what does discrimination mean on a metal detector

Discrimination on a metal detector refers to its ability to differentiate between various types of metals based on their conductivity or other properties. It's a feature that allows users to selectively accept or reject certain types of targets while detecting.

How Discrimination Works:


Conductivity Levels: Different metals conduct electricity differently. For example, most coins made of copper or silver have higher conductivity compared to iron or steel, which are less conductive.
Discrimination Settings: Metal detectors have discrimination settings that enable users to set a threshold for the types of metals they want the detector to respond to. This feature helps in ignoring undesirable targets.

Target ID: Many detectors have a visual or auditory Target ID system that displays or emits different tones for various types of metals. This can help users determine the probable type of metal being detected based on the discrimination pattern set.
Notch Discrimination: Some detectors allow for notch discrimination, where users can specify particular segments or ranges of conductivity they wish to accept or reject. For instance, ignoring iron signals while focusing on higher conductivity signals like coins or gold.

Benefits of Discrimination:


Target Selection: Discrimination helps users focus on specific targets they're interested in, such as coins or relics, while ignoring trash or less valuable items like bottle caps or nails.
Efficiency: It increases efficiency by reducing unnecessary digging for undesired targets, making metal detecting more productive and enjoyable.

However, it's essential to note that discrimination isn't foolproof. Sometimes, valuable targets might fall within the discriminated range, or highly corroded or deep targets might not accurately register their conductivity. Therefore, it's advisable to use discrimination as a guide rather than a definitive determinant while metal detecting.

what does discrimination mean on a metal detector

Discrimination is the detector's ability to search only certain metals. Without discrimination, a metal detector would give an audible signal even in aluminum foil (a highly conductive metal) and the seeker would not be able to go far without-and fill the pockets with objects found but without value.
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A favorite proverb of searchers treasures is that discrimination should be used with discrimination. Discrimination on a metal detector should be set high enough to make the detector to ignore false alarms (i.e. to aluminum), but at the same time, any gold could no longer be found, it has a lower conductivity of aluminium.

Most detectors have a scale of 0-10 at discrimination settings. Users will find their own favorite settings, and depending on the land who do their own research. For example, if the search on the ground, many prefer not to use any discrimination because the land did not have much rubbish.

In case you are looking for in a park, a setting of about 2-3, because in general the discrimination of 4 out of 10, metal detectors may not find gold. Of course all these little tips for beginners above, concerning discrimination, are relative.

These detectors are based on a grid of concentric search coils with 2. Outdoor coil (coil transmission) is designed to generate an electromagnetic field which when it detects an object load and it's magnetic il in turn generates a low-intensity electromagnetic field what is with the field generated by the coil exterior (when the field generated by the coil is minimal object is generated field and vice versa). This electromagnetic field is detected by the indoor coil (coil reception)
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Pi (Pulse Induction)



These detectors are based on a grid search with a coil (single released technology) or two concentric coils (double pulse technology). Search coil generates a load metallic object magnets, this in turn engenders its own electromagnetic field makes commandline with initial torque. This couple is analyzed in the break between two pulses by the detector.

Recommendation: this type of detector is recommended for deep searches. Is a search object detector intended for very small sizes not buried at great depths. Represents the most suitable solution for detection of metallic treasures, vases, various objects. It is used also in archeology and security.

BFO (Beat Frequency Oscillator)

This detector is based on a detection coil what swings with the same frequency, synchronous with a precision oscillator located inside the detector. When a metallic object is in the range of the search coil (ii) its frequency change, realizing such an imbalance between the two oscillators
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Metal Detector Discrimination: Short version


Considering the fact that most manufacturers keep out to provide details of the performance of detection depth will offer is a list of the main models of existing detectors on the market as well as their performance in detection depth. These data were collected by me over the internet. Personally I only tested some of these detectors. For other good take your those who say they have tested these detectors and they offered me this data.what does discrimination mean on a metal detectorhow to use a metal detector discrimination
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how to use a metal detector on the beachMore details on discrimination in metal detecting can be found in the video below:
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