Minelab Eureka Gold Manual de servicio descargar pdf (Pagina 15)

Page 26 The Minelab Eureka Gold

9. Detecting Techniques

For best results with the Eureka Gold, it is recommended that you learn

some basic detecting techniques such as sweeping, pinpointing and

digging targets.

9.1 Sweeping

One of the most important detecting techniques, and perhaps one of the

hardest to perfect, is the sweeping of the coil across the surface of the

ground.

The Eureka Gold is a motion detector which means that in order to detect

a target the coil must be moving. It is recommended that you use a

sweeping motion for the coil while detecting (see figure 18). It is

essential that the coil sweeps are overlapped in order to ensure that all

ground is searched.

Figure 18 - Sweeping the Coil

Note: Each sweep of the coil should overlap the last one. This will ensure

good ground coverage.

Page 27 The Minelab Eureka Gold

Sweeping is carried out in a uniform motion along the ground to cover the

search area. Keep the coil parallel to the ground at all times and be aware

that there is a tendency for the coil to be raised at the end of each sweep

(see figure 18). Each sweep from one side of the body to the other should

take between 2 and 4 seconds to complete. This speed will depend on the

soil conditions and on the area in which you are operating. Variation in coil

height at the end of each swing can cause confusing sounds and will

reduce detection depth. Increased noise can also result from hitting rocks,

etc. Where possible, keeping the coil in contact with the ground will

increase detection depth and sensitivity to very small targets.

9.2 Pinpointing the Target

When a target has been detected, it is necessary to accurately determine

its position to enable the operator to recover it quickly and minimise any

damage to the environment.

You should switch back to the Fixed Ground Balance position to pinpoint

the actual location of the detected target. Sweep the coil over the general

area taking note of where the strongest signal is received as the coil is

moved over the target. By decreasing the length of the sweep it should be

possible to draw an imaginary line in the ground where the strongest

signal is located (see figure 19). The side of your boot can be used to mark

the ground along this line.

Figure 19 - Pinpointing the Target

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