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| Limit temperature | 2450℃ | 
| Operating temperature | 2300℃ | 
| Ultimate vacuum | 1Pa(in a cold, empty and clean furnace) | 
| Leakage rate | no more than 10Pa/ hour for 12 hours after pump stop for 15 minutes | 
| Temperature control accuracy | ±11 | 
| Voltage | 380V,50Hz,3phase | 
| Heating material | graphite tube and graphite rod | 
| Gas supply | graphite tube and graphite rod | 
| Common constant temperature area | 300*300*500mm,400*400*800mm, 500*500*1300mm,600*600*1400mm | 



















