OTF-1200X-7Z-8 Seven-Zone Split Tube Furnace with 82.6″ Heating Length and 8″ ID Quartz Tube, Up to 1200°C
The OTF-1200X-7Z-8 furnace is engineered for laboratory processes demanding precise thermal management over a long heating zone. Its seven independently controlled heating zones span a total length of 2100 mm (82.6 inches), enabling the creation of a highly uniform temperature region of 1350 mm with a stability of ±2°C. This capability supports complex thermal profiles and gradient experiments in materials research and processing.
The furnace incorporates an 8-inch inner diameter quartz tube with stainless steel vacuum flanges, allowing for controlled atmosphere or vacuum conditions down to 10-5 torr with optional turbopumping. The system includes two needle valves for gas inlet and outlet, a pressure gauge, and a water-cooled flange jacket to maintain operational integrity under high temperatures up to 1200°C.
Key Features
- Seven programmable digital temperature controllers with K-type thermocouples, providing ±1°C accuracy and PID control with 30 programmable segments.
- Double-layer steel casing with dual cooling fans to maintain surface temperatures below 70°C for safety and energy efficiency.
- High-purity fibrous alumina insulation and buffer thermal blocks included; quartz thermal blocks available optionally for enhanced cleanliness.
- Electric cylinders automate the opening and closing of the top split cover for ease of access and sample handling.
- Integrated vacuum sealing system with stainless steel 304 flanges, double high-temperature silicone O-rings, and water cooling jacket.
- RS485 communication port with optional software for laptop control and monitoring of temperature profiles.
- Optional Eurotherm 3000 controllers available for enhanced temperature accuracy of ±0.1°C and recipe management.
Technical Specifications
| Parameter | Specification |
|---|---|
| Model | OTF-1200X-7Z-8 |
| Heating Zones | 7 zones, each 300 mm length |
| Total Heating Length | 2100 mm (82.6″) |
| Uniform Temperature Zone | 1350 mm ±2°C |
| Maximum Temperature | 1200°C |
| Continuous Operating Temperature | 1100°C |
| Maximum Heating Rate | 10°C/min |
| Tube Material and Size | Quartz tube, 8.5″ OD x 8.1″ ID x 60″ L (216 mm OD x 206 mm ID x 2500 mm L) |
| Vacuum Flanges | SS 304 with double high-temp silicone O-rings and water cooling jacket |
| Vacuum Level | 10-2 torr (mechanical pump), 10-5 torr (turbopump optional) |
| Temperature Controllers | Seven digital controllers with PID, ±1°C accuracy, MET and CE certified |
| Power Supply | AC 460 VAC, Three Phase, 50/60 Hz, max 50 kW consumption |
Typical Applications
This furnace is suited for advanced materials synthesis, annealing, diffusion studies, and semiconductor processing requiring segmented temperature control and vacuum or controlled atmosphere environments. It supports research in ceramics, thin films, and nanomaterials where precise thermal gradients and long uniform zones are critical.
Configuration & Operating Notes
The furnace includes a quartz tube, vacuum sealing flanges with pressure gauge and ball valve, and seven K-type thermocouples. Optional accessories include a large vacuum pump, digital vacuum gauge, gas mixing and delivery system, and vapor generating system. The top split cover is electrically operated for safe and convenient sample access. Proper ventilation and electrical installation with a 70 A breaker are required. The power cord is supplied without a plug. Safety features include over-temperature protection and alarms to enable unattended operation.
