Ramsey Oretronic IV Tramp Metal Detector REC 4479C
Page 15
On an under belt single coil TMD IV, the transmitter and receiver coils are together in a coil assembly mounted
under the belt. The coil support structure does not extend above belt height (see Figure 1-7).
Coils formers are made of impact-resistant polyvinyl chloride (PVC) and are designed to withstand stresses up
to 10 times gravity.
The transmitter coil transmits the pulsed electrical energy to the conveyor burden. The receiver coil receives
the electrical energy signal from the conveyor burden. Within this signal is the eddy current when tramp metal
is present.
Control Unit
The TMD IV control unit (see Figure 1-8) provides excitation for the transmitter coil, accepts receiver coil
signals, and annunciates the presence of tramp metal. The circuitry is housed in a NEMA 4X IP66
(P/N 147797)
fiberglass enclosure or a NEMA 4 IP66
(P/N 147800)
painted mild steel enclosure.
The front panel of the control unit provides the operator interface to the TMD IV system. Within the enclosure,
visible through an acrylic window, is a lighted, heated LCD panel with status LEDs and a membrane keypad.
Under normal operations, the LCD panel and LEDs will indicate the presence of tramp and the coast count. It is
also used for set-up and calibration. An exterior-mounted and weather resistant RESET button provides all of
the interaction a user will need during normal operation; if desired, the fiberglass enclosure can be secured
with a lock. The software can also be secured though password protection.
Figure 1-8 Oretronic IV-4 and Oretronic IV-6 Control Units
