Thames & Kosmos Spy Labs: Pocket Metal Detector Handleiding

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Dear Parents & Supervising Adults,Your Metal Detector

A Nose for Buried Treasures

A metal detector is an electronic instrument that

can detect the presence of metal nearby. Metal

detectors are useful for detective work, as they

can help an investigator find metal items hidden

within objects or buried underground (as long as

they aren’t too small or too deep). You can use your

metal detector to find lost coins in the sand, or you

can use it to detect any concealed metal, like a key

in

Getting Started

First, have an adult insert the two batteries into

the device by following these steps:

1. Use a Phillips-head screwdriver to loosen the

screw on the battery compartment and lift off the

cover. The screw will remain in the cover.

2. Remove the old batteries (if applicable) and

insert two new AAA batteries (1.5-volt, type LR03).

Pay attention to the correct polarity (+ and –).

3. Close the battery compartment and screw the

cover back on.

Now you can switch on the device. To adjust the

sensitivity of the metal detector, turn the small dial

on top. It will beep to indicate that it is ready for

use. Keep turning the dial until the beeping stops,

which means it has reached its most sensitive

setting.

How Your Metal Detector Works

Your metal detector has two coils of metal wire in

the circular end: the transmitter coil and the

receiver coil. The batteries cause electricity to flow

through the transmitter coil, causing a magnetic

field to form around the transmitter coil. When you

move the metal detector over a metal object, the

moving magnetic field creates an electric current

inside the metal object. This in turn creates a

magnetic field all around the metal object. This

magnetic field creates an electric current inside

the second coil (the receiver coil) in the metal

detector. The electric current then flows to a circuit

with a loudspeaker, causing the alarm to sound. As

the transmitter coil moves closer to the metal, the

magnetic field around the object becomes stronger,

which means more electricity flows to the speaker,

making the alarm sound louder.

Most metal detectors work the same way. These

devices are often used by treasure hunters, but

they are also used at airports and important

places or events to ensure that no one can sneak

in any dangerous metallic items.

Sensitivity dial

Insert the

batteries and

screw the cover

back on.

Cover

Base

Before starting the experiments, please read the

manual together with your child and discuss the

safety instructions. Support your child with advice

and a helping hand when performing the experiments

outlined in the manual.

Protect the metal detector from moisture. Only adults

should install and replace the batteries. Make sure to

keep the packaging and instructions as they contain

important information.

Pocket

Metal

Detector

Contents

WARNING! Not suitable for children under

3 years. Choking hazard — small parts may be

swallowed or inhaled.

2345

Product specificaties