Presentation METAL DETECTOR

Tramp Metal Detector – Oretronic III
Theory Of Operation
102
Detector de Metal
• El Detector de Metal Activa un Rele de
alarma ,el cual tipicamente es usado para
detener la Correa y remover el
Contaminante
• Se usa antes de un proceso de
Clasificación con Arneros, Chancado o
cualquier otro lugar donde un
contaminante Metalico, puede producir un
Daño
103
Sistema Tipo Inductancia
Principio:
• El campo
electromagnetico está
continuamente
oscilando.Cuando un
contaminante
conductivo pasa sobre
la Bobina ,la
oscilación cambia
esta es detectada porr
la electrónica y una
alarma es activada.
104
Sistema Tipo Inductancia
Ventajas:
1. El sistema Inductivo es mas sensible que el Sistema Eddy Current.
Desventajas:
1.
2.
Si el material es conductivo ,produce falsas paradas.
3.
El Agua es un conductor y produce falsas paradas.
4.
La sensibilidad variará de acuerdo a la separación de las Bobinas
5.
105
El Contaminante debe ser mas conductivo que el Material
Transportdo.
Minerales no conductivos como el manganeso no seran
detectados.
Sistema Tipo Eddy Current
Principio:
La Bobina Transmisora ,envía un pulso de energia
.Esta energia es absorbida por el Material.
Despues que el pulso para, el material iradia la energia
absorvida como una corriente Eddy.
El volumen de energia y su razon de decrecimiento es la
firma de el material , su huella digital, siendo este
mineral o contaminante. La electronica puede dicernir
entre Mineral y Contaminante..
106
Campo Eddy Current
107
Campo primario
108
Campo Secundario
109
Field Decay Characteristics
110
Eddy Current Type System
Advantages:
• Completely ignores water.
• Can find non-ferrous metals such as manganese.
• Dual coil arrangement is not sensitive to the tramp metal
location in the material burden.
111
Eddy Current Type System
Disadvantages:
• Dual coil arrangement is subject to material hitting the upper
coil on high tonnage applications.
112
Ramsey Oretronic III
• The frame assembly is constructed of fiberglass and plastic to eliminate
problems associated with wood
• The swing arm is cantilevered to better assist the transmitter coil to swing out of
the way
• Spring loaded shock absorbers provide a positive cushion against shock
113
Shock Absorber and
High Pile Detector
114
Ramsey Oretronic III
• The coil assemblies are constructed of PVC plastic and use a potting
compound to eliminate moisture problems
• The single coil unit has both the transmitter and receiver coils contained in one
coil assembly
115
Ramsey Oretronic III
Single Coil Unit
116
Ramsey Oretronic III
Single Coil Unit
117
Dual Coil Unit
Prior to Potting
118
Single Coil Unit
Prior to Potting
119
Ramsey Oretronic III
• The control enclosure is standard as NEMA 4X
• The keyboard is external to the enclosure and can be password protected
• The keypad is capacitive touch and resistant to all environments
• The control is at UL for listing
120
Ramsey Oretronic III
Features and Benefits
• Ramsey Oretronic III is available in both a single and dual coil configuration.
• New and improved frame assembly and coil bonding procedure greatly reduce
moisture problems. Cantilevered swing arm allows easy swing-out.
• The Oretronic control unit has been upgraded from an 8 bit to a 16 bit
processor for greater sensitivity.
• All adjustments and calibration are performed from the front panel, allowing the
enclosure to remain closed. Password protection prevents unwanted entry.
• Adjustable frequency allows you to select an operating frequency that is not
affected by RF noise.
• Two or more units can be synchronized to eliminate crosstalk.
• RS-485 is standard with each unit. This allows Modbus communications with a
remote front panel terminal that is located outside a hazardous area.
121
Ramsey Oretronic III
Features and Benefits
• Speed pick-up input is available. This will allow the display to show the distance
to the tramp in tenths of feet.
• A light stack is available which has red, green and amber lights stacked one on
top of another to indicate control status.
• All other options previously available are still offered.
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122
Clip Detector
High Pile Detector
Custom Contoured Coils
Spray Marker System
Mechanical Flag Drop
Alarm Horn
Rotating Beacon
Light Stack (New)
Ramsey Oretronic III
Front Panel Display
123
Magnet
Coils
Control
124
Class II TMD
Coal
125
TMD Control
126
Ramsey Oretronic III
Single Coil System
127
Under Belt TMD
128