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1800C Compact Vacuum Tube Furnace (60mm OD) with Kanthal Heating Elements - GSL-1800X-KS60-UL

In stock
Item Number: GSL1800XS60


GSL-1800X-KS60 is a compact tube furnace with Kanthal Super-1900C Grade MoSi2 Heating Elements, and high-quality alumina refractory board with ZrO2 liner. Vacuum sealing flanges with valves, vacuum gauge, and a high purity alumina processing tube (60mmO.Dx 610 mm L) are included for immediate use. The temperature of the GSL-1800X-KS60 tube furnace is controlled by a 30 segment programmable high precision SCR (Silicon Controlled Rectifier) digital controller with an accuracy of +/-1 ºC. This tube furnace has a max. working temperature up to 1800 ºC. It is widely used in material & chemical researching labs to sinter all types of new material samples under vacuum and other gas conditions. (Updated to UL Ready Version from 09/09/2015)

Furnace Structure
  • Double-layer steel casing with air cooling.
  • Two cooling fans inside to keep case temperature < 60oC.
  • High purity Alumina refractory chamber with 15mm  2500ºC grade YSZ ceramic liner for max energy saving.
  • Alumina tube, vacuum flange, gauge & valves are included.
  • Super-energy saving: only consumes <1600W power when kept at 1800°C. 
Power Consumption Max. 2.5 KW
Input Voltage Single Phase, 208V~240V AC, 50/60 Hz   (30A breaker required)
Working Temperature
  • 1750oC continuous
  • 1800oC Max. < 1 hours
Max. Heating / Cooling Rate
5oC / min ( T< 1600oC ); 2oC / min ( T>1600oC )
Heating Zone Length
125 mm
Constant Temperature Zone
50 mm ( +/- 3oC)    and  60 mm  ( +/- 5oC )   70 mm +/- 10oC   @ 1500oC
Note: If temperature lower, CTZ will short, and Temp higher, CTZ will be longer
Heating Elements
Tube Materials
High purity Al2O3 ceramic, Purity > 99.9%
Temperature controller
  • Eurotherm 3000 Series Programmable Temperature Controller.
  • 1 program, 24 segments programmed with ramping, cooling and dwelling steps
  • Temperature Accuracy:  ±  0.1ºC
Laptop & software (Optional)
  • Brand new laptop with Microsoft Windows 10 and Microsoft Office 2013 (30 days free trial) for immediate use.
  • Eurotherm iTools software enables the user to edit temperature profiles and manage heat-treatment recipes for MTI furnaces.
  • Note: Due to the complexity of the controller operation, we strongly suggest customers to purchase this PC control kit along with the furnace and our engineers will have the software & hardware pre-installed. Please note that this PC control kit is not for sale individually.
Processing Tube
  • Premier Grade alumina tube made in the USA
  • ID: 54mm x OD: 60 mm x 790 mm length
  • Four fibrous ceramic tube blocks are included for blocking heat radiation from inside tube (Ceramic blocks must be fully inserted into the furnace chamber before heating).
  • For 60mm tubes, it is recommended that customers purchase two pairs of tube support to prevent the tube from bending under high temperature (please click on the last picture to order).
Sealing Flanges
  • One pair sealing flange with double silicone high-temperature O-ring is included.
  • Two SS needle valves and one dial vacuum gauge are installed with flange for immediate use.
  • Vacuum pressure can reach 50 mTorr by a quality mechanical vacuum pump and 10^-5 torr by turbo molecular pump. Please click the picture below to see flange assembling details.
Fitting Ports
Vacuum Level
  • Limited by a vacuum pump
    • 50 mtorr can be achieved by a mechanical pump
    • 10^-5 torr can be reached by molecular pump
  • The vacuum pump is not included, please order separately by clicking here
Power Cable & Plug
(click here to order plugs from us)
  • 10 feet long 10-3 AWG heavy duty UL approved power cable is included. Extra length cable can be ordered by click picture below-left
  • The plug is not included. You can order from your local hardware store according to female plug in your lab, or order from the link below right (30A plug)
445 L x 380 W x 615 H  mm
Net Weight 150Kg
Shipping Dimensions 47"x45"x45"(1200Lx1150Wx1150Hmm)
Shipping Weight 350 lbs
Warranty One-year limited manufacturer warranty with lifetime support (consumable parts such as furnace liner, processing tubes, and O-rings are not covered by the warranty, please order replacements at related products below).
  • CE Certified
  • NRTL (UL61010) or CSA certification at extra cost.( please click marks below to learn details )
Application Notes
Operation Video         Video: How To Set Up Furnace            

 4 pcs
 Vacuum Sealing and Connecting Flanges
 with 2 Pairs of High-Temperature Vacuum Gasket  
 1 set
 B type Thermocouple Ø4.8×L175mm
 1 set
 Alumina tube Tube ( 60OD x 54ID x 790L, mm )
 1 pcs
 Foam Al2O3 Tube Block
 4 pcs

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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.