 Amplifier with Meter Display and Filter Controls
2 Ground Microphone and Handswitch (Mute)
3 Aviation-Grade Stereo Headphones
4 Heavy-Duty ABS Plastic Carrying Case
Magnet Base
5
3-Section Contact Rod
6
Nut Driver (to remove base)
7
Instruction Manual (not shown)
8
6.
There are 3 Low Filters and 3 High Filters.
The LD-12 user hears all of the sounds between
the two filters that are ON. All sounds that are in
frequencies lower or higher are filtered out.
7.
The Limitter Switch
cuts off all sounds
greater than 110 dB
in the ON position.
The Filter-Thru
Switch bypasses
all of the filtering
in the ON position.
8.
The meter on the amplifier is used for comparing
the loudness at different locations when the user's
hearing can not tell which location is louder.
Adjust the Volume Control to move the meter needle
to a midrange position. Then compare meter
readings at different locations.
LD-12
Quick Reference
Guide
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