Heating tube furnace RHT series

laboratoryvacuummulti-gas

Overview
The high-temperature tube furnaces are available in either horizontal (type RHTH) or vertical (type RHTV) designs. High-quality insulation materials made of vacuum-formed fiber plates enable energy-saving operation due to low heat storage and heat conductivity. By using different gas supply systems, operations can be performed under non-flammable or flammable protective or reactive gases or under vacuum.

Standard Equipment

• Tmax 1600 °C, 1700 °C, or 1800 °C
• Single-zoned design
• Dual shell ventilated housing made of textured stainless steel sheets for low surface temperature and high stability
• Exclusive use of insulation materials without categorization according to EC Regulation No. 1272/2008 (CLP) — no refractory ceramic fiber (RCF) used
• Insulation with vacuum-formed ceramic fiber plates
• Tube furnaces RHTV with frame for vertical operation
• Type B thermocouple
• Solid state relays for low-noise operation
• Ceramic working tube C 799 including two fiber plugs for operation under air
• Hanging and easy-to-change MoSi2 heating elements
• Power unit with low-voltage transformer and thyristor
• Over-temperature limiter with adjustable cutout temperature to protect furnace and load
• Switchgear and control unit separate from furnace in a separate floor-standing cabinet
• Defined application within the constraints of the operating instructions
• NTLog Basic for controller: recording of process data with USB flash drive
• Controller with touch operation P570 (50 programs, each with 40 segments)

Additional Equipment

• Charge control with temperature measurement in the working tube
• Three-zone control for optimization of temperature uniformity (available for horizontal tube furnaces RHTH)
• Gas supply system 2 for non-flammable process gas
• Gas supply system 4 for hydrogen operation
• Vacuum package to evacuate the working tube
• Process control and documentation via VCD software package for monitoring, documentation and control

Technical specifications (tables)
Horizontal design (selected models)
Header: Model | Tmax (°C) | Outer dimensions W x D x H (mm) | Max. outer tube Ø (mm) | Heated length (mm) | Length constant temperature ±5 K (single zoned / three zoned) | Tube length (mm) | Connected load (kW) | Electrical connection | Weight (kg)
RHTH 50/150/.. | 1600 or | 530 x 480 x 640 | 50 | 150 | 50 / 70 | 380 | 5.8 | 3-phase 4 | 70
RHTH 80/300/.. | 1700 or | 680 x 550 x 640 | 80 | 300 | 100 / 150 | 530 | 9.4 | 3-phase 4 | 90
RHTH 120/600/.. | 1800 | 980 x 550 x 640 | 120 | 600 | 200 / 300 | 830 | 14.8 | 3-phase 4 | 110
Notes: Values outside the tube; difference to temperature inside the tube up to +50 K. Without tube. External dimensions vary with additional equipment. Heating only between two phases. Connected load refers to standard furnace and may increase with additional equipment.

Vertical design (selected models)
Header: Model | Tmax (°C) | Outer dimensions W x D x H (mm) | Max. outer tube Ø (mm) | Heated length (mm) | Length constant temperature (mm) | Tube length (mm) | Tube length (mm) | Connected load (kW) | Electrical connection | Weight (kg)
RHTV 50/150/.. | 1600 or | 610 x 700 x 1130 | 50 | 150 | 30 | 380 | 5.8 | 3-phase 4 | 70
RHTV 80/300/.. | 1700 or | 680 x 700 x 1280 | 80 | 300 | 80 | 530 | 10.7 | 3-phase 4 | 90
RHTV 120/600/.. | 1800 | 680 x 700 x 1580 | 120 | 600 | 170 | 830 | 19.4 | 3-phase 4 | 110
Notes: Values outside the tube; difference to temperature inside the tube up to +50 K. Without tube. External dimensions vary with additional equipment. For furnaces with multi-range voltages, connected load applies to highest permissible voltage.

Caractéristiques / spécifications techniques

• Designs: horizontal (RHTH) and vertical (RHTV)
• Maximum temperature ratings: up to 1600 °C, 1700 °C or 1800 °C depending on model
• Insulation: vacuum-formed ceramic fiber plates; no RCF materials used
• Heating elements: MoSi2 (hanging, replaceable)
• Control: Touch controller (P570), NTLog Basic data recording via USB
• Gas/Vacuum capability: configurable gas supply systems for non-flammable or hydrogen operation; vacuum package option
• Options for improved uniformity: three-zone control (horizontal furnaces)
• Safety: over-temperature limiter, separate switchgear and floor-standing control cabinet
• Available accessories: charge control, process control/documentation software (VCD), various gas supply systems