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


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.

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SKU: STF1200.50.600 Categories: ,



  • 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 temperature1200°C (2 hours maximum continuous run time)
Constant working temperature1100°C
Minimum working temperatureAmbient
Constant working temperature under vacuum1000°C
Rated vacuum pressure0.001 Pa / 0.0075 millitorr / 0.00001 mbar
Rated positive pressure0.02 MPa / 150 torr / 3 psi
Heating element type
Resistance coil wire
Thermo couple typeK
Refractory lining Mitsubishi (Japan) 1500 grade fiber alumina
Temperature controllerSingle PID, 30 segments
Maximum heating rate < 30°C / min
Heating zone length8″
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/outlet1/4″ hose barb with 1/4″ BSPP (British standard parallel pipe)
Unit dimensions21 x 32 x 26″ (WxDxH) without tube
Unit weight130 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






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STF1200 top-open tube furnace1 pc
Quartz tube 50mm OD x 600mm L2 pcs
Stainless steel vacuum sealing flanges w/ pressure meter1 set
Stainless steel hook1 pc
Alumina ceramic thermal block4 pcs
Spare fuse2 pcs
Thermal gloves1 pair
Furnace operation manual1 pc

Additional information

Vacuum setup

3/8" hose barb with no pump (no extra charge), KF25 flange port with no pump (no extra charge), Ai 110/220V EasyVac 7 cfm pump w/ mist filter (+$590.00), Ai 110/220V EasyVac 9 cfm 2-Stage pump w/ filter (+$790.00), Ai 110/220V SuperVac 5.6 cfm 0.3 micron pump (+$1,890.00), Ai 110V SuperVac 11cfm 0.3 micron pump (+$2,690.00)


No additional accessories (no extra charge), 2 quarts (1.9 L) of ultra grade 19 pump oil (+$40.00), EZ-Swap vacuum pump exhaust filter w/ fittings (+$159.00)

UL, CSA, CE certification

No thanks (no extra charge), ETL tested to UL/CSA standards (+$1,500.00)


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