Intalysis
Technology for Online Analysis
LFM Bowen Moisture Analyser - for Coal
The LFM Bowen is used by mine operators in the coal industry to achieve:
- Accurate moisture control through on-line measurement. This allows for precise addition of water from mine to port, assisting operators to control dust extinction while keeping moisture below maximum shipping limits
- Improved stock control through accurate moisture measurement and tighter blending ratios.
The LFM Bowen is available in two models:
- LFM Bowen 35 – suitable for medium attenuation situations (typically bed depths of less than 250mm) such as coal processing plants where value pricing is critical. It accommodates one product calibration.
- LFM Bowen 50 - designed to accommodate high bed depths of coal (500mm at typical moisture contents) such as those occurring at train or ship load outs.
The technology is based on a microwave transmission measurement system, where microwaves are transmitted through the material from above and received below the belt.
Measurements are not affected by vertical segregation of the material on the belt, are independent of material particle size and belt speed and are effective with both fabric and steel cord belts. The standard LFM system requires an output from a belt weigher to correct for variations in belt loading.
Key Features
- Effective operation in conditions where microwave attenuation ranges from medium to high
- Large dynamic range for measurement of high moisture content, thick beds or highly attenuating materials
- True continuous moisture measurement
- Rugged, light-weight, low-profile microwave antennae for easy installation
- High-performance, low-frequency microwave electronics provide exceptional accuracy in demanding climatic conditions
- Inexpensive field maintenance due to easily replaceable electronic modules
- Radio modem communications for remote system diagnostics and operation
- Very low microwave power emitted (about 0.01 to 0.1 per cent of that produced by a mobile phone)
- Installs directly on the production conveyor belt
- Installation requires little modification of the existing structures.
The analyser does not contact the material monitored nor does it interfere with the routine operation of the conveyor. Once installed and calibrated the system operates continuously without the need for sampling.
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