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The Land Aluminum Strip Thermometer system is specifically designed to provide the aluminum hot rolling industry with a solution to one of its most difficult problems - accurate and reproducible temperature measurement of bright, semi-finished hot alloy strips.

If your specific area of concern 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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Benefits
Reduced re-annealing costs
Reduced finishing costs
AST can infer potential problems on preceding ‘Breakdown Mill’ operations, ie reduction in coolant
Improved process control
Accurate reliable temperature measurement to within +10°C/18°F after optimisation
Improved accuracy over both single and dual wavelength thermometers

Features
Automatically copes with varying alloy types and emissivities.
Accurate optimisation using dedicated ‘set-up’ unit.
Computer software to automate system optimisation.
Highly reliable, drift-free measurement.
The LMG AR Processor provides digital indication of temperature as well as 0 or 4 to 20mA analog outputs for connection to data recording or mill control equipment. An optional Maths Function Card permits mathematical comparisons to be made between thermometer inputs. Results may be used to drive outputs to the plant control system.
Supports RS232C and RS485 serial communications.

Applications
The AST is highly effective in the following mill locations:
Measurement at both entry and exit of the Finishing Mill
Measurement at the Breakdown Mill (Reversing Rougher)
Measurement at the Downcoiler

A Literature download on the Aluminum Rolling Industry is available
Last Modified (28/09/04) 387KB.
Aluminum Rolling Mill
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Land Aluminum Strip Thermometer (AST)
  The Land Aluminum Strip Thermometer (AST) is a unique infrared thermometer which is used in conjunction with an intelligent signal processor (LMG AR) to produce accurate temperature measurement of hot alloy strip.
AST is capable of providing more accurate temperature measurement than any other thermometer available.
A diagram showing the Land Aluminum Strip Thermometer (AST) in use.

The AST is programmed with emissivity data based on extensive plant trials

AST provides reliable, drift-free measurement necessary to optimise finishing mill control settings

  The emissivity of bright alloy strip is known to vary in a complex way with alloy content, surface finish and temperature.

The AST is programmed with emissivity data based on extensive plant trials, delivering good measurement accuracy on installation.
The AST uses this data to automatically assign values of emissivity to individual alloy types without external intervention such as emissivity inputs.

The accuracy of each AST can be further optimised in a given measurement location using the new APCOS (Application Processor Configuration and Optimisation Software). A ‘set-up’ unit is provided to facilitate this optimisation; and may also be used to test accuracy and derive settings for unusual alloy types.
Settings can be made on-line, via an RS232C or RS485 Serial Communications link.

AST has been shown to give remarkable temperature correlation with contact measurements, over a wide range of common alloy types in real mill conditions.
AST provides reliable, drift-free measurement necessary to optimise finishing mill control settings.
Accurate temperature measurment using the Land GST


A unique feature of the AST thermometer is the ability to optimise each unit individually

Optimisation is performed using APCOS (Application Processor Configuration and Optimisation Software)
 
OPTIMISATION

As a result of experience gained from many site trials and installations, it has been found that slight variations are required in the temperature calculation coefficient values, in order to maximise the system accuracy at each measurement point.
A unique feature of the AST thermometer is the ability to optimise each unit individually.
This may then improve the measurement accuracy at each location.
Optimisation requires a small number of temperature comparisons to be made on a representative sample of product types, against the AST set-up unit.
Optimisation is performed using APCOS (Application Processor Configuration and Optimisation Software), provided as standard with the LMG AR processor. APCOS processes data and submits an optimised solution for the temperature calculation.
 
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