Obsnap Instruments Sdn Bhd
29A, Jalan SS 15/4C,
47500 Subang Jaya,
Selangor, Malaysia.
+603-5621 5786
+603-5621 5829

High-Temperature Tube Furnaces for Horizontal and Vertical Operation up to 1800ˇăC Gas Atmosphere or Vacuum

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High-Temperature Tube Furnaces for Horizontal and Vertical Operation up to 1800ˇăC Gas Atmosphere or Vacuum Tube Furnace and Accessories Nabertherm Furnace Laboratory Equipment Facility

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The high-temperature tube furnaces are available in either horizontal (type RHTH) or vertical (type RHTV) designs. High-quality insulation materials made of vacuum-formed fiber plates enable energy-saving operation and a fast heating time due to low heat storage and heat conductivity. By using different gas supply systems, operations can be performed under non-flammable or flammable protective or reactive gases or under vacuum.

  • Tmax 1600 °C, 1700 °C, or 1800 °C
  • MoSi2 heating elements, mounted vertically for easy replacement
  • Insulation with vacuum-formed ceramic fiber plates
  • Only fiber materials are used which are not classified as carcinogenic according to TRGS 905, class 1 or 2
  • Rectangular outer housing with slots for convection cooling
  • Tube furnaces RHTV with frame for vertical operation
  • Dual shell housing made of sheets of textured stainless steel
  • Ceramic working tube made of material C 799 incl. fiber plugs for operation under air
  • Type B thermocouple
  • Power unit with low-voltage transformer and thyristor
  • Over-temperature limiter with adjustable cutout temperature for thermal protection class 2 in accordance with EN 60519-2 as temperature limiter to protect the furnace and load and with selectable maximum temperature gradient as tube protection
  • Switchgear and control unit separate from furnace in separate floor standing cabinet
  • Defined application within the constraints of the operating instructions
  • NTLog Basic for Nabertherm controller: recording of process data with USB-flash drive

Additional equipment

  • Charge control with temperature measurement in the working tube and in the furnace chamber outside the tube
  • Display of inner tube temperature with additional thermocouple
  • Gas tight flanges for protective gas and vacuum operation
  • Manual or automatic gas supply system
  • Three-zone control for optimization of temperature uniformity (only tube furnaces RHTH)
  • Check valve at gas outlet avoids intrusion of false air
  • Process control and documentation via VCD software package or Nabertherm Control Center (NCC) for monitoring, documentation and control
Model
Horizontal design
Tmax °C Outer dimensions in mm Max. outer tube Ø/mm Heated length mm Length constant temperature ±5K Tube length in mm Connected load kW Electrical connection Weight in kg
W D H
RHTH 50/150/.. 1600 or 470 480 640 50 150 50 380 5.4 3-phase 70
RHTH 80/300/.. 1700 or 620 550 640 80 300 100 530 9.0 3-phase 90
RHTH 120/600/.. 1800 920 550 640 120 600 200 830 14.4 3-phase 110

Model
Vertical design
Tmax °C Outer dimensions in mm Max. outer tube Ø/mm Heated length mm Length constant temperature ±5K Tube length in mm Connected load kW Electrical connection Weight in kg
W D H
RHTV 50/150/.. 1600 or 500 650 510 50 150 30 380 5.4 3-phase 70
RHTV 80/300/.. 1700 or 580 650 660 80 300 80 530 10.3 3-phase 90
RHTV 120/600/.. 1800 580 650 960 120 600 170 830 19.0 3-phase 110

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