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Conveyor Metal Detectors
Conveyor metal detectors are operational in a multitude of industries including:
 | Food manufacturing and processing |
| Bakeries |
| Timber plants |
| Fisheries |
| Abattoirs and meat processing |
| Rubber industry |
| Recycling industry |
| Paper and cardboard industry |
| Casting plants |
| Explosives manufacturing |
| Food processing, liquid and paste applications |
Today's stringent manufacturing standards demand the best in metal contaminant detection.
For manufacturers serious about the quality of their end product, detection of ferrous and non-ferrous metal contaminants in Food Processing, Pharmaceutical and many other industries becomes routine with Sands Security's range of Detec metal detectors.
| DETEC H.F.E. Single Head Metal Detector for Throughfed/Flat Conveyors |  |
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DETEC H.F.E. Dual Head Metal Detector for Throughfed Conveyors |
| The
H.F.E TYPE detection system is based on an oscillator powered by a
constant current source where the sensing coils are the inductive
component of the oscillator circuit.
The system is essentially designed to detect moving metal and is therefore not affected by stationary metal in close proximity to the sensing head. It is also able to ignore a constant mass of moving metal as in the case of a steel belt cord. However, it will detect a broken cord or splice, hence the need for a belt clip nullifier on belts with mechanical splicing and/or steel cords. When metal is introduced into the field created by the sensing head coils, this causes a change of 'Q' of the oscillator circuit and because the oscillator is supplied from a constant current source, a voltage change occurs. This voltage is then amplified and used to trigger the various output circuits. A Single head detector is selected where the burden depth is not greater than 300mm and tramp size is quite large and near the top of the burden. The Dual head detector is used where the burden is deeper and a small tramp metal on the top of the burden is required to be detected. Each sensing head has an individual sensitivity control.
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| DETEC
Aperture Detectors for Special Applications
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Utilising the latest in electronics, a signal is concentrated within the
aperture of the inspection head to detect metals, even if deeply embedded in the
tested product. These units can be constructed with a removable end plate, where slide-in installation is required to avoid cutting existing conveyor belts. Sands Security offers an excellent choice of unit size depending on the particular application. The product can be passed through the aperture via conveyor belt, inclined chute or non metallic pipe. Each model in the range operates with a Digital Pulse Phase Modulation and Phase Discrimination Signal Demodulation Network coupled to a Dual Gated detection system. This system allows Product Compensation and minimises the amount of good produce reject. The detector can be adapted to high or low conveyor speeds, and features Fault Monitoring which helps reduce errors to an absolute minimum.
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For more information on the Detec range of conveyor metal detectors, contact sales@sands-security.com.au