High-Temperature Tube Furnaces for Horizontal or Vertical Operation up to 1800 °C

The Nabertherm 1800C Tube Furnace (RHTH/RHTV series) is a “Made in Germany” solution for advanced, high-temperature laboratory processes. These furnaces are available in a horizontal (RHTH) or vertical (RHTV) design to perfectly fit your application. They are the ideal choice for heat treatments in a non-flammable, flammable (Hydrogen), or vacuum atmosphere.

These models feature high-quality insulation made of vacuum-formed fiber plates, which provides low heat storage for energy-saving operation. The high-performance Molybdenum Disilicide (MoSi2) heating elements are hung vertically, are easy to change, and provide excellent temperature uniformity. The system comes complete with a separate floor-standing cabinet for the switchgear and the advanced P570 controller.

Standard Equipment:

• “Made in Germany” Quality: Engineered for advanced high-temperature processes.
• Max Temperature: Available in 1600 °C, 1700 °C, or 1800 °C versions.
• Versatile Design: Available as a horizontal (RHTH) or vertical (RHTV) model.
• Premium Heating Elements: High-performance, easy-to-change MoSi2 heating elements.
• Advanced Insulation: High-quality, vacuum-formed ceramic fiber plates (RCF-free and non-carcinogenic).
• Standard Working Tube: Includes a C 799 ceramic working tube and two fiber plugs for operation in air.
• Precision Control: High-quality Type B thermocouple.
• Floor-Standing Cabinet: Separate switchgear cabinet with controller and low-voltage transformer.
• Advanced Controller: Comes standard with the powerful **P570 controller** (50 programs, 40 segments).
• Standard Safety Feature: Includes an over-temperature limiter with an adjustable cutout temperature to protect the furnace and load.
• Data Recording: Includes NTLog Basic for recording process data via a USB flash drive.

The Nabertherm RHTH/RHTV platform can be upgraded to a highly sophisticated system for nearly any advanced process, including flammable gas or vacuum applications.

Available Options & Accessories:

• Three-Zone Control: Available for horizontal (RHTH) models to significantly optimize temperature uniformity.
• Charge Control: Allows for temperature measurement directly within the working tube via a separate thermocouple.
• Gas Supply Systems: A wide range of gas supply systems are available, including:
  • Gas System 2: For non-flammable process gases.
  • Gas System 4: For advanced applications using **Hydrogen (H2)** or other flammable gases.
• Vacuum Package: A powerful vacuum package, including a pump and measurement, for evacuating the working tube.
• Process Control Software: Integrate your furnace with the powerful VCD software package for comprehensive, PC-based process control, monitoring, and documentation.

Related Products:

These furnaces are part of our complete range of Nabertherm laboratory products. For lower temperature applications, see our 1300 °C RS Split-Type Furnaces.

The Nabertherm RHTV (vertical) series is available in three sizes, with a choice of 1600 °C, 1700 °C, or 1800 °C for each model. The specifications below are for the vertical (RHTV) models. Horizontal (RHTH) models are also available; please contact us for specifications.

Note: Temperature values are measured outside the tube.