This article discusses the key features and specifications of eXPRESS-Line Furnaces offered by Thermcraft, a manufacturer of bespoke furnaces and ovens for laboratory and industrial purposes.
1100°C Protégé Compact Split Tube Furnace
The key features of the 1100°C Protégé Compact Split Tube Furnace (Figure 1) are as follows:
- Maximum operating temperature is 1100°C (2000°F)
- Two-inch inner diameter heated chamber
- Process tube diameter range up to 1¼"
- Low mass Fibercraft™ vacuum formed ceramic fiber heater with embedded resistance wire
- Integrated circuit breaker
- 120 or 240 volts electrical requirements
- Includes Type K inconel sheathed thermocouple
- Single set point controller
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Figure 1. The 1100°C Protégé Compact Split Tube Furnace
The following table summarizes the specifications of different models of the 1100°C Protégé Compact Split Tube Furnace:
Model |
XST-2-0-12-Mini-120 |
XST-2-0-12-Mini-240 |
Heated chamber size |
2" ID x 12" long |
2" ID x 12" long |
Heat zones |
1 |
1 |
Heat zone length |
12" |
12" |
Electrical requierments |
120V |
208V/240V |
Watts |
1200 |
832/1200 |
Amps |
10 |
4.0/5.0 |
Exterior Size (H x D x W) |
14" x 11" x 16" |
14" x 11" x 16" |
1200°C Box Furnace
The key features of the 1200°C Box Furnace (Figure 2) are as follows:
- Ceramic refractory heater with embedded resistance wire
- Maximum operating temperature is 1200°C (2200°F)
- 230 volts electrical requirements
- Two different chamber sizes
- Single set point controller
- Includes Type K inconel sheathed thermocouple
- Integrated circuit breaker
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Figure 2. The 1200°C Box Furnace
The following table summarizes the specifications of different models of the 1200°C Box Furnace:
Model |
XSB-8-8-12-1C |
XSB-12-12-18-1C |
Chamber width |
8" |
12" |
Chamber Height |
8" |
12" |
Chamber Depth |
12" |
18" |
Watts |
3100 |
6000 |
Amps |
13.5 |
26.1 |
Exterior Size (W x D x H) |
23" x 18" x 24" |
26" x 30" x 27" |
1100°C Split Tube Furnace with Process Tubes up to 2¾" Diameter
The following are the key features of the 1100°C Split Tube Furnace (Figure 3) with process tubes up to 2¾" diameter:
- Fibercraft™ vacuum formed ceramic fiber heating element
- Process tube diameter range up to 2¾"
- 3" inner diameter heated chamber
- 230volts electrical requirements
- Maximum operating temperature is 1100°C (2000°F)
- Heated chamber length range of 12", 18", 24" or 36"
- Removable/customizable vestibule blocks
- It is possible to mount horizontally or vertically
- Brackets included for vertical mounting
- 10' interconnecting power cable is provided when procured with a control system
- Includes Type K inconel sheathed thermocouple(s) one per zone
- Provided with two vestibule blocks one for each end, with optional additional vestibule blocks
- Hole sizes include0.50", 1.00", 1.50" 2.00", 2.5", and 2.75"
- Solid as well as bespoke sizes are also available
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Figure 3. 1100°C Split Tube Furnace
The following table summarizes the specifications of different models of the 1100°C Split Tube Furnace.
Model |
XST-3-0-12-1V |
XST-3-0-18-1V |
XST-3-0-24-1V |
XST-3-0-36-1V |
XST-3-0-18-3V |
XST-3-0-24-3V |
XST-3-0-36-3V |
Heated Chamber Size |
3" ID x 12" long |
3" ID x 18" long |
3" ID x24" long |
3" ID x 36" long |
3" ID x 18" long |
3" ID x24" long |
3" ID x 36" long |
Heat Zones |
1 |
1 |
1 |
1 |
3 |
3 |
3 |
Heat Zone Length(s) |
12" |
18" |
24" |
36" |
3" + 12" + 3" |
6" + 12" + 6" |
6" + 24" + 6" |
Watts |
1700 |
2550 |
3400 |
5100 |
2550 |
3400 |
5100 |
Amps |
7.4 |
11.1 |
14.8 |
22.2 |
11.1 |
14.8 |
22.2 |
Control System |
1-1-20-230-E15SK |
1-1-20-230-E15SK |
1-1-20-230-E15SK |
1-1-40-230-E15SK |
3-1-20-230-E15SK |
3-1-20-230-E15SK |
3-1-40-230-E15SK |
Exterior Size (H x D x W) |
17.5" x 13.5" x 18" |
17.5" x 13.5" x 24" |
17.5" x 13.5" x 30" |
17.5" x 13.5" x 42" |
17.5" x 13.5" x 24" |
17.5" x 13.5" x 30" |
17.5" x 13.5" x 42" |
1100°C Split Tube Furnace with Process Tubes up to 5½" Diameter
The key features of the 1100°C Split Tube Furnace with process tubes up to 5½" diameter are listed below:
- Maximum operating temperature is 1100°C (2000°F)
- 6" inner diameter heated chamber
- Process tube diameter range up to 5½"
- 230 volts electrical requirements
- Heated chamber length range of 24" or 36"
- Fibercraft™ vacuum formed ceramic fiber heating element
- Vertical or horizontal mounting is possible
- Brackets incorporated for vertical mounting
- Removable/customizable vestibule blocks with two vestibule blocks one for each end and optional additional vestibule blocks
- 10' interconnecting power cable is part of the purchase o f a control system
- Incorporates Type K inconel sheathed thermocouple(s) one per zone
- Hole sizes include0.50", 1.00", 1.50" 2.00", 2.5", 2.75", 3.00, 3.50", 4.00", 4.50", 5.00", and 5.50"
- Solid as well as bespoke sizes are also available
The specifications of different models of this Split Tube Furnace are listed in the following table:
Model |
XST-6-0-24-1V |
XST-6-0-36-1V |
XST-6-0-24-3V |
XST-6-0-36-3V |
Heated Chamber Size |
6" ID x 24" long |
6" ID x 36" long |
6" ID x 24" long |
6" ID x 36" long |
Heat Zones |
1 |
1 |
3 |
3 |
Heat Zone Length(s) |
24" |
36" |
6" + 12" + 6" |
6" + 24" + 6" |
Watts |
6800 |
10200 |
6800 |
10200 |
Amps |
29.6 |
44.4 |
29.6 |
44.4 |
Control System |
1-1-40-230-E15SK |
1-1-60-230-E15SK |
3-1-40-230-E15SK |
3-1-60-230-E15SK |
Exterior Size (H x D x W) |
23" x17" x30" |
23" x17" x42" |
23" x17" x30" |
23" x17" x42" |
1200°C Split Tube Furnace with Process Tubes up to 2¾" Diameter
The following are the key features of the 1200°C Split Tube Furnace (Figure 4) with process tubes up to 2¾" diameter:
- 3" inner diameter heated chamber
- Ceramic refractory heater with embedded resistance wire
- Maximum operating temperature is 1200°C (2200°F)
- Process tube diameter range of up to 2¾"
- 230 volts electrical requirements
- Heated chamber length range of 12", 18", 24" or 36"
- Horizontal or vertical mounting is possible
- Brackets incorporated for vertical mounting
- 10' interconnecting power cable is part of the purchase o f a control system
- Includes Type K inconel sheathed thermocouple(s) one per zone
- Removable/customizable vestibule blocks with two vestibule blocks one for each end and optional additional vestibule blocks
- Hole sizes include 0.50", 1.00", 1.50" 2.00", 2.5", and 2.75"
- Solid as well as custom sizes are also available
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Figure 4. 1200°C Split Tube Furnace
The specifications of different models of this Split Tube Furnace are listed in the following table:
Model |
XST-3-0-12-1C |
XST-3-0-18-1C |
XST-3-0-24-1C |
XST-3-0-36-1C |
XST-3-0-18-3C |
XST-3-0-24-3C |
XST-3-0-36-3C |
Heated Chamber Size |
3" ID x 12" long |
3" ID x 18" long |
3" ID x 24" long |
3" ID x 36" long |
3" ID x 18" long |
3" ID x 24" long |
3" ID x 36" long |
Heat Zones |
1 |
1 |
1 |
1 |
3 |
3 |
3 |
Heat Zone Length(s) |
12" |
18" |
24" |
36" |
3" + 12" + 3" |
6" + 12" + 6" |
6" + 24" + 6" |
Watts |
2260 |
3390 |
4520 |
6780 |
3390 |
4520 |
6780 |
Amps |
9.8 |
14.8 |
19.7 |
29.5 |
14.8 |
19.7 |
29.5 |
Control System |
1-1-20-230-E15SK |
1-1-20-230-E15SK |
1-1-20-230-E15SK |
1-1-40-230-E15SK |
3-1-20-230-E15SK |
3-1-20-230-E15SK |
3-1-40-230-E15SK |
Exterior Size (H x D x W) |
17.5" x 13.5" x 18" |
17.5" x 13.5" x 24" |
17.5" x 13.5" x 30" |
17.5" x 13.5" x 42" |
17.5" x 13.5" x 24" |
17.5" x 13.5" x 30" |
17.5" x 13.5" x 42" |
1200°C Split Tube for Process Tubes up to 5½" Diameter
The key features of the 1200°C Split Tube Furnace with process tubes up to 5½" diameter are given as below:
- 6" inner diameter heated chamber
- Ceramic refractory heater with embedded resistance wire
- Maximum operating temperature is 1200°C (2200°F)
- Process tube diameter range of up to 5½"
- 230 volts electrical requirements
- Heated chamber length range of 24" or 36"
- Horizontal or vertical mounting is possible
- Brackets incorporated for vertical mounting
- 10' interconnecting power cable is part of the purchase o f a control system
- Features Type K inconel sheathed thermocouple(s) one per zone
- Removable/customizable vestibule blocks with two vestibule blocks one for each end and optional additional vestibule blocks
- Hole sizes include 0.50", 1.00", 1.50" 2.00", 2.5", and 2.75"
- Solid as well as custom sizes are also available
The specifications of different models of this Split Tube Furnace are summarized in the following table:
Model |
XST-6-0-24-1C |
XST-6-0-36-1C |
XST-6-0-24-3C |
XST-6-0-36-3C |
Heated Chamber Ssize |
6" ID x 24" long |
6" ID x 36" long |
6" ID x 24" long |
6" ID x 36" long |
Heat Zones |
1 |
1 |
3 |
3 |
Heat Zone Length(s) |
24" |
36" |
6" +12" + 6" |
6" + 24" + 6" |
Watts |
9200 |
13800 |
9200 |
13800 |
Amps |
40.0 |
60.0 |
40.0 |
60.0 |
Control System |
1-1-40-230-E15SK |
1-1-60-230-E15SK |
3-1-40-230-E15SK |
3-1-60-230-E15SK |
Exterior Size (H x D x W) |
23" x17" x30" |
23" x17" x42" |
23" x17" x30" |
23" x17" x42" |
1200°C Solid Tube Furnace with Process Tubes up to 2¾" Diameter
The key features of the 1200°C Solid Tube Furnace (Figure 5) with process tubes up to 2¾" diameter are given as below:
- 3" inner diameter heated chamber
- Process tube diameter range up to 2¾" Diameter
- Maximum operating temperature is 1200°C (2200°F)
- Ceramic refractory heater with embedded resistance wire
- 230 volts electrical requirements
- Heated chamber length range of 12", 18" or 24"
- Includes Type K inconel sheathed thermocouple
- Horizontal or vertical mounting is possible
- 10' interconnecting power cable is part of the purchase o f a control system
- Stainless steel exterior shell
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Figure 5. The 1200°C Solid Tube Furnace
The specifications of different models of the 1200°C Solid Tube Furnace are provided in the following table:
Model |
XSL-3-0-12-1C |
XSL-3-0-18-1C |
XSL-3-0-24-1C |
Heated Chamber Size |
3" ID x 12" long |
3" ID x 18" long |
3" ID x 24" long |
Heat Zones |
1 |
1 |
1 |
Heat Zone Length(s) |
12" |
18" |
24" |
Watts |
2260 |
3440 |
4520 |
Amps |
9.8 |
14.9 |
19.7 |
Control System |
1-1-20-230-E15SK |
1-1-20-230-E15SK |
1-1-20-230-E15SK |
Exterior Size (DIA x H) |
13"OD x 15"long |
13"OD x 21"long |
13"OD x 27"long |
About Thermcraft
Thermcraft Inc. manufacturer's Custom Industrial Ovens, Laboratory Furnaces, and other furnace related supplies is a recognized leader in high temperature heating equipment. Their state-of-the-art facility and design software will allow their staff to meet your requirements for any furnace or oven configuration that you may need.
They have a worldwide network of sales representatives and engineers that can help you with any of your heating equipment requirements. Along with custom lab ovens, industrial furnaces and ceramic heaters, they offer a wide range of related products; from relatively simple items such as insulation, thermocouples, and heating elements to more complex, full-scale heat treatment equipment such as control panels with LED digital displays. Customized to fit your needs is always their goal.

This information has been sourced, reviewed and adapted from materials provided by Thermcraft.
For more information on this source, please visit Thermcraft.