ABT

Aluminium Billet Thermometer – ABT

This thermometer is designed specifically to provide fast and accurate measurement of temperature on the cylindrical surface of billets – either a spot measurement or a complete lengthwise profile.

Key Features

  • Fully integrated temperature measurement of die, billet taper, extruded sections and quench rate.
  • Accuracy unaffected by alloy type or surface finish.
  • Stable, robust performance.
  • Accommodates all alloy types.
  • Provides indication of deteriorating surface finish (emissivity).

 Key Benefits

  • Reduced die wear.
  • Improved press efficiency.
  • Increased throughput.
  • Improved product quality and metallurgical consistency.
  • Improved traceability and quality records.

Gallery

 
 Aluminium Billet Thermometer  


About the Thermometer
The Aluminum Billet Thermometer represents a major advance in the measurement of billet temperature. The thermometer is designed specifically to provide fast and accurate measurement of temperature on the cylindrical surface of billets – either a spot measurement or a complete lengthwise profile.

Why Measure Temperature? Accurate data on process variables, particularly billet and die exit temperatures, enables modern process optimization and press control systems to achieve almost isothermal extrusion conditions. During Aluminum extrusion, optimum billet temperature and taper characteristics lead to reduced die wear and improved press efficiency. To obtain the ideal billet heater settings, a fast and reliable measurement of billet temperature prior to loading into the press is essential. The measurement system must also be able to cope with changes of alloy type and surface finish.

Problems Involved in the Traditional Approach The most widespread method for measurement of billet temperature is the use of prodder thermocouples, either singly on an end face or in banks along its length.

Thermocouples are slow, maintenance intensive and inaccurate as metal build-up occurs on the tips. The cost in replacements and downtime is also significant. In addition, taper measurements are at best limited to between 6 and 8 points along the billet. Speed of response is important to avoid unnecessary delay between the measurement and loading of the billet into the press.

LAND Solution The Aluminium Billet Thermometer System (ABT) utilizes unique, non contact emissivity enhancement technology to provide accurate results on all common alloys and surface conditions. Measurements are made on the curved surface of the billet. The thermometer can be mounted for a spot measurement on stationary billets or installed to scan the length of each billet as it exits the preheat furnace.

The Benefits of Using the Aluminum Billet Thermometer

  • Accurate: Better than 5°C/9°F on all common alloys and surface conditions.
  • Fast: 10ms – no waiting for the reading to stabilize.
  • Drift Free: Non contact feature eliminates contamination and wear problems.
  • Ease of Installation : Compact, rugged design featuring fibre optic link from sensing head to electronics unit.
  • Low Maintenance: Limited to occasional wiping of contamination from the sensing head window.
  • System Configurations The ABT thermometer is available in System 4 and UNO stand alone radiation thermometer electrical configurations, making possible a wide range of signal processing and display options.

Patent No. 1103801

Temperatures
Low Temperature (C): 300 High Temperature (C): 600
Technical Details
Specification (ABT/S) (ABT/U)
Temperature range: 300 to 600°C/600 to 1100°F 300 to 600°C/600 to 1100°F
Response time: 5ms
Averager Response time: 5ms to 5s (0 to 95%)
Peak Picker decay rate: Adjustable 1.5 to 30% per second
Emissivity: Adjustable 0.10 to 1.00
Accuracy in operation: ±5°C/±9°F ±5°C/±9°F
Stability (temperature): 0.2°/°ambient
Stability (time): 2°C/4°F per year
Signal processing function: Snapshot Snapshot
Vibration: 3G Any axis 10 to 300 Hz
Humidity: 0 to 99% non condensing
Sealing: IP65
Ambient temperature limits
Optic head:
Lightguide:
Thermometer
Specified:
Operating:
165°C / 330 °F
200°C / 392°F
0 to 50°C/32 to 122°F
-10 to 60°C/14 to 140°F
165°C / 330 °F
200°C / 392°F
0 to 50°C/32 to 122°F
-10 to 60°C/14 to 140°F
EMC: EN 50-082-2 (immunity)
EN 50-081-1 (emission)
IEC 1010 (safety)
EN 50-082-2 (immunity)
EN 50-081-1 (emission)
IEC 1010 (safety)
Download Datasheet
Aluminium Billet Thermometer
Aluminium Billet Furnace Thermometer

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