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The schematic diagram below illustrates the essential features of a typical roadstone plant. The areas highlighted offer measurement reference points and the best choice of instrument, where LAND's infrared thermometry know-how can really benefit you.

If your specific area of interest is not covered here, our engineers will be pleased to discuss your requirements with you.
If you would like more detailed product information please use the Literature Request page.

 
 
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Roadstone Industry Mixed Material - Batch Heaters Coated Roadstone Mixed Exit Drum Mix Asphalt Plants Hot Storage Bins Drier Exit Chute Roadstone Laying Point
Top of page1 - Drier Exit Chute
Dried Exit Chute

Dried Exit Chute
  A radiation thermometer is normally positioned in the drier exit chute to monitor the temperature of the aggregate as it leaves the drier. Utilizing a radiation thermometer permits closed loop control to set burners in the drier minimising fuel wastage and maximising product quality.

Fast response provides automatic burner control.
Maximise fuel savings
Improve product quality.
Unlike thermocouples they are not damaged or eroded by the moving
  aggregate.

Recommended Systems:-
Roadstone Thermometer

Top of page2 - Mixed Material (Batch Heaters)
Mixed Material (Batch Heaters)   When using the batch process, automatic burner control is not possible. Knowledge of the hot stone temperature and its subsequent effect on the binder and filler temperature is a useful aid to process control. Once the material is in the mixer it is not possible to make temperature adjustments. Measurement here does however, permit rejection of a single batch if it falls outside the specified temperature limits, avoiding contamination of acceptable material.

Maintain product quality.
Minimises 'out of specification' product dispatched.
Reduces risk of fire in the mixer.

Recommended Systems:-
Roadstone Thermometer

Top of page3 - Coated Roadstone Mixer Exit
Coated Roadstone Mixer Exit

Coated Roadstone Mixer Exit
  Installing a radiation thermometer at the mixer exit minimises the risk of rejection at the laying point due to being outside specified temperature limits. The temperature of each load can then be recorded on a chart or stored by computer. This is a simple installation, widely used and highly successful.

Rapid temperature measurement of finished product prior to despatch.
Operator free measurement system.

Recommended Systems:-
Roadstone Thermometer
Portable Infrared Thermometer PockeTherm

Top of page4 - Drum Mix Asphalt Plants
Drum Mix Asphalt Plant

Drum Mix Asphalt Plant
  With the high level of continuous production, any slight fluctuation in the final mix temperature can result in batch rejection. Measurement at the discharge chute can be fed to a chart recorder or linked to an automatic burner control system using a suitable controller.

Product quality is constantly maintained.

Recommended Systems:-
Roadstone Thermometer

Top of page5 - Hot Storage Bins
Hot Storage Bins   For large capacity drum mix plants, coated roadstone is stored in heated storage bins, often overnight. A Roadstone thermometer positioned at the exit door monitors temperatures of the discharged material to minimise the risk of batch rejection, due to it being out of the specified temperature range.

Recommended Systems:-
Roadstone Thermometer
Top of page6 - Roadstone Laying Point
One final check can be made here on the temperature of the product. On-site quality engineers can make spot checks using portable equipment. Failure to maintain quality control here could lead to uneven road rolling, premature wear and subsequent expensive repair.

Recommended Systems:-
Portable Infrared Thermometer PockeTherm

Top of pageCopyright © 2006 AMETEK Land, Inc.     All rights reserved     Infrared Site Map     Information updated: 21-Jul-2006