Transcription of (11255 Geonics Brochure rev)
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(11255 Geonics Brochure rev)
EM61-MK2 EM61 SMETAL DETECTORSEM61-MK2 EM61 SGEONICS LIMITEDEM61-MK2 Metal DetectorThe EM61-MK2 Metal Detector provides multiple measure-ments of the decay of the secondary magnetic field associ-ated with any metallic object. Data available from as many asfour time gates geometrically spaced in time from 216 sto1,266 s provide recognizable improvements in both detectionand earlier time gates available with the EM61-MK2 improve thedetection of smaller targets most significantly. The decay rate of thesecondary field associated with smaller targets is relatively quick;measurements at early times, therefore, are required to ensure thedetection of secondary magnetic field response that may not beavailable at later an example, a 20 mm projectile (ordnance item), oriented hori-zontally, is not detectable with the original
MEASURED QUANTITY Four channels of secondary response in mV EM SOURCE Air-cored coil, 1 x 0.5m size CURRENT WAVEFORM Unipolar …
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