Laboratory Tube Furnaces (750 C-1200 C)

Ants  Tube Furnace

  • Ants horizontal tube furnace adopt a 40, 60, 70, 80 or 100mm O.D quartz tube and a pair of stainless steel vacuum sealing flanges with needle valves & gauge allow heating samples under vacuum or gas flow conditions. The temperature of this tube furnace is controlled by a high precision digital controller which provides 51 programmable segments with +/- 1℃ accuracy. The max. working temperature is 1200℃.
  • Description
  • Ⅰ. Technical Specifications
  • Max. temperature
  • 1200 ℃  (<2 hours)
  • Working temperature
  • 700-1100 ℃
  • Standard Temperature controlling
  • ●  PID automatic control via SCR (Silicon Controlled Rectifier) power control with phase angle fired, current limiting resistor.
  • ●  51 programmable segments for precise control of heating rate, cooling rate and dwell time.
  • ●  Built in PID Auto-Tune function with overheating & broken thermocouple broken protection.
  • ●  Over temperature protection and alarm allows for operation without attendant.
  • Optional of Temperature controlling
  • ●  Software (Furnace can be operated by PC by installing a control software )
  • ●  Touch screen temperature controller
  • Temperature accuracy
  • ±1 ℃
  • Heating rate
  • <20 ℃/min
  • Thermocouple
  • K type (Pt-Rh) with 99.7% purity Alumina tube
  • Heating element
  • Fe-Mo-Cr sprial wire
  • Furnace Chamber
  • Two layers of ceramic fiber insulation materials
  • ●  First layer: 1430 ℃ ceramic fiber board
  • ●  Second layer: 1260 ℃ ceramic fiber board
  • Furnace structure
  • Double layer steel casing with dual cooling fan, surface temperature below 60℃.
  • Vacuum system
  • ●  Double stage rotary vane vacuum pump with magnetic valve to prevent the oil absorbed to tube.
  • ●  Self-expansion type double silicon ring flange, 304 stainless steel HCP.
  • ●  Needle valve + Mechanical vacuum gauge + Discharge valve
  • Warranty
  • ●  One year limited warranty with lifetime support. (Consumable parts such as heating elements and crucibles are not covered by the warranty, please order the replacement at related products)
  • ●  ATTENTION: Any damages caused by the use of corrosive and acidic gases are not under the coverage of One Year Limited Warranty.
  • Certifications
  • CE
  • Ⅱ. Application Notes   
  • Using Attentions
  • ●  Cooling rate shall also not exceed 5℃ /min.
  • ●  Toxic or explosive gases are not recommended for use with this furnace without necessary safety controls and supervision.
  • ●  Small cracks may appear on the surface of the refractory ceramics over extended use.
  • ●  The tube furnace is avoid use vacuum above 1500℃, otherwise the tube will be serious deformation.

Our Standard Models


Optional fittings include:.

  • A wide range of tubes
  • Gas tight end fittings for work in controlled atmospheres
  • For increased uniform temperature zone length, three zone versions are available
  • Vacuum pump and related accessories
  • R-Type thermocouple – this option upgrades the standard K Type (mineral insulated inside Inconel sheath) thermocouple to R-Type thermocouple and is recommended if furnaces is going to be used continuously at 1200°C.
  • Over-temperature protection – This option is recommended to protect valuable contents & for unattended operation.
  • Data logging and remote controlled controllers – A range of sophisticated digital controllers, multi-segment programmers and data loggers is available. These can be fitted with RS232 and RS485.