6
Lmic Acoustic Leak Sounding System
The Lmic (pronounced “el mike“) is an easy-to-use, low cost, electronic listening stick
and ground microphone combined. It is ideal for general leak sounding operations
and can be fitted with either a tripod foot (for use as a ground microphone) or probe
rods (for sounding at fittings or in soft ground).
The control unit is hand-held with a “trigger” operation and a volume/sensitivity rotary
control. An LED indicates operation and battery status. It can be used to confirm
the position of underground leaks audibly from ground level; sound pipe fittings;
penetrate soft ground to listen for leaks or carry out traditional acoustic surveys.
Equipment list
1 Lmic hand held control unit
2 Microphone unit with cable
3 Tripod unit
4 2 probe rods
5 AC adapter
6 Headphones
7 Carry bag
8 Instruction manual
The Lmic equipment is shown here.
(Note the battery charger and
manual are not shown).
Lmic Controls
LED
Rotary volume/sensitivity
control
Headphones /battery
charger connection
Trigger
switch
Microphone
connection
1
3
6
4
2
7
Bottom view of the Lmic showing the
trigger switch and the electrical
connections for the headphones/battery
charger and microphone.
Top view of the Lmic showing the rotary
control for volume and sensitivity.
