GSL-1200X-MH4 Tube Furnace with 300°C Max Temperature, 90mm O.D. Quartz Tube, Vacuum/Gas Insulated Jacket for High Magnetic Field Annealing
The GSL-1200X-MH4 tube furnace is engineered specifically for material annealing processes that require operation within superconducting high magnetic fields. Its design addresses the challenge of maintaining precise temperature control while minimizing magnetic interference, making it ideal for research and development in advanced material science and magnetically sensitive applications.
This furnace features a 90mm outer diameter quartz tube with a 58mm inner diameter, housed within a vacuum and gas insulated jacket to ensure thermal efficiency and safety. The furnace structure is fabricated from SS316L stainless steel, a material chosen for its near-zero magnetic permeability, which prevents distortion of the magnetic field during operation. The heating element is a center spiral type silicon carbide filament, providing uniform heating across a 1000mm heating zone with a stable 700mm constant temperature region.
Key Features
- Maximum temperature of 300°C for short durations, with continuous operation at 250°C.
- Vacuum sealed flange system with optional fittings for vacuum or high-pressure gas applications.
- PID automatic temperature controller with auto-tune and 30 programmable segments for precise process control.
- Heating rate up to 10°C per minute and temperature accuracy within ±1°C using a K-type thermocouple.
- Gas-cooled outer layer maintains external surface temperature below 30°C for safe handling.
- Compatible with vacuum pumps achieving pressures down to 10^-5 torr with molecular pumps.
- Constructed from SS316L stainless steel to minimize magnetic permeability and interference.
Technical Specifications
| Parameter | Specification |
|---|---|
| Model | GSL-1200X-MH4 |
| Maximum Temperature | 300°C (less than 1 hour) |
| Continuous Operating Temperature | 250°C |
| Heating Rate | Up to 10°C/min |
| Heating Zone Length | 1000 mm |
| Constant Temperature Zone | 700 mm ± 2°C |
| Tube Dimensions (Quartz) | ID 58 mm × OD 90 mm × Length 622 mm |
| Heating Element | Center spiral SiC filament (25 mm OD × 20 mm ID × 400 mm length) |
| Power Supply | 208-240 VAC, single phase, 2000 W |
| Temperature Controller | PID with auto-tune, 30 programmable segments, K-type thermocouple, ±1°C accuracy |
| Vacuum Capability | Down to 50 mtorr with mechanical pump; 10^-5 torr with molecular pump |
| Material | SS316L stainless steel (low magnetic permeability) |
Typical Applications
Ideal for annealing and heat treatment of materials within superconducting magnets or other environments requiring minimal magnetic interference. Suitable for research in magnetic materials, semiconductor processing, and advanced material synthesis under controlled vacuum or low-pressure gas atmospheres.
Configuration & Operating Notes
The furnace includes a special vacuum flange compatible with its three-layer tube design. Optional fittings such as KF25 adapters or 304SS Swagelok® tube fittings are available separately to accommodate different vacuum or gas supply requirements. Users must install a two-stage pressure regulator on gas cylinders to limit pressure below 3 PSI for safe operation. The quartz tube design supports vacuum and low-pressure gas environments below 0.2 bar. Gas flow rates should be limited to under 200 SCCM to reduce thermal shock risks to the tube. Temperature calibration and process programming are facilitated by the built-in PID controller with auto-tune and programmable segments.
