ZHENGZHOU HENGTONG FURNACE CO,. LTD
8" OD Quartz Chamber Furnace Horizontal Vacuum /Atmosphere Quartz Chamber Furnace
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The HT-1200X-H8 is a high-performance horizontal chamber furnace featuring a quartz chamber with dimensions of Ø7.5" inner diameter (ID) and 13.4" length (L). Equipped with a hermetically sealed chamber, it enables precise heat treatment processes under controlled atmospheric environments or vacuum conditions, supporting a maximum operating temperature of up to 1100°C.

Its airtight design ensures excellent gas tightness, effectively preventing external air infiltration and maintaining stable internal conditions—ideal for applications requiring strict atmosphere control and contamination-free heat treatment. This furnace combines reliable temperature uniformity with versatile environmental adaptability, catering to diverse industrial and laboratory heating needs.

SPECIFICATIONS

Power

Voltage: Single-phase 208 - 240 VAC / 50/60Hz, (25 A breaker installed)

3 KW max. 

Note: Power cable included but without the plug. Please install a plug by your own or choose a plug according to your country or your lab requirements


Working Temperature

<1100°C under ambient pressure

<1000°C under vacuum

GE214 quartz tube is available for 1150oC working temperature at extra cost.

Heating Rate

<20°C/ min

Recommended: 10°C/ min

Heating Elements    

Ni-Cr-Al resistance wire

Quartz Tube & Effective Heating    

Tube size: Ø200ר190×H425 mm

Max. loading 40Kg

Heating area Ø240×H245 mm

Vacuum Flange

Stainless steel vacuum flange with dual high-temperature silicone O-rings with water cooling jacket

One 1/4 gas inlet and one gas outlet with needle valves. 

One bored Al2O3 foam refractory block (190Dia x 50mm) is provided

K25 port is built-in for connecting to the vacuum pump

Mechanical Vacuum Gauge (included as standard accessory), which ranges from -0.1 to 0.15Mpa

Water Cooling

A water-cooling jacket has been built inside the flange to protect the vacuum sealing assembly from melting at over 200°C.  16L/min water flow required.

Temperature Controller

     

NRTL certified digital 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

THE Default DB9 PC communication port included for connecting to PC

Eurotherm Temperature Controller is available at the extra cost with +/-0.1°C accuracy

Options
   

Digital Pressure Gauge (optional) A gas-type independent(above 10mbar) digital vacuum gauge with a wide range between 3.8 x 10-5 to 1125 Torr.

You may choose a gas mixer to deliver multiple gasses with control over gas composition and flow rate The furnace can be modified into a faster heating and cooling furnace



Vacuum Pressure



Vacuum Level is dependent on the vacuum pump used, connected pipe, interior refractory block's materials, etc. By using KFD25, stainless steel pipe, STA's two-stage mechanical pump, and KF25 Ball valve, the furnace can achieve vacuum levels below:

10-2 torr via mechanical pump within 30 minutes without thermal Block

10-5  torr via turbo-pump within 30 minutes with the Quartz Thermal Block at 900C

Optional: 

The vacuum pump and pipe are not included,

For achieving a higher vacuum level, a Turbopump Station is necessary. 

Spare sealing O-ring is available at extra cost

 KF25 Right-Angle Valve for quick connection to KF25 Bellows

Options

You may choose a gas mixer to deliver multiple gasses with control over gas composition and flow rate

Overall Dimensions

500×530×880 mm

Net Weight

70 kg

Shipping Weight

200 lbs

Shipping Volume

45"(L) x 28"(W) x 35"(H) 


Warranty

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 gasses are not under the coverage of STA One Year Limited Warranty.

Compliance
  

CE Certified

Warning  


learn the installation of a gas regulator

Tube furnaces with quartz tubes are designed for use under vacuum and at low-pressure < 0.2 bars 

Attention: A two-stage pressure regulator must be installed on the gas cylinder to limit the pressure to below 3 PSI for safe operation.

A maximum temperature of 1000°C should be imposed on all quartz tube furnaces to avoid the quartz tubes undergoing deformations under vacuum.

The flow rate for gasses should be limited to < 200 SCCM for reducing thermal shocks



The HT-1200X-H8 is a high-performance horizontal chamber furnace featuring a quartz chamber with dimensions of Ø7.5" inner diameter (ID) and 13.4" length (L). Equipped with a hermetically sealed chamber, it enables precise heat treatment processes under controlled atmospheric environments or vacuum conditions, supporting a maximum operating temperature of up to 1100°C.

Its airtight design ensures excellent gas tightness, effectively preventing external air infiltration and maintaining stable internal conditions—ideal for applications requiring strict atmosphere control and contamination-free heat treatment. This furnace combines reliable temperature uniformity with versatile environmental adaptability, catering to diverse industrial and laboratory heating needs.

SPECIFICATIONS

Power

Voltage: Single-phase 208 - 240 VAC / 50/60Hz, (25 A breaker installed)

3 KW max. 

Note: Power cable included but without the plug. Please install a plug by your own or choose a plug according to your country or your lab requirements


Working Temperature

<1100°C under ambient pressure

<1000°C under vacuum

GE214 quartz tube is available for 1150oC working temperature at extra cost.

Heating Rate

<20°C/ min

Recommended: 10°C/ min

Heating Elements    

Ni-Cr-Al resistance wire

Quartz Tube & Effective Heating    

Tube size: Ø200ר190×H425 mm

Max. loading 40Kg

Heating area Ø240×H245 mm

Vacuum Flange

Stainless steel vacuum flange with dual high-temperature silicone O-rings with water cooling jacket

One 1/4 gas inlet and one gas outlet with needle valves. 

One bored Al2O3 foam refractory block (190Dia x 50mm) is provided

K25 port is built-in for connecting to the vacuum pump

Mechanical Vacuum Gauge (included as standard accessory), which ranges from -0.1 to 0.15Mpa

Water Cooling

A water-cooling jacket has been built inside the flange to protect the vacuum sealing assembly from melting at over 200°C.  16L/min water flow required.

Temperature Controller

     

NRTL certified digital 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

THE Default DB9 PC communication port included for connecting to PC

Eurotherm Temperature Controller is available at the extra cost with +/-0.1°C accuracy

Options
   

Digital Pressure Gauge (optional) A gas-type independent(above 10mbar) digital vacuum gauge with a wide range between 3.8 x 10-5 to 1125 Torr.

You may choose a gas mixer to deliver multiple gasses with control over gas composition and flow rate The furnace can be modified into a faster heating and cooling furnace



Vacuum Pressure



Vacuum Level is dependent on the vacuum pump used, connected pipe, interior refractory block's materials, etc. By using KFD25, stainless steel pipe, STA's two-stage mechanical pump, and KF25 Ball valve, the furnace can achieve vacuum levels below:

10-2 torr via mechanical pump within 30 minutes without thermal Block

10-5  torr via turbo-pump within 30 minutes with the Quartz Thermal Block at 900C

Optional: 

The vacuum pump and pipe are not included,

For achieving a higher vacuum level, a Turbopump Station is necessary. 

Spare sealing O-ring is available at extra cost

 KF25 Right-Angle Valve for quick connection to KF25 Bellows

Options

You may choose a gas mixer to deliver multiple gasses with control over gas composition and flow rate

Overall Dimensions

500×530×880 mm

Net Weight

70 kg

Shipping Weight

200 lbs

Shipping Volume

45"(L) x 28"(W) x 35"(H) 


Warranty

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 gasses are not under the coverage of STA One Year Limited Warranty.

Compliance
  

CE Certified

Warning  


learn the installation of a gas regulator

Tube furnaces with quartz tubes are designed for use under vacuum and at low-pressure < 0.2 bars 

Attention: A two-stage pressure regulator must be installed on the gas cylinder to limit the pressure to below 3 PSI for safe operation.

A maximum temperature of 1000°C should be imposed on all quartz tube furnaces to avoid the quartz tubes undergoing deformations under vacuum.

The flow rate for gasses should be limited to < 200 SCCM for reducing thermal shocks