OTF-1200X-6M 12-Zone Ultra-Long Split Tube Furnace with 5″ OD Quartz Tube, 1100°C Max Temperature
The OTF-1200X-6M furnace is engineered for advanced thermal processing of elongated materials requiring precise temperature control along extended lengths. It is particularly suited for treating long strip samples under vacuum or controlled atmospheres, ensuring uniform heat exposure over a continuous zone nearly 18 feet long by synchronizing multiple heating zones.
This split tube furnace integrates twelve independent heating zones, each 500 mm in length, controlled via a separate touch screen digital controller housed in an external unit. The furnace accommodates a 5″ outer diameter quartz tube, enabling processing of samples within a chemically inert and thermally stable environment. The modular design facilitates shipping and installation of this ultra-long furnace.
Key Features
- 12 independent heating zones with precise PID control and ±1°C accuracy
- Maximum operating temperature of 1100°C with continuous operation up to 1050°C
- Includes a 5″ OD x 4.7″ ID x 22′ (6500 mm) quartz tube for sample processing
- Touch screen digital temperature controllers with built-in overheating and thermocouple failure protection
- RS485 communication port and software included for PC control (PC sold separately)
- Modular split chamber design for easier transport and installation
- Stainless steel vacuum flanges with quick assembly clamps and integrated gas inlet and vacuum ports
Technical Specifications
| Parameter | Specification |
|---|---|
| Heating Zones | 12 independent zones, each 500 mm length |
| Total Heating Length | 6000 mm (20 feet) |
| Max Constant Temperature Zone | ~5500 mm (~18 feet) with 6 zones at same temperature ±2°C |
| Max Temperature | 1100°C (up to 1 hour) |
| Continuous Operating Temperature | 1050°C |
| Max Heating Rate | ≤ 20°C/min |
| Heating Element | Fe-Cr-Al alloy doped with Mo, rated to 1300°C |
| Insulation | High-purity fibrous alumina |
| Power Supply | AC 208-240V, Single Phase, 50/60 Hz, Max 30 kW total |
| Temperature Controllers | Touch screen digital PID controllers, 12 channels, ±1°C accuracy, 10 programs with 30 segments each |
| Thermocouples | 12 K-type thermocouples, one per zone |
| Tube Dimensions | Quartz tube 5″ OD x 4.7″ ID x 22′ (6500 mm) length |
| Vacuum Flanges | Stainless steel with quick assembly clamps; left flange with 1/4″ gas inlet valve and pressure gauge; right flange with KF40 vacuum port |
| Communication | RS485 port with included control software |
Typical Applications
Ideal for heat treatment of long strip materials, thin films, and samples requiring uniform temperature profiles under vacuum or controlled atmospheres. Commonly used in materials research, semiconductor processing, and advanced ceramics manufacturing.
Configuration & Operating Notes
The furnace is shipped in modular split sections for easier transport and installation. The included quartz tube and stainless steel vacuum flanges support vacuum and low-pressure operation below 0.2 bar. A two-stage pressure regulator must be installed on gas cylinders to limit pressure below 3 PSI for safe use. The furnace supports PC control via RS485 communication; however, the PC is sold separately. Optional accessories include a digital vacuum gauge, molecular pump for high vacuum, and recirculating water chiller for cooling.
Users should calibrate temperature profiles for accurate internal temperature measurement. The furnace is CE certified, with additional certifications available upon request. Vacuum operation is safe up to 1500°C, but quartz/mullite tubes are designed for vacuum and low-pressure conditions only.
