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1. Inside size: 240*330*430 mm
2. Temperature range:-30 °c~300 °c
3. Temperature accuracy: 0.3%
4. Temperature fluctuation range: ±0.5°c
5. Temperature uniformity: ±2°c
6. Speed of cooling: 0.7~1 °c/min
7. Hollow electric heating glass observation platform
8. Temperature control: PID automatic temperature control
9. Material of outside wall: cold-rolled iron sheet spraying
10. Material of inner wall: stainless steel sheet
11. Insulation material: antiflaming insulation material
12. There are electric heating devices on the edge of doorframe and doorplate to prevent
condensation and frost formation when processing low temperature test.
13. Illuminating lamp: one (damp-proof, explosion-proof, locating proper position, outside control
switch)
14. Air conditioning system:
a temperature control: PID automatic temperature control
b air circulation device: centrifugal fan
c manner of heating: nickel-chromium electric heater, forced aeration and inner circulation
temperature adjustment
d manner of air cooling: compressor refrigerating
e temperature measuring transducer: platinum resistor
f refrigerating compressor: compressor (CFCs) refrigerating (France Tecumseh hermetic fan
cooling)
15. Tightness and reliability: pipeline of cooling system is welded and tightness is reliable
16. Devices for safety and protection
a power supply overload and short-circuit protection
b refrigerating compressor lack-phrase protection
c ground connection protection
d over temperature protection
e refrigerating machine high and low voltage protection
(GDX-30/300G) Tensile testing usage High Low Temperature Chamber
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