Detection Head 1 Detection Head 2
Tunnel  Width(mm) Tunnel Height (mm) Sensitivity (dia. mm) Sensitivity (dia. mm) Sensitivity (dia. mm)
    Ferrous S.S 304 Ferrous
300 80 / 100 / 120 / 150 / 180 0.4 / 0.4 / 0.6 / 0.8 / 0.8 1.0 / 1.0 / 1.3 / 1.3 / 1.6 0.7 / 0.7 / 0.9 / 1.1 / 1.1
350 100 / 120 / 150 / 180 / 200 0.6 / 0.8 / 0.8 / 0.8 / 1.0 1.0 / 1.0 / 1.3 / 1.5 / 1.8 0.9 / 1.1 / 1.1 / 1.1 / 1.3
400 100 / 120 / 150 / 180 / 200 / 250 0.6 / 0.8 / 1.0 / 1.0 / 1.3 / 1.6 1.3 / 1.3 / 1.6 / 1.8 / 2.0 / 2.3 0.9 / 1.1 / 1.3 / 1.3 / 1.6 / 1.7
500 120 / 150 / 180 / 200 / 250 / 300 1.0 / 1.0 / 1.3 / 1.3 / 1.6 / 1.8 1.6 / 1.8 / 1.8 / 2.0 / 2.3 / 2.8 1.3 / 1.3 / 1.6 / 1.6 / 1.9 / 2.1
600 150 / 200 / 250 / 300 / 350 1.0 / 1.3 / 1.6 / 1.8 / 2.3 1.8 / 2.3 / 2.3 / 2.8 / 3.3 1.3 / 1.6 / 1.9 / 2.1 / 2.6