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1500C Compact Tube Furnace (2" O.D. ) with Complete Accessories - GSL-1500X-50-UL

In stock
Item Number: GSL1500X50
Transported by LTL Freight (Truck)


Upgrade to Eurotherm Temperature controller

GSL-1500X-50-UL is a compact high temperature 2" O.D tube furnace using 99.8% High Purity processing tube and SiC heating elements as heating elements. Vacuum sealing assembly is included to connect with 1/4" gas hose. The temperature of GSL1500X tube furnace is controlled by high precision SCR (Silicon Controlled Rectifier) digital controller with accuracy +/-1°C and 30 segments programmable up to 1500°C.


Furnace Structure
  • Double layer steel casing with two air cooling fans.
  • High purity fiber alumina board chamber for the best energy saving.
Power      4 KW Max.(20A breaker required)  
Voltage      Single Phase, 208 - 240V AC, 50/60 Hz.

Alumina Process tube

  • 99.8% High Purity Alumina processing tube.
  • 2" (50.8mm) O.D x 1.65" (42mm) I.D x 27.6" (700 mm) Length.
  • Two fibrous ceramic tube blocks are included for blocking heat radiation from the inside tube. (Ceramic blocks must be fully inserted into the furnace chamber beforeheating                                                                                                       


Vacuum Flange

Optional parts
  • One pair of SS 304 vacuum flange with double high-temperature silicone O-ring  is Included
  • Two needle valves with 1/4" pipe adapter are installed with flange
  • 2" default flange with 1/4'' Bard fittings, 1/4'' tube feedthrough port (for 1/4" O.D thermocouple insert) and a KF25 vacuum portclick bottom right picture to see details )
  • One Vacuum/ pressure gauge is installed one side flange
  • Vacuum level can reach 10-2 torr by a quality mechanical vacuum pump and 10-5 torr by a molecular pump.
  • Optional: In order to achieve high vacuum, you may replace the standard barbed hose fitting with the KF25 adapter, (please click underline to order), and digital vacuum gauge., as a well quality vacuum pump.
  • You may order pressure control module ( click picture below-right ) to keep chamber at constant pressure

Pressure Measurement / Monitoring

Mechanical Vacuum Gauge (included as standard accessory)
This mechanical vacuum gauge measures within a pressure range of -0.1 to 0.15Mpa. 
Digital Pressure Gauge (optional)
A gas-type independent (above 10mbar) digital vacuum gauge with the wide range between 3.8x10-5 to 1125 Torr. Aside from greater measurement precision, this gauge reduces risks of chamber explosions caused by the incorrect reading of gas pressures due to gas-type dependency.

Working Temperature

  • 1500 °C short time (less than 60 mins)
  • 1400 °C Continuous

Temperature Controller

  • FA-YD518P-AG temperature controller is included.
  • Proportional–integral–derivative control (PID control) and auto-tune function
  • 30 segments programmed with ramping, cooling and dwelling steps
  • Built-in over-temperature alarm and thermocouple failure alarm
  • +/- 1 ºC temperature control accuracy
  • Default DB9 PC communication port
  • MET Certified

Recommended Heating Rate:

  •      10°C / min (RT~1000°C)
  •      5°C / min (1000°C~1500°C)
Heating Zone
  • Heating Zone Length:                       6" (152 mm)
  • Constant Temperature Zone:             60 mm  (+/- 2°C)
  • Temperature Accuracy:                    +/- 1.0°C
Heating Element:

  • 1600°C grade SiC rods, 4 pcs,  ( Click picture below to order a replacement or spare one.
  • The heating element is consumables. Please click the picture below for detailed specs and order spare.
  • For SIC heating element, the Resistance change with life, please replace the aging rod properly.


     400 x 300 x 530 mm (15.7" x 12" x 21")

Net Weight:

    35 kg (80 lbs)

Shipping package size after crating     48" x 40" x 40"
Shipping weight    165 lbs
One-year limited warranty with lifetime support  (Consumable parts such as processing tubes, o-rings, and heating elements are not covered by the warranty, please order the replacement at related products below.)
Laptop, software & WiFi Control (Optional)
  • Brand new laptop with Microsoft Window 10 and Microsoft Office 2013 (30 days free trial) for immediate use.
  • Labview Based Temperature Control System (EQ-MTS01) enables user to edit temperature profile, manage heat-treatment recipe, record and plot data for MTI furnaces.
  • A wireless remote control provides up to 300 meters operating range.
  • Above features are available upon request at an extra cost (up to $1,000). Please contact us for more information.
  • Note:  The software is only compatible with MTI’s Yudian Temperature Controller

  • CE Certified
  • RTL(UL61010)  or CSA certification isavailable at extra cost. 
Application Notes
Attention Notes Performance degradation (i.e. furnace cannot reach the maximum temperature of 1500°C or it is drawing a higher than normal working current) can be expected due to the use of aged SiC heating elements. It is necessary to replace all the heating elements if the above symptoms were seen. Please order the replacements from the standard package list in below.

Click here to learn more about the installation of a gas regulator.
  • The tube furnaces with alumina tube are designed for use under vacuum and low pressure < 0.02 MPa
  • Attention: A two-stage pressure regulator must be installed on the gas cylinder to limit the pressure to below 3 PSI for safe operation. Click here to learn the installation of a gas regulator.
  • Never heat the furnace while the gas release valve is closed and a positive pressure condition exists within the furnace chamber. The pressure gauge must be used to closely monitor the chamber condition at all times during the heating process; please open the gas release valve immediately once the chamber pressure has reached over 3 PSI to prevent unforeseeable damages.
  • The flow rate for gasses should be limited to < 200 SCCM ( or 200ml/min )
  • Vacuum limit definition for all alumina tube furnaces: * Vacuum pressures may only be safely used up to 1500°C
  • NOTE: The mullite tube shall be considered as a consumable part. We strongly recommend user keep spare tubes in order to ensure the continuity of operation. The tube is not covered by Warranty. Use the link to order more.
Operation Instructions               
Part/No Descriptions Quantity Picture
GSL-34-01 1600°C grade SiC rods4 pcs in furnace 4 pcs
GSL-34-02 2 inch vacuum flange 1 sets
GSL-34-03 Pt-Rh to Pt Thermal Couples ( S Type ) with Alumina Protective Tube 1 set
GSL-34-06 2"OD x 27" L.High Purity Alumina (99.8%) Ceramic Tube- EQ-TA-50D-M700 1 pcs
GSL-34-05 Foam Al2O3 Tube Block 4 pcs
GSL-34-11 Stainless Steel Hook for moving the sample 1 pcs

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