Zhengzhou Protech
Zhengzhou Protech
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Large diameter vacuum atmosphere tube furnace

Large diameter vacuum atmosphere tube furnace

    Application:  Widely used in experiments and small batch production in universities, scientific research institutes, industrial and mining enterprises, etc.
Contact us for customize send-email: info@lab-furnace.com
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Detailed Parameters Of The Product
Big tube size , long constant tem. zone, precise tem., suitable for multi-sample sintering or medium experiment.

Can put inner tube into the bid size outer tube, make big-area monolayer graphene growing test.

The device widely used in the field of semi-conductor, nanometer material, carbon fibre, graphene, etc. with cost-effective feature.
Technical Parameter:


Power rated: 12KW (208-240V)


Voltage rated:  AC208-240V 50/60HZ

Working Temperature

Max. Temperature: 1100℃ ( 1 hr)

Continuous working temperature: ≤1000℃

Recommended heating Rate: ≤10℃/min

Temperature Controller

PID automatic control and auto-tune function.

30 programmable segments for precise thermal processing.

Built-in protection for the over-heated and broken thermocouple. 

Length of heating zone


Length of constant zone


Heating Elements

Resistance wire, Fe-Cr-Al Alloy doped by Mo

Temperature Accuracy

+/- 1


Tube size: Φ150/210/280*1400mm (optional)

Overall size: 1300*650*1000mm

Two fibrous ceramic tube blocks are included for blocking heat radiation generated from tube center. (Ceramic blocks must be fully inserted into the furnace chamber before heating).Quartz blocks also optional

Vacuum Flange

Folding flanges

Vacuum Pressure

133torr can be achieved by mechanical pump

10^-6 torr can be reached by molecular pump

Please click the picture below to order vacuum pump

Net Weight



One year limited warranty with lifetime support  (Such consumable parts as tube, quartz block, and O-rings, etc. are NOT supported by the warranty)


Small cracks may appear on the surface of the refractory ceramics over extended use. This is a normal occurrence and the cracks may be repaired with alumina coating.


CE Certified

All electric components ( >24V) are UL / MET / CSA certified

The furnace is ready to pass TUV (UL61010) or CSA certification at extra cost. 

Operation instructions

Click to download the operating manual


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After-sales serveces

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