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Description
General
The Model 1230 provides protection to downstream
processing equipment by detecting the presence of
potentially damaging metal objects. It is specically
designed for use on conveyor systems carrying materials
which contain consolidated or fractured magnetic or
nonmagnetic ore, as well as ores ranging in electrical
conductivity. The Detector will discriminate between
these conveyed materials and tramp metal of any type:
ferrous, nonferrous, magnetic or nonmagnetic.
The Detector makes use of the latest in digital electronic
technology. The design includes a number of innovative
features: self-test circuits that monitor the performance of
the detection circuitry, which when they fail, will trigger a
Fault Relay. Wide programming capability to custom tailor
the Detector to suit specic application requirements.
During normal operation, the transmitter coil is
energized to produce a pulsed electromagnetic signal.
These signals produce a eld that locally permeates
the conveyed material. This eld will induce a small
current in metal objects moving through the eld. The
induced current in the metal then induces a current in
the receiver antenna. This technique provides optimum
discrimination between tramp metal and the conveyed
material; product effect is non-existent or minimal.
The signal from the tramp metal is amplied and ltered.
The processed signal is then compared to a threshold
determined by the size of metal that must be detected.
When the signal exceeds this threshold, the Detector, at
the appropriate time, triggers the output relays.
The Detector is inuenced only by change. Therefore,
stationary structural members, metal belt cords,
symmetrical idlers and other objects which do not
represent a moving mass to the eld are not detected
though they can distort the eld and affect performance.
Metal belt repair clips are passed by the unit with an
optional clip detector sensor. Clip Mode temporarily
reduces the detectors sensitivity while the clip moves
through the antenna area.
Safety
As a manufacturer we believe it is our duty to make you
aware of the following information.
INTENDED USE
SAFETY SIGNS
WITH SAFETY NOTICES
SAFETY INFORMATION FOR OPERATORS
SAFETY INFORMATION FOR OPERATORS
AND MAINTENANCE
