2. What does the word Detector means?
•a device for detecting the
presence of electromagnetic
waves or of radioactivity.
3. METAL DETECTOR
• It triggers the “bleep! bleep! bleep!” sound when objects
with parts that are magnetic in nature move past it.
• Metal detectors are useful for finding metal objects on the
surface, underground, and underwater.
• A device that detects the presence of hidden metal.
• Metal detectors wrok by creating a magnetic field aound
the electrical search coil, which spreads out to an average
depth about 10 inches. If conductive material is within the
detector’s range, the electromagnetic signature of the
material disrupts the magnetic field, The detector’s visual
and audio alerts let you know you have found something.
4.
5. Parts of a Metal Detector
1.The Control Box
- this houses the electronic components of
the devide. This includes the signal processing
circuity, audio circuity, the display, batteries, as
well as the various knobs and button controls.
2. Search Coil
-is the part of a metal detector that detects
metal objects that are located in the ground. Also
called as an “Antenna”.
6. 2 Types of Coil in a Metal Detector
1.Transmitter Coil
-outer coil loop. Electricity is sent along this
wire.
2. Reciever Coil
-inner coil loop contains another coil of wire.
This wire acts as an antenna to pick up and amplify
frequencies coming from target objects in the
ground.
7. 3. Shaft
-This connects the search coil with the control box.
4. Grip
-this is where the metal detector where the operartor
places their hand in order to hold the device steady during
use.
5. Arm Cuff
-connects directly to the shaft and prevents the
metal detector from being unweildy as the search coil is
swunf back and forth over the ground.
9. The Different Types of Metal Detectors
1. Very Low Frequency (VLF) Metal Detectors
• This is the most
common type of metal
detecting
technology.This type
uses two coils: one for
the transmitter and one
for the reciever.
10. 2. Pulse Induction (PI) Detectors
-in contrast to the VLF detector’s
two coil design, Pulse Induction (PI)
metal detectors have juse a single coil.
This one coil transits the magnetic
field and detects conductive materials.
PI’s detector’s single coil design isless
affected by ground mineralization than
VLF detectors, which is why it’s better
to use PI detectors when searching
beaches, rivers or underwater.
Metal Detector
11. 3. Specialty Detectors
-this is the ability to use multiple frequencies
simultaniously. with calibrated frequencies, you
can simultaniously detect small and large items at
various depths.
12. • Multi-frequency Metal Detectors - can be used in cities, on the
beach, in rivers or lakes.
• Gold Metal Detectors - designed specifically to find gold. This has a
higher frequency range than the other detectors. This higher fency
won’t set the detectors’ alerts off when they encounter salts and other
minerals commonly detected while searching gold.
• Waterproof Metal Detectors- designed to search in the shallows
at the beach or in a river, to fully submersible metal detectors with
waterproof coils and sealed controls that you can use while scuba
diving.
13. MEMBERS:
Asuncion, Nympha
Laj-han, Mark Daniel
Binayog, Rose Marie
Dela Cruz, John Paul
Dela Cruz, Gretchen
Igadna, Sheryl
Gumitang, Lander
Attaban, Josan Marie
Fernando, Jayson
