Answer :

Final answer:

The calibration of Walk Through Metal Detectors typically involves using three specific test objects: ferrous metal targets, non-ferrous metal targets, and stainless steel targets. These samples help ensure the device accurately detects various metals. Proper calibration is crucial for the effectiveness of metal detectors in security settings.


Explanation:

Calibration of Walk Through Metal Detectors

The calibration of a Walk Through Metal Detector involves using specific test objects to ensure the device accurately detects various metal types. Typically, the calibration process utilizes standardized metal samples that vary in size, shape, and metal composition.

Specific Test Objects Used

During calibration, the following specific test objects are commonly employed:

  1. Ferrous Metal Targets: These are iron-based metals, which are usually the most detectable by metal detectors.
  2. Non-Ferrous Metal Targets: Examples include aluminum, copper, and brass. They are used to test the detector's sensitivity to non-iron based metals.
  3. Stainless Steel Targets: This type of metal presents a challenge because it has a lower magnetic permeability and may not be detected as easily.

By using these targets, technicians can adjust the sensitivity and operational parameters of the metal detector to effectively identify any potential threats or objects as they are passed through the detector's field.


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