About the Metal Detector Range
56
Air Blast
The Air Blast reject device is suitable for removing contaminated wrapped products from your
production line using a high pressure blast of compressed air to push the contaminated product off of
the conveyor belt and into a reject bin.
Generally a single nozzle is specified but a second nozzle can be fitted when required to provide
more control or to reject over or underweight packs into a separate reject bin where the metal detector
is being used in combination with a checkweigher.
Air Blast reject devices are suitable for use with systems where a maximum of 250 packs are being
presented for inspection per minute and the maximum individual pack weight is 500g.
Pusher
The Pusher reject device is suitable for removing contaminated wrapped products in rigid packaging
from your production line.
An acetyl blade, driven by a blast of high pressure compressed air, pushes the contaminated product
off of the conveyor belt and into a reject bin.
Generally the pusher blade pushes the product off of the conveyor belt from the side, but an overhead
pusher can be fitted when required to suit the product or production line set up.
Pusher reject devices are suitable for use with systems where a maximum of 100 packs are being
presented for inspection per minute and the maximum individual pack weight is 10Kg. However, a
heavy duty pusher is available which can be used for pack weights up to 50Kg. A reject roller track,
rather than a reject bin, is recommended for use with a heavy duty pusher to remove the product
safely from your production line.
Plough
The Plough reject device, sometimes referred to as the diverter, is suitable for removing cylindrical
products being presented at a low rate from your production line.
An acetyl blade, driven by a blast of high pressure compressed air, moves across the conveyor belt to
divert the contaminated product off of the conveyor belt and into a reject bin.
Plough reject devices are suitable for use with systems where a maximum of 60 packs are being
presented for inspection per minute and the maximum individual pack weight is 1Kg.
Retracting Band
The retracting band reject device is suitable for removing continuous loose products such as
polythene bags and sachets from your production line.
The device uses compressed air to activate a carriage retracting mechanism to create a gap in the
conveyor belt. The contaminated product then falls through the gap and into a reject bin, which is
mounted on the underside of the conveyor.
Retracting band reject devices are suitable for use with systems where a maximum of 100 packs are
being presented for inspection per minute and the maximum individual pack weight is 5Kg. However,
multiple lanes may be employed to increase the overall number of packs that are presented for
inspection per minute.
Powered Decliner
The Powered Decliner reject device uses compressed air to activate a carriage decliner mechanism
to lower part of the conveyor belt and direct the contaminated product into a reject bin or run off area.
The carriage is then raised back up to its normal position.
Signal Only
Alternatively, a conveyor can be supplied without a reject device but with ‘Signal Only’ output. On
detection of metallic contaminant in the product, the control unit provides an output signal only. This
conveyor can be used in conjunction with the customer’s choice of equipment.
Summary of Contents for IQ3+
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