Browse Categories

1500C Three Zone Split Tube Furnace with Flange & Alumina Tube (80 mm O.D.) - OTF-1500X-III

In stock
Item Number: OTF1500XIII
Transported by LTL Freight (Truck)


Upgrade to Eurotherm Temp controller( 3 zone)+15" Laptop+ USB Cable
OTF-1500X-III- is a split three-zone tube furnace with mullite tube and conventional flange working up to 1500°C. Three 30 segments temperature controllers are installed with S type thermal couples and  +/ - 1°C accuracy. It is an excellent furnace for exchanging processing tube for multi-purpose.  

Note: New safety feature: An interlock system has been integrated into the furnace structure since June.2015

Power Input 9KW
Working Voltage  AC220V Single-phase 50/60Hz ( 50 A breaker required)
Max. Working Temperature 1500°C 《 1 hours
Continuously Working Temperature 1400°C
Recommend Heating rate 5°C/min.
Processing Tube

Tube material: Alumina Tube
Size: 80 OD × 74 ID × 1200 L  mm
Optional tube material: Mullite tube
Size:   82 O.D x 73 I.D x 1200mm L 

Heat Zone Length
  • Three heating zones:  200 mm / each  (Included 20 mm spacing)
  • Total heating zone length:  600 mm  
  • Constant Temperature Zone length:   350mm  (If set 3 zone at same temperature) +/- 2ºC.
  • Accept processing tube up to 100 mm diameter

Temp. Profile at 1450ºC

84mm O.D Tube
(click to enlarge)
Overall Dimensions 915 mm × 660 mmW × 762 mmH
Temperature Controllers

  • PID automatic control with 30 programmable segments for precise control of heating rate, cooling rate and dwell time.
  • Built-in overheating & broken thermocouple protection.
  • Over-temperature protection and alarm allow for operation without attendant(s).
  • +/- 1 ºC temperature accuracy.
  • Three S-type thermocouples (one for each zone).
  • RS485 Communications Port.
  • Optional:  
    • The furnace may be operated by PC by installing a control module. Please order an MTS-02 control module at extra cost. 
    • If you order the PC control module together with the furnace, we will install and test it before shipping. We recommend you to order a computer laptop from us to avoid software installation problems. For more information please click here.
European Temperature Controllers (optional upgrade)
  • 1 heating channel
  • 1 program of 8 or 24 segment
  • Alarm Relay: Form 'A' and Form ‘C’ built-in 
  • Digital Communications: RS485
  • Temperature Accuracy:  ±  0.1ºC
  • Recipes: Using a PC tool recipes can be created that can be used to change the operating parameters of the 3000 simply by selecting a new recipe via the HMI. This is very useful where multiple products are processed using the same controller but require different parameters to be set.
Laptop, software & WiFi Control(Optional)
  • Brand new laptop with Microsoft Windows 10 and Microsoft Office 2013 (30 days free trial) 
  • Labview Based Temperature Control System (EQ-MTS01) enables the user to edit temperature profiles, manage heat-treatment recipes, record and plot data for MTI furnaces.
  • A wireless remote control provides up to 300 meters of operating range.
  • The above features are available upon request at an extra cost (up to $1,000).
Vacuum Level
  • 10E-2 torr by quality mechanical vacuum pump
  • 10-5 torr by molecular pump

Thermal Block Placement
  • Two thermal blacks are included. Please click the picture below to learn how to place them inside tube
  • You may order flange support to avoid tube rotating ( click Pic below right )
Heating Elements & Thermal couples
Dimension & Net Weight  860 L x 540 W x 750 H (mm)  Weight: 160 Kg
Shipping Weight & Dimensions 465 lbs; 52" x 40" x 46"

Application Notes
  • The tube furnaces with mullite tubes are designed for use under vacuum and low pressure < 0.02 Mpa
  • Never use the graphite crucible and the alumina tube.
  • Attention: A two-stage pressure regulator must be installed on the gas cylinder to limit the pressure to below 3 PSI for safe operation. 
  • The flow rate for gases should be limited to < 200 SCCM ( or 200ml/min )
  • Vacuum pressures may only be safely used up to 1300°for all mullite tube furnaces:
  • Customized long heating zone up to 1200 mm L  with 700 mm uniform temperature zone ( +/- 5°C) , and 1800mm mullite tube is available upon request; ( click the picture below to see sketch)
  • 5 zones     6 zones
Operation Instructions

  • One-year limited warranty with lifetime support (consumable parts such as processing tubes, and O-rings are not covered by the warranty, please order replacements at related products below.).  
  • ATTENTION: Any damages caused by the use of corrosive and acidic gases are not under the coverage of MTI One Year Limited Warranty.

  • CE Certified
  • NRTL (UL61010) or CSA certification is available upon request at extra cost.

Related Products

Shopping Cart
Your cart is empty.
Please clear the browsing history before ordering the product. Otherwise, availability and price are not guaranteed.
Mailing Lists
MTI sponsorships:
MTI Sponsors Thermoelectrics Workshop

MTI-UCSD Battery Fabrication Lab

MTI Sponsors the Postdoctoral Awards

Upcoming Shows:

245th ECS Meeting May 26-30 San Francisco CA Booth 108

Hydrogen Tech Expo June 26-27 Houston TX Booth 567

2024 MRS Fall Meeting December 1-6 Boston MA Booth 901

AABC US December 9-12 Las Vegas NV

Click here to see our past conferences

1. Prices listed online are valid for the US market and who pay by credit card only. There will be extra charges for shipping & handling. Prices vary from country to country.
2. We may add extra charges for paper orders and NET 30 terms due to extra labor costs.
3. The prices listed are subject to change without notice.