Changes in the magnetic field are caused by a complex mix of eddy currents and the action of magnetic domains. The magnitude of these changes is dependent on the material's magnetic and electrical properties, sample geometry and quantity of material presented for measurement.
The physical principle on which Magnetic Susceptibility Meter | Sampling System | Magnasat is based relies on tried and tested technology; if a magnet is moved through a coil an electrical current is generated, conversely if an electrical current is passed through a coil a magnetic field is produced. In this way an absolute measurement of magnetic susceptibility is provided.
Magnetic Susceptibility Meter | Sampling System | Magnasat is designed to be installed directly on tonnage rated conveyor belts. The system consists of an interrogation coil which is installed round the conveyor belt; a reference coil which is located adjacent to the interrogation coil and an Electronics Control Cabinet which houses all the electronic components as well as the power supply and terminations.
The interrogation coil measures the changes in the magnetic field caused by the passage of the magnetite carried by the conveyor belt. The electronics housed in the Electronics Control Cabinet manipulate the raw data and output a % Magnetite result.
Once the system has been installed, it has to be calibrated, which is usually carried out using an automatic sampling system if this is available. If an automatic sampling system is not available then stop belt sampling can also be used to calibrate the system.
Features and Benefits of Magnetic Susceptibility Meter | Sampling System | Magnasat
Direct "on-belt" installation, - interrogates the entire conveyor burden encircling coil configuration
State of the art electronic design: - ultimate precision of <1 x 10-7 m3/kg
-Measurement of absolute - magnetic susceptibility and
Ultra-Dynamnics Pty Ltd specialises in process control enhancements, electronic monitoring equipment and general consultancy for power generation, mining and manufacturing and all heavy industry. The product range can be divided into a number of areas including:
1. General Industry
On-line measurement of the ultraMOIST moisture using a microwave transmission technique which is suitable for application to conveyor belt as well as in-bin. The system has been applied to a wide range of industries for application to moisture measurement of paper to rock as well as other non-conducting materials. Ultra-Dynamics Pty Ltd has also developed a number of control strategies including drier control and water addition.
MAGNASAT Magnetic Susceptibility Meter provides a measurement of the magnetic properties of materials and has been particularly useful for the copper and mineral sands industries for the measurement of magnetite and other ferrous mineral contents of process materials.
Inflo Resometric Beltscale which provides the ultimate precision and stability of mass flow measurement
2. Power Industry
Lintvalve Steam Leak Detection System for the detection of steam leaks before they become a major costly repair problem
Promecon's Mecontrol range of on-line analysis equipment including:
- UBC for the measurement of unburned carbon in fly ash
- AIR for the measurement of air flow directly in ducts
- COAL for the measurement of pulverised fuel mass flow, air velocity and particle size analysis
- TEMP for the rapid measurement of temperature particularly in pulverising mills.