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THB – Transient Hot Bridge

Transient Hot Bridge – Thermal Conductivity Meter

Description

On point

The Linseis Transient Hot Bridge – Thermal Conductivity Meter enables thermal conductivity, thermal diffusivity and specific heat measurements on various sample geometries and materials. This Linseis measuring instrument provides the three material properties simultaneously after just a few minutes time regardless of whether you have used the patented sensor in a solid matter (incl. bulk material, gels, pastes) or in a liquid. The preparation of solid samples is pretty simple: One pla-ne surface of two sample halves is sufficient for the sensor. Reference or calibration measurements are a thing of the past. As a matter of course, the THB measures absolute values, with an uncertainty which is not behind that of conventional plate or our laser flash devices.

Different sensors, easily to be exchanged, are available for laboratory and field use. The THB measures fully automatically. Its software control optimizes the measurement process independently, aiming at a short duration and a minimum uncertainty.

Advantages:

  • Highest Accuracy
  • Absolute technique (no calibration or reference sample required)
  • Fast measurement cycles
  • Non destructive measurement
  • Broad measuring range
  • Broad temperature range
  • Easy handling (no trained staff required)
  • Simple sample preparation
  • Applicable for solids, liquids, powders and pastes
  • No influence of sensor contact pressure on measurement
  • Easy measurement of porous and transparent samples

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Linseis Sales

phone: +49 (9287) 880-0
mail: info@linseis.de

Specifications

Black and white
Model THB 1
Measuring ranges
Thermal conductivity: 0,01 up to 1 W/(mK)
Thermal diffusivity: 0.05 up to 10 mm2/s
Specific thermal capacity: 100 to 5000 kJ/(m3 K)
Measurement uncertainties:
Thermal Conductivity: better than 2 %
Thermal Diffusivity: better than 5 %
Heat Capacity: better than 5 %
Duration of the measurement:
Solids: typically 1 to 10 min
Liquids: typically 1 to 120 s
Service temperature
Sensor: –150 °C to 200 °C
Sensor type: Kapton insulated sensor
Sample size
Smallest sample: 40 x 20 x 3 mm
Maximum Sample size: unlimited
Sample consistence: solid, liquid, gel, powder, granulate
Sample temperature*: -150 up to 200 °C

* Optional climate chamber

Model THB 100/500/1000
Measuring ranges
Thermal conductivity: 0.01 up to 100/500/1000 (1800) W/(mK)
Thermal diffusivity: 0.05 up to 10 mm2/s
Specific thermal capacity: 100 to 5000 kJ/(m3 K)
Measurement uncertainties:
Thermal Conductivity: better than 2 %
Thermal Diffusivity: better than 5 %
Heat Capacity: better than 5 %
Duration of the measurement:
Solids: typically 1 to 10 min
Liquids: typically 1 to 120 s
Service temperature:
Sensor: –150 °C to 200 °C or -150 to 700°C 
Sensor type: Kapton or Ceramic insulated sensor
Sample size
Smallest sample: 3 x 3 x 3 mm
Maximum Sample size: unlimited
Sample consistence: solid, liquid, gel, powder, granulate
Sample temperature*: -150 up to 700 °C

* Optional climate chamber

Accessories

THB_Transient Hot Bridge Sensoren

Different Accessories are available for the Linseis THB:

  • Huge amount of Sensor types for many different applications. For example:
    • Small samples, large samples
    • Liquids
    • Pastes
    • Gels
    • Solids
  • Different climate chambers for temperature range from –50 °C to 200 °C or -100 to 600°C

Software

All thermo analytical devices of LINSEIS are PC controlled and the individual software modules exclusively run under Microsoft Windows operating systems. The complete software consists of 3 modules: temperature control, data acquisition and data evaluation. The Linseis 32 – bit software encounters all essential features for measurement preparation, execution and evaluation with a THB run, just like with other thermo analytical experiments. Due to our specialists and application experts LINSEIS was able to develop this easy understandable and highly practical software.

Linseis LFA 500 Software

General Features

  • Repetition measurements with minimum parameter input
  • Evaluation of current measurement
  • Curve comparison up to 32 curves
  • Curve subtraction
  • Zoom function
  • Multiple smoothing functions
  • Storage and export of evaluations
  • Program capable of text editing
  • Export and import of data ASCII
  • Data export to MS Excel
  • Signal-steered measuring procedures
  • Zoom in function
  • Undo function

Applications

Anwendungsbeispiel: Ceramic filled Polymers

In the following diagram you can see a typical measurment of a ceramic filled polymer. All three parameters, thermal Diffusivity, thermal conductivity and specific heat have been calculated and reported simultaneously. In addition to the measurement values, the Software calculates and displays the associated measurement uncertainties in accordance with the international ISO standard.

THB Applikation Mit Keramik gefüllte Polymere

Video

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Overview

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Linseis Produktbroschüre THB 100

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Linseis Produktbroschüre THB 500

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Linseis Produktbroschüre THB 1000

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Linseis Produktbroschüre Thermal Conductivity

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