Ramsey Oretronic IV Tramp Metal Detector REC 4479C
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10.
If it is determined that the Fine Sensitivity is too low and therefore not tripping on the tramp of
interest, multiply
[(𝑃𝑒𝑎𝑘
𝑆𝑚𝑎𝑙𝑙
) × (𝑆𝑐𝑎𝑙𝑒 𝐹𝑎𝑐𝑡𝑜𝑟) × .80] × .90
and subtract from 1000, which
increases sensitivity by 10%. If Fine Sensitivity is too high and the detector is either false tripping or
tripping on metal pieces that are too small to need to detect, multiply
[(𝑃𝑒𝑎𝑘
𝑆𝑚𝑎𝑙𝑙
) ×
(𝑆𝑐𝑎𝑙𝑒 𝐹𝑎𝑐𝑡𝑜𝑟) × .80] × 1.10
and subtract from 1000, which decreases sensitivity by 10%. These
tuning steps can be repeated as many times as necessary.
Signal Scaling
Signal Scaling
Speed
(m/sec)
Speed
(ft/min)
Scale Factor
Speed
(m/sec)
Speed
(ft/min)
Scale Factor
.25
50
1.000
4.82
950
0.769
.51
100
0.983
5.08
1000
0.761
.76
150
0.967
5.33
1050
0.753
1.02
200
0.951
5.59
1100
0.745
1.27
250
0.936
5.84
1150
0.738
1.52
300
0.921
6.10
1200
0.732
1.78
350
0.907
6.35
1250
0.725
2.03
400
0.893
6.60
1300
0.720
2.29
450
0.879
6.86
1350
0.714
2.54
500
0.866
7.11
1400
0.709
2.79
550
0.854
7.37
1450
0.705
3.05
600
0.842
7.62
1500
0.701
3.30
650
0.830
7.87
1550
0.698
3.56
700
0.819
8.13
1600
0.695
3.81
750
0.808
8.38
1650
0.692
4.06
800
0.798
8.64
1700
0.690
4.31
850
0.788
8.89
1750
0.688
4.57
900
0.778
9.14
1800
0.687
Table 2-1 Scaling Factors for Calibrating Fine Sensitivity
Calibrating Clip Sensitivity
If your belt has an optional clip detector and one or more repair clips, the TMD IV can reduce sensitivity in the
area of the clip in order to prevent the clip from triggering false detections without reducing sensitivity for the
rest of the belt.
In order for the Oretronic to detect the approach of the clip, the clip sensor must be mounted so that the clip
will pass directly across its face, and the clip(s) must extend all the way to the edge of the belt.
To calibrate clip sensitivity, the belt must be run empty (so that there is no opportunity for tramp detections to
be confused with the clip). Bring up the Clip Coarse detect screen (under Calibration) and press the Learn
button. Allow the belt to run for at least 10 full revolutions. The bar graph will indicate the current
“background” detection, and an “x” drawn on one of the bars will indicate the maximum detection since the
