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Fig. 4
5.When the white LED just lights and the motor frequency just reaches highest
please keep the pinpointer motionless and press the balance button lightly.
Then the pinponter will balance again and the sensitivity will decline. At this
time if the LED doesn't light and the motor doesn't vibrate it means the detec-
tion range turns smaller.
6.Please let the front head of the probe approach the coin once again and the
LED will light and the motor will vibrate, then will detect once again.
7.The function of auto balance is very important. The air balance and the
sensitivity will be highest if far away from the metal and ground. If the vicinity of
the metal is at a complex detection environment the pinpointer will balance the
influence of the environment and reduces the detection range to achieve the
accurate positioning.
8.The pinpointer is an effective waterproof device. You can use the pinpointer if
need to immerse it in the water.
Field Operation
After you get accustomed to the basic operation of the pinpointer you can carry
out field operations outdoors. Because the field exploration is relatively com-
plex, the soil composition of the detection area, the composition, size, shape
and degree of oxidation of the underground metal will all affect the detection
result. This chapter is just about the general steps of the field detection. The
operator needs practice repeatedly to accumulate experience to achieve good
results.
1.In general, the pinpointer should be used cooperatively with the scanning
metal detector. The general metal detector needs moving to scan with higher
sensitivity but the target position is often not accurate, so it is difficult for
mining. You can use the pinpointer to determine the exact location of the target.
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