How to Build a Underground Hearing Device
Underground listening detectors are made to pick up underground vibrations that aid in locating plumbing leaks by finding septic tanks, pinpointing water leakages, detecting buried utilities, finding pipe blockages, locating sewer lines, and underground weather conditions. The detector also locates the bubble sound created when air escapes from a leak into the earth. In constructing an underground detector, it's important to figure out the deepest depth to which any specific device can be used for.
The following items are needed:
- EMS
- Fault detectors and recorders
- Ground penetrating radar
- Conductive bonding agent
- Brass diaphragm
- Output lead wire
- Amplifier receiver
- Level meter
1. Take an electronic marker system, also known as EMS, along with underground structures to set up for future locations. Fault detectors and recorders are also needed because they expose and record glitches that may occur in power lines. A ground penetrating radar is needed to locate subsurface information by using high frequency pulsed EM waves, or electromagnetic waves. All of these detectors are made of metal detectors and locating markers, sound detectors, RF receivers and RF locators with one transmitter.
2. Construct an acoustic pick-up means containing a ceramic audio tone transducer. Then, attach a metalized piezo-ceramic wafer by using a conductive bonding agent to a brass diaphragm to form the tone transducer. Be sure to make a brass diaphragm with a larger circular diameter compared to the metalized piezo-ceramic wafer. Attach the drawn out rod to the brass diaphragm of acoustic pick-up by use of a threaded attachment stud. Put the audio tone transducer assembly in a waterproof elastomeric material made of an urethane rubber.
3. Join one end of the first output lead wire of the detector to the brass diaphragm. Then connect the other end to the amplifier-receiver construction, while leaving one end of the second output lead wire connected to the metalized piezo-ceramic wafer. Join the other end to the amplifier-receiver. In a parallel position to the piezo-ceramic wafer and brass diaphragm. Place a resistor in between the first two output lead wires. Position a level meter on top of the amplifier-receiver that'll show visual leak signals and place a head phone set onto the acoustic pick-up apparatus to allow hearing of the leaks.
4. Position the device to begin trying out the newly constructed underground listening device.