OTF-1200X-V is a Five-zone split tube furnace that can create a smooth thermal gradient or one uniform constant temperature zone by adjusting the four-zone temperature up to 1200^oC and 870 mm long heating zone. The furnace includes one quartz tube with optional OD of  80, 100, or 130 mm OD, and one pair of vacuum sealing flanges with pressure gauge & ball valve for immediate use. 
   Touch Screen temperature controller is installed for easy programming with 30 segments and +/- 1 ^oC accuracy. It is an excellent furnace for annealing, diffusing, and sintering samples in various atmospheres.     

Specifications:

Furnace structure	Double-layer steel case with two cooling fans, which ensures low surface temperature. Energy-saving high-purity fibrous alumina insulation.
Power	AC 208-240V Single Phase, 50/60 Hz (50A breaker required) Power consumption 8 KW Max. A power cord is included without the plug
Working Temperature	Max.                          1200  oC < 1 hr. Continuous :               1100  oC  Max. Heating Rate:   <= 20  oC /min
Processing Tube	Three Types of quartz tubes are available as in the product option  OD 80 x  ID 74 x L 1400  ( mm) OD100 x ID 94 x L 1400 ( mm) OD 130 x ID 124 x L 1400 ( mm)  Two fibrous ceramic tube blocks are included to block heat radiation from inside the tube. (Ceramic blocks must be fully inserted into the furnace chamber before heating) Quartz block (Optional) is ideal for more cleanness and a higher achievable vacuum.
Vacuum -Tight Flange	One pair of the vacuum-sealed flange is included for matched tube The needle valve is installed on the right-side flange with a 1/4" tube fitting The mechanical gauge and valve are installed in the left-side flange Vacuum level: 10-4 torr by turbopump and 10-2 torr by a mechanical pump A digital vacuum gauge (Pic. 1) and KF25 port are available upon request at extra cost   Pic. 1 Pic. 2
Heating Zone Length	Four temperature controllers are integrated into a touchscreen control panel to set temperature profiles easily, which can control each heating zone independently  or heating 4 zones at the same temperature PID automatic control for heating rate, cooling rate, and dwell time up to 30 segments Built-in overheating & broken thermocouple protection. +/- 1 ºC temperature accuracy. Four K-type thermocouples (one for each zone). RS485 Communications Port  and soft are available for PC connection  Five heating zones:   Each Zone length: 152 mm x 5  Total heating zone length: 870 mm, 34" in total) Constant temperature zone:  ~500 mm within +/- 2oC
Temperature Control	Five temperature controllers are integrated into a touch screen control panel to set temperature profiles easily, which can control each heating zone independently  or heating 4 zones at the same temperature PID automatic control for heating rate, cooling rate, and dwell time up to 30 segments Built-in overheating & broken thermocouple protection. +/- 1 ºC temperature accuracy. Five K-type thermocouples (one for each zone). RS485 Communications Port  and soft are available for PC connection
Dimension	1100 X 450 x 670mm
Net Weight	about 85 Kg
Warranty	One-year limited warranty for electrical parts. (Consumable parts such as processing tubes, o-rings, and heating elements are not covered by the warranty, please order the replacement at related products below.)
Compliance	CE Certified NRTL or CSA Certification is available upon request, additional charges will apply Patten Number: ZL-2011-2-0355777.1
Shipping package size after crating	65x45x35"
Shipping weight	250 Lbs
Operation Instruction Click here to learn the installation of a gas regulator	How to set up the ceramic tube and vacuum flange for MTI Tube Furnace. In order to obtain accurate temperature inside the tube furnace, you need to calibrate the temperature by yourselves. Please click here to learn how. Warning:  The tube furnaces with quartz tube are designed for use under vacuum and low pressure < 0.2 bars / 3 psi / 0.02 MPa Attention: A two-stage pressure regulator must be installed on the gas cylinder to limit the pressure to below 3 PSI for safe operation. Click here to learn the installation of a gas regulator. * Vacuum pressures may only be safely used up to 1000°C   The flow rate for gasses should be limited to<200 SCCM (or 200ml/min) for reducing thermal shocks to the tube