Rita L78 High Speed Dilatometer


  • High Speed Quenching Dilatometer (L78/RITA) as per ASTM A 1033 -04
  • Induction or light furnace
  • Expansion measurement with LVDT (conventional) or Laser (highest resolution)
  • Heating and cooling rate 100K/sec (standard configuration)
  • Controlled heating and cooling rates
  • Temperature -150 up to 1600°C
  • Maximum vacuum 10E-5mbar
  • Sample heats while the protection tube remains cool
  • Ultra fast data acquisition 1000 samples / second
  • Creation of CHT, TTT and CCT diagrams with Software
  • Vertical mode of operation

Main Advantages

  • Possibility to measure under vacuum, inert, oxidized, reduced atmospheres up to 1600°C. (Not possible with resistance heating furnace)
  • Measurements from -150 up to 1600°C in one run (no need of exchanging furnaces to cover the temperature range)
  • Very fast heat up and cool down speed
  • Expansion of any type of sample can be measured (susceptor)
  • Possibility to measure either with LVDT expansion principle, or with laser expansion measurement principle
  • This special quenching dilatometer can be used for the determination of continuous cooling / heat up CHT, CCT and isotherm TTT- diagrams.

Technical Specifications

Temperature range: -150 to 1600°C
Heat up speed: up to 4000°C/s
Cool down speed controlled: 400°C/s
Cool down speed uncontrolled: 2500°C/s
Sample holder: Fused silica, Al2O3
Diameter: 6...7mm (solid/hollow sample)
Length: 10mm
Atmosphere: inert, oxid., red., vac.
Acquisition rate: max.: 1000 readings/s
Power requirements: 230VAC, 16A, 50..60Hz
Sample/Cooling gas: Inert gas, 10l/min
Option: Cryogenic cooling


Ata Kamyabi, PhD candidate

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