OTF-1200X-VT-80 Split Vertical Tube Furnace with 80mm Quartz Tube, Vacuum Flanges, and 1100°C Max Temperature
The OTF-1200X-VT-80 is engineered for laboratory applications requiring precise thermal processing under vacuum or controlled gas atmospheres. Its vertical split tube design facilitates rapid sample heating and quenching, making it suitable for quenching tests and accurate temperature measurements. The furnace incorporates an 80 mm outer diameter high-purity quartz tube, which supports a maximum working temperature of 1200°C, ensuring chemical inertness and thermal stability during processing.
This model features a robust double-layer steel casing with air cooling to maintain surface temperatures below 65°C, enhancing operational safety. The heating zone is 440 mm long with a 150 mm constant temperature region controlled to ±1°C. The furnace is mounted on a heavy-duty mobile cart for convenient relocation within the laboratory environment.
Key Features
- High-purity quartz processing tube (80 mm OD, 72 mm ID, 1000 mm length) with vacuum-sealed stainless steel flanges.
- Maximum temperature of 1100°C achievable within one hour, with continuous operation up to 1000°C.
- Precision MET-certified temperature controller offering 30 programmable segments and ±1°C accuracy.
- Heating element composed of Fe-Cr-Al alloy doped with molybdenum, rated up to 1300°C.
- Vacuum capability down to 10-5 Torr with molecular pump; leak rate less than 5 mTorr/min.
- Integrated vacuum gauge and valves with gas inlet/outlet ports featuring 1/4″ barb connectors.
- Optional upgrades include mullite tubes (60-100 mm OD) for operation up to 1250°C and advanced temperature control software.
Technical Specifications
| Parameter | Specification |
|---|---|
| Furnace Structure | Double-layer steel with air cooling (case temperature <65°C) |
| Power | 6 kW |
| Voltage | AC 208-240V, Single Phase, 50/60 Hz |
| Maximum Temperature | 1100°C (within 1 hour) |
| Continuous Operating Temperature | 1000°C per zone |
| Maximum Heating Rate | ≤ 20°C/min |
| Processing Tube | High purity quartz, 80 mm OD × 72 mm ID × 1000 mm length, max 1200°C working temperature |
| Heating Zone Length | 440 mm (single zone) |
| Constant Temperature Zone | 150 mm (±1°C) |
| Temperature Accuracy | ±1°C |
| Temperature Controller | MET certified, 30 programmable segments, PID auto-tune, over-temperature protection, RS485 communication port |
| Vacuum & Fitting Ports | Two stainless steel flanges with vacuum gauge and valves, gas inlet/outlet with 1/4″ barb connectors |
| Vacuum Level | 10-2 Torr (mechanical pump), 10-5 Torr (molecular pump), leak rate < 5 mTorr/min |
| Heating Element | Fe-Cr-Al alloy doped with Mo, max 1300°C |
Typical Applications
Ideal for quenching tests, temperature profiling, and thermal treatments requiring controlled atmospheres under vacuum or flowing gases. Suitable for research in materials science, ceramics, and thin film deposition processes.
Configuration & Operating Notes
The furnace includes vacuum flanges with integrated gauges and valves. Optional accessories include mullite tubes for higher temperature operation and advanced temperature control software packages. Users must install a two-stage pressure regulator on gas cylinders to limit pressure below 3 PSI for safe operation. The quartz tube is designed for vacuum and low-pressure use below 0.2 bar and temperatures up to 1000°C under vacuum conditions. Calibration before use is recommended to ensure temperature accuracy.
