HTO-20

High-temperature furnace HTO-20

for material testing in air and a heating zone length of 36 cm

General Features

The HTO-20 high-temperature furnace is characterized by excellent temperature distribution, ensured by its 3-zone design. Each zone can be controlled independently, enabling precise temperature control, especially when an appropriate temperature controller is used.

The furnace is made more energy-efficient through the use of a lightweight, thermally insulating and asbestos-free aluminum silicate wool.

The housing of the furnace is made of stainless steel, which increases the longevity of the appliance.


In addition, the furnaces are already equipped to accommodate a length change sensor (HT extensometers). This makes it easy to integrate measuring devices for monitoring material changes.

Technical information
Mass and weight
Heated zone (length)3 zone:
Length per zone:		Per zone approx. 120 mm (vertical)
Can be controlled independently
Furnace external dimensionsHeight:
Width:
Depth:		Approx. 560 mm
Approx. 455 mm
Approx. 400 mm
Heating room internal dimensionsØ:
Height:		Approx. 120 mm (max. usable diameter)
Approx. 360 mm
Feed-through openingØ top and bottomApprox. 50 mm
WeightApprox. 65 kg
Thermal values
Temperature range(Indoor) room temperature up to 1150°C
Permissible heating element surface temperatureMax. 1600°C
Heating rate
< 1000°C max 20 K/min.
> 1000°C max. 10 K/min
Materials
Heating conductor• Superthal modules with molybdenum disilicide 12-leg elements suspended and mounted in free-radiating manner
Thermocouple• Pt10%-PtRh, type S guided in Al2O3 sleeves
Thermal insulation• Polycrystalline AI2O3- Wool
Housing• Stainless steel
• Double-walled design
• Reduction of the external wall temperature through water cooling
• Hinged, with side opening for the HT extensometer
• With quick-release fasteners for opening and closing the furnace
Cooling water consumption• Approx. 1-4 liters/min.
Electrics
Power/ConnectionApprox. 1,35 KW per zone / 3 x (40V), 50 Hz
Safety switch for OFF when opening the furnace

Features

  • The double-walled and water-cooled construction reduces the outer wall temperature.
  • The MSRA regulator uses transformers to provide the required high current and reduce the voltage. Thanks to the lower voltage, the oven's lifespan is extended.
  • Folding furnace. Fast and easy sample loading of samples possible.
  • Durable embedded horizontal heating elements.
  • Furnace bore optimized for a wide range of adapters and test fixtures without causing large heat losses.
  • Lightweight and asbestos-free insulation material to minimize power consumption.
  • Stainless steel housing.
  • All electrical connections are made to the MSRA controller.
  • Front cutout allows access to high-temperature extensometers.
  • Uniform temperature gradient thanks to 3 independent heating zones.
  • Five feed-throughs for thermocouples, 3 of which are in the middle of each heating zone.
  • Movable thermocouple arrangements for the temperature are optionally available.
  • Adjustable stainless steel latches for easy locking of the furnace holder during the test.
  • Upper and lower end plates with tie rod cutouts are manufactured to fit the test device.
  • OFF safety switch when opening the furnace.

Application

  • Heating zone length of 360 mm.
  • Suitable for investigations on metallic and ceramic materials, when heated in air up to max. 1550°C
  • For tensile specimens B from M6 to M20 (according to DIN 50125)
  • Load rods available

Options (accessories)

  • Cooling water flow monitoring.
  • Furnace overtemperature alarm (independent temperature detection).
  • Inert gas supply.

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