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  • Shanghai Eastimage Equipment Co., Ltd
  • Address : NO.111, Zhiye Road, Pudong New District, Shanghai, P.R.China
  • Phone : +86-21-33909331
  • Email : sales@eastimage.com.cn

TYPES OF METAL DETECTORS

1) TR (Transmitter/Receiver) is the earliest technology primarily based on Induction Balance (IB) principle of metal detection. Modern detectors do not use this kind of technology.
 
2) BFO (Beat Frequency Oscillation) is an older technology however comparatively cheap to make. These sort of detectors had a poor capability to tell apart between different types of metals. Usually used in cheaper models of detectors and not used by mainstream hobbyists.
 
3) VLF (Very Low Frequency) detectors are the most typical detectors and great for their capability in distinguishing between several types of metals. VLF detectors detect metal by analyzing the phase shift within the returned signal from the metallic object.
 
4) PI (Pulse Induction) detectors transmit out a pulse of RF energy and watch for a returned signal (similar to radar). All these detectors are primarily utilized in extremely mineralized soils such as seashores or salt water as a result of they can not distinguish between different types of metals. The benefit of PI metal detectors is their capacity to detect very deep metal targets.
 
FEATURES OF DETECTORS:
 
1) The Detection Alert function could be very important. In cheaper VLF models the detector emits a continuing audio tone and when the detector finds a metal target the audio tone changes. This detection alert may be very laborious to determine if a goal has been found because a person should distinguish between the different tones.The opposite type of detection alert is an audio beep when the detector has found a metal target. This is extra helpful for hobbyists new to the sport as a result of you'll hear a special audio tone for various targets and only when a target is detected.
 
2) Target ID: Some detectors is not going to only tell when it has detected a metal target but it can additionally decide what sort of metal goal it has detected (iron, penny, nickel, dime, quarter, silver, gold, pull tab, and so forth). Target ID could be very helpful for the metal detectorist because it allows them to know what kind of metal the target is before digging it up.Nevertheless, be aware that some Target ID's aren't correct and we suggest that once you start out metal detecting you dig each sign to get a feel for your new metal detector.
 


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