OTF-1700X-6Z Six-Zone Split Tube Furnace with Alumina Tube and Air-Tight Flange
The OTF-1700X-6Z is engineered for laboratory applications demanding precise high-temperature treatment with controlled atmosphere capabilities. This split tube furnace accommodates samples within a robust alumina tube featuring a 60 mm outer diameter and 1800 mm length, sealed by an air-tight water-cooled vacuum flange to maintain low-pressure or vacuum environments up to 3 psig.
Its six independently controlled heating zones span a total length of 1400 mm, enabling the creation of stable thermal gradients up to 10°C per centimeter. The furnace reaches temperatures up to 1700°C within 60 minutes and supports continuous operation between 800°C and 1600°C, with vacuum operation possible below 1450°C. The heating elements are high-grade molybdenum disilicide (MoSi2), and temperature is monitored by B-type thermocouples for accuracy.
Key Features
- Six heating zones with individual PID controllers for precise temperature management.
- Alumina tube (Ø60 mm × 1800 mm) with included water-cooled vacuum flange.
- Maximum temperature of 1700°C with uniform zone of 1000 mm at ±5°C stability at 1400°C.
- Heating rate less than 10°C per minute for controlled ramping.
- RS485 serial communication port compatible with LabVIEW-based control software for recipe editing and data logging.
- Double-layer mild steel furnace case with cooling fans maintaining surface temperature below 70°C.
- Overheating and broken thermocouple interlock and alarm for operational safety.
Technical Specifications
| Parameter | Specification |
|---|---|
| Maximum Temperature | 1700°C (within 60 minutes) |
| Continuous Operating Range | 800 – 1600°C |
| Vacuum Operation Temperature | Below 1450°C |
| Heating Zones | 6 zones (200 + 200 + 300 + 300 + 200 + 200 mm) |
| Total Heating Length | 1400 mm |
| Uniform Temperature Zone | 1000 mm at ±5°C at 1400°C |
| Heating Rate | Less than 10°C/min |
| Heating Element | 1800°C Grade Molybdenum Disilicide (MoSi2) |
| Thermocouple Type | Type B |
| Power Supply | 208-240 VAC, 3 phase, 50/60 Hz, 100 A, 30 kVA (options for 380-480 VAC available) |
| Furnace Case | Double-layer mild steel with cooling fans, surface temperature < 70°C |
| Pressure Limit | Less than 3 psig |
| Temperature Controllers | 6 PID programmable controllers, 50 temperature segments, ±1°C accuracy, 0.3°C resolution, interlock/alarm for overheating and thermocouple failure |
| Communication Interface | RS485 serial port with LabVIEW-based software for temperature profile editing and data recording |
Typical Applications
Ideal for materials research requiring controlled atmosphere heat treatment, sintering, annealing, and thermal gradient experiments. Suitable for vacuum or low-pressure processes involving ceramics, metals, and advanced materials.
Configuration & Operating Notes
The furnace includes one set of water-cooled vacuum flanges and two alumina fibrous thermal blankets. Optional power supply voltages are available upon request. Users should ensure proper cooling and vacuum system integration. Safety interlocks protect against overheating and thermocouple failure. The LabVIEW-based control system facilitates recipe management and data logging for reproducible thermal processes.
