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FRV/FRH Series (up to 1200°C)

FRV/FRH Series (up to 1200°C)

The FRV/FRH Series from Linn High Temp offers precision-engineered tube furnaces for demanding thermal processes up to 1200 °C, with a long-term operating temperature of 1150 °C. Available in both vertical (FRV) and horizontal (FRH) configurations, these furnaces are offered in closed or split-type designs—the split type allowing easy heating of flanged reactors and convenient access for dilatometers in tensile stress testing machines.

Insulated with vacuum-formed ceramic fibre half-shells, the furnace ensures excellent thermal containment. Heating is provided by FeCrAl wire heaters embedded in the insulation, with temperature monitored by a Type K (NiCr/Ni) thermocouple. The furnaces come in a range of sizes, including diameters from (25*)40–100 mm and heated lengths from 250–520 mm, as well as 3-zone models with diameters of 40–150 mm and heated lengths of 750–1000 mm.

Standard Options:

  • Split Type (FRHT)
  • Control: Different temperature controller, data recording, Endcaps, Insert tubes.

Main application:

  • Heating tensile strength testing machines
  • Reactor heater in chemistry
  • Continuous heating of wires and hoses
Type T max °C Zones Inner – φ mm Heated length mm kW
FRH-25/150/1100 1200 1 25 150 0,25
FRH-40/250/1100 1200 1 40 250 0,6
FRH-40/500/1100 1200 1 40 500 1,2
FRH-70/250/1100 1200 1 70 250 0,9
FRH-70/500/1100 1200 1 70 500 1,8
FRH-100/500/1100 1200 1 100 500 2,6
FRH-3-40/750/1100 1200 3 40 750 1,8
FRH-3-70/750/1100 1200 3 70 750 2,7
FRH-3-100/1000/1100 1200 3 100 1000 5,2
FRH-3-150/1000/1100 1200 3 150 1000 7,6