Dilatometry (DIL)
DIL 402 E/7 & E/8
Pyro - Vacuum-tight, horizontal pushrod dilatometer
Reliable thermal expansion measurements up to 2800°C
The DIL 402 E dilatometer can be operated to 2400°C (E/7) or 2800°C (E/8) with the appropriate graphite furnace; optical pyrometers are applied for temperature measurement and control. In this mode, high-temperature resistant samples are tested in glass carbon sample holders under inert atmosphere or vacuum.
Operation to 2000°C is also possible with this dilatometer using thermocouples for temperature measurement and control. Graphite materials, high-temperature ceramics and refractory metals are among the application areas for this versatile, modular high-temperature dilatometer.
Technical Specification:
Temperature range: RT to 2800°C
User-interchangeable furnaces:
· RT to 2000°C (thermocouple operation) to 650°C to 2400°C (pyrometer operation)
· RT to 2000°C (thermocouple operation) to 650°C to 2800°C (pyrometer operation)
Interchangeable protective tubes for the 2400°C furnace*
· Al2O3 (also for tests under oxidative atmospheres up to 1680°C)
· Glassy carbon (up to 2000°C)
Heating rate: 0.01 to 50 K/min
Cooling systems: Water cooling or cooling thermostat
Atmosphere:
· Inert (He > 2000°C)
· Oxidizing (graphite furnace up to 1680°C with special Al2O3 protective tube)
· Reducing
· Static and dynamic operation
Vacuum: <10-4 mbar (10-2 Pa)
Gas flow control options:
· Gas flow control supplement for 1 gas path
· MFC gas control box for 3 gases
Measuring range: 500/5000 μmmax
Load at the sample: 15 cN to 45 cN
Δl resolution: 0.125 nm/digit, 1.25 nm/digit
Sample diameter:
· 12 mm in thermocouple operation
· 6 mm in pyrometer operation
Sample length: Up to 25 mm in thermocouple or pyrometer operation up to 2800°C
