1200C 1-Zone 50mm OD Top-Open Tube Furnace with Quartz Tube

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Mitsubishi® refractory lining, 40-segment PID digital controller, overheat protection, 2 quartz tubes incl. ETL available.


SKU: 561 Category:



STF1200 50x600mm (ODxlength) portable top-open tube furnaces feature spiral wire coils embedded in Mitsubishi (Japan) alumina fiber insulation. A double walled steel internal housing helps minimize heat loss to exterior surface. Furnace operation is controlled by a 30-segment digital controller. All our furnaces are CE compliant.


  • Compact, portable and lightweight design.
  • Top-open furnace chamber for fast and easy tube access.
  • Standard package includes set of stainless steel vacuum sealing flanges with valves and pressure meter.
  • Microprocessor based self-tuning PID control provides optimum thermal process with minimal overshoot.
  • Multiple atmosphere processes in a single cycle are possible (ex: binder burn out in air and parts sintering under rough vacuum or inert gas environment.)
  • Long life type K thermocouple.


  • Overheat protection shuts down the furnace if temperature is outside of acceptable range (refer to controller’s manual) or when the thermocouple is broken or malfunctions.
  • Power failure protection resumes furnace operation right after the point of failure when power is reestablished.

Warning! NEVER fill furnace with explosive gases, including Hydrogen, Carbon Monoxide and Methane.


 Electrical requirements  115V, 50/60Hz, 1~phase, 1,400 watts
 50mm OD x 600mm L, Quartz
 Maximum working temperature  1200°C  (2 hours maximum continuous run time)
 Constant working temperature  1100°C
 Minimum working temperature  Ambient
 Constant working temperature under vacuum  1000°C
 Rated vacuum pressure  0.001 Pa / 0.0075 millitorr / 0.00001 mbar
 Rated positive pressure  0.02 MPa / 150 torr / 3 psi
 Heating element type
 Resistance coil wire
 Thermo couple type  K
 Refractory lining  Mitsubishi (Japan) 1500 grade fiber alumina
 Temperature controller  Single PID, 30 segments
 Maximum heating rate    < 30°C / min
 Heating zone length  8″
 Constant temperature zone length    3″
 Temperature controller precision
 +/- 1°C
 Vacuum sealing flange kit

 Stainless steel vacuum sealing flanges with one vacuum gauge,
two valves and four thermal ceramic blocks.      

 Gas inlet/outlet
 1/4″ hose barb with 1/4″ BSPP (British standard parallel pipe)
 Unit dimensions
 21 x 32 x 26″ (WxDxH) without tube
 Unit weight  130 Lb
 ETL tested to UL and CSA standards (optional), CE
 Download  Product brochure


How to Install an Across International Tube Sealing Flange









Standard package


Part description    






Part image 


 STF1200 top-open tube furnace
 1 pc

 Quartz tube 50mm OD x 600mm L
 2 pcs

 Stainless steel vacuum sealing flanges w/ pressure meter 
 1 set

 Stainless steel hook
 1 pc

 Alumina ceramic thermal block
4 pcs

 Spare fuse 2 pcs
 Thermal gloves  1 pair

 Furnace operation manual  1 pc

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