Thermal Conductivity

 GHP 900 – Thermal Conductivity Tester


Measuring devices of the GHP 900 series are robust cabinet devices which are especially suited for testing thicker specimens. Thanks to the integrated single board computer (SBC) with Windows operating system, the Lambda software and the high-resolution color touch display, the devices are very user-friendly.

Numerous interfaces such as RS232, USB and Gigabit Ethernet enable connectivity to peripheral devices and allow for fast and convenient data transfer.

Connection to an external PC allows for the extensive evaluation of test results and the printing of test reports.

 Features at a Glance


  • Large thermal conductivity measuring range up to 2.0 W/(m·K)
  • Fully insulated guarded test chamber, designed for specimens with a thickness up to 260 mm
  • Available as 1- or 2-specimen measurement method according to ISO 8302 (chapter 1.6.2)
  • Easy specimen change from any side ∙ Integrated digital measurement of specimen thickness and sample pressure
  • Motorized lifting of the upper plate
  • Network capability
  • Control, data acquisition and data processing via external PC and Lambda software
  • Variable dimensions of heating plates; heating area from 200 mm x 200 mm up to 500 mm x 500 mm
  • Square-shaped or rectangular areas for a variety of specimen dimensions
  • Cold plates and guarded chamber are controlled by chiller systems

 Key Technical Data 

  • Measuring range: 0.005 to 2.0 W/(m·K), depending on material and thickness
  • Specimen size (L x W): 900 mm x 900 mm, variable, according to the dimension of the hot plate: 200 mm x 200 mm up to 500 mm x 500 mm
    Specimen thickness (H): 1x 15 mm to 200 mm (1-specimen measurement method) 2x 15 mm to 100 mm (2-specimen measurement method)
  • Temperature range: Cooling plate: -15°C to 60°C.  Heating plate: -5°C to 70°C
  • Interface: 1x RS 232,1x Gigabit Ethernet
  • Dimensions (H x W x D): 146 cm x 126 cm x 233 cm (opened hood)
  • Power supply: 110 V to 230 V, 50/60 Hz
  • Weight: 278kg