Minelab F3 Especificações descarregar pdf (Página 34)

F3 COMPACT Operations Manual

4.5.2 STEP 2 Determine Centre of Target

In Step 1, the area of a target was determined. If the metal in the

target is sufficiently small, the area mapped will also be small and

therefore it is a relatively simple matter to pinpoint the centre of the

target.

To determine the centre, for larger targets, the coil should be

slowly moved across the mapped area. As the coil approaches the

centre of the target, the threshold tone will increase to a maximum

volume (pitch may be high or low depending on the composition of

the metal). Where maximum volume is achieved, the coil can be

considered to be above the centre of the target.

Once confirmed, local Standard Operating Procedures should be

followed to mark the target.

Figure 22: Determine target centre

NOTE

An operator can confirm that the centre of a target has been

located by moving the coil slightly in any direction, and returning

to the centre. In doing so the volume of the Threshold Tone should

decrease from maximum, as the coil leaves the centre, and return to

maximum as the coil returns to the centre.

Maximum Volume

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Minelab F3 Especificações Página 34

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