Minelab Safari Manuál s instrukcemi stáhnout pdf (Strana 5)

3

Metal detectors create an electromagnetic

(EM) eld around the coil, which penetrates

the ground. Because metal is conductive it

causes a change in this eld. The detector

senses this change through the coil and

sends a signal back to the control box,

alerting the operator.

Metal detectors can determine the size, shape

and composition of metallic objects beneath

the coil. Typically, the larger the object, the

easier it is to detect.

A metal detector’s EM operating frequencies

are measured in kilohertz (kHz). Low

frequency EM elds (e.g. 1.5kHz) penetrate

the ground deeply, but sensitivity to smaller

targets is low. High frequency EM elds (e.g.

65kHz) have a shallower depth of penetration,

but sensitivity to small targets is high.

Safari’s multiple frequency operation provides

the advantage of both; good depth and high

sensitivity.

How Metal Detectors Work

Item Number: 4901 - 0070

Revision: 1.1

1 2 3 4 5 6 7 8 9 10 ... 43 44

Komentáře k této Příručce

Žádné komentáře