1200°C Large Vertical Tube Furnace with 8'' or 11" Quartz tube & Vacuum Flange - OTF-1100X-III-VT

OTF-1100X-III-VT is a three-zone heated large tube furnace with optional 8 or 11 "O.D quartz tube and vacuum flanges. Three programmable temperature controllers are built-in with K type thermal couple, which provides 1000 mm heating length and > 330 mm constant temperature zone up to 1200 °C Max working temperature. It is an excellent tool for annealing, diffusing, and sintering processes.

SPECIFICATIONS

Furnace structure	A splittable vertical furnace with ~ 12" dia heating chamber. Double-layer steel casing with air cooling.  The surface temperature of the case is < 70°C. Quality fibrous alumina insulation liner for maximum energy saving. Two fibrous ceramic tube blocks are included for blocking heat radiation from the inside tube.   (Ceramic blocks must be fully inserted into the furnace chamber before heating)  Aluminum alloy frame with wheel for easy moving.
Power required	Three Phase, 208V AC, 50/60 Hz   3 phase 380V is  optional AWG 8# Power cord is included (without plug)  Max. 30KW (100A breaker required)
Heating zone	Total heating zone length ~1000mm (40") Three zones: 330 mm + 330 mm + 330mm   Constant temperature zone length : 350 mm (if three zones are in the same temperature within +/- 3°C) Cross section Temperature tolerance +/- 3°C
Working temperature	Max heating temperature: 1100°C  Max heating & cooling rate: 10°C/min SiC heating elements, a total of 36 pcs
Temperature Controllers	Three Eurotherm temperature controllers are built-in to control each heating zone independently. 1 program of 8 or 24 segments for each zone Digital Communications: RS485 Temperature Accuracy:  ±  0.1ºC Sofware is included for operating by PC
Vacuum sealing & Flange	A pair of stainless steel vacuum sealing flange (Hinged Type) and 4 pieces of high temp-resistance silicon O-ring are included in order to achieve the vacuum rate of 10^-2 torr via a heavy-duty mechanical pump. Left Side Flange: stainless steel needle valves, and 1/4" barbed hose fitting. Right Side Flange: KF40 vacuum port with a vacuum gauge. KF-40 Vacuum Right-Angle Valve is optional for easy connection to KF40 bellows and pumps. One 1/4" OD thermal couple insert port is built on the right flange for easy temperature calibration.
Quartz Tube	Can accommodate 8'' or  11" O.D quartz tube with 71" Length, please select tube size in the option bar High purity quartz tube, please click the bottom left picture to view. Warning: quartz tube is fragile, please handle with care. Warranty does not cover the broken tube by use
Options	The tube furnace should be calibrated regularly to maintain temperature accuracy and uniformity. We are providing a simple calibration kit for you to complete this job at an extra cost The complete calibration kit includes (click the underline to see details): One 48"L ( 1/4"OD)  K type calibration thermocouple One Omega temperature calibrator 5 feet long thermocouple power extension wire You may consider ordering turbopump for hi-vacuum up to 10-5 torr ( click pic below right to order )  4'' ~ 8'' large size quartz boats We can make the furnace into a vertical upon request.
Compliance	CE Certified NRTL or NRTLCSA Certification is available upon request, additional charges will apply
NOTE	In order to obtain accurate temperature inside the tube furnace, calibration of temperature is required before use, please click here to learn How to set up ceramic tube and vacuum flange for MTI Tube furnace
Warning	Tube furnaces with quartz tubes are designed for using under vacuum and low pressure <  0.2 bar / 3 psi / 0.02 MPa    or  0.12 MPa (absolute pressure).  Attention: A two-stage pressure regulator must be installed on a gas cylinder to limit the pressure to below 3 PSI for safe operation. Click here to learn the installation of a gas regulator. Vacuum limit definition for all quartz tube furnaces: * Vacuum pressures may only be safely used up to 1000°C The flow rate for gases should be limited to<200 SCCM (or 200ml/min) for reducing thermal shocks to the tube