X

HFM – Heat Flow Meter

Thermal conductivity meter for testing insulation materials

Description

On point

The LINSEIS Heat Flow Meter provides a rapid and easy to use instrument to determine the thermal conductivity properties of low thermal conductive insulation materials as well as all other materials with a high level of accuracy. The thermal conductivity instrument design is based on ASTM C518, JIS A1412, ISO 8301 and DIN 12667. The principle of measurement is to position a sample between a hot and a cold plate and to measure the heat flow.

The LINSEIS Heat Flow Meter is a robust and reliable instrument. Its unique design enables highly accurate measurements within minutes. The system provides an excellent long term stability enabling precise long term aging studies.

Fast measurement cycles as little as 15 minutes can be achieved, resulting in a high sampling rate. To enable these fast and precise sampling intervals, the heat flow meter uses a dual sensor arrangement. An integrated length measurement provides immediate sample thickness data.

Heat flow meter features:

  • Highest precision and accuracy
  • Very robust design
  • Very easy handling
  • Fast sampling (approx. 15 min for QC)
  • Automated operation
  • Peltier modules for temperature regulation
  • Measurement range extension up to 2.5 W/mK
  • Up to 99 temperature points
  • No PC required

 

You are interested in a instrument?

You need more information?

Contact us today!

 

Send us your request >>

Specifications

All facts on your hand
Model HFM 200
Temperature Range (Plates): 0 to 90°C
-20 up to 90°C
-40 up to 90°C
Cooling system: External chiller or active
refrigerating chiller
Temperature control (Plate): Peltier
Measurement Data points: 99
Sample size: 205x205x105mm3
Th. resistance measuring range: 0.2 to 8.0 m2K/W
with Extension*
0.036 to 8.0 m2K/W
Th. conductivity measuring range: 0.001 to 0.5 W/m∙K
with Extension*
0.001 to 2.5 W/m∙K
Reproducability: 0.25%
Accuracy: +/- 1 up to 3%
Variable contact pressure: 0 – 25 kPa
Model HFM 300
Temperature Range (Plates): 0 to 90°C
-20 up to 90°C
-35 up to 90°C
Cooling system: External chiller or active
refrigerating chiller
Temperature control (Plate): Peltier
Measurement Data points: 99
Sample size: 305x305x105mm3
Th. resistance measuring range: 0.2 to 8.0 m2K/W
with Extension*
0.036 to 8.0 m2K/W
Th. conductivity measuring range: 0.001 to 0.5 W/m∙K
with Extension*
0.001 to 2.5 W/m∙K
Reproducability: 0.25%
Accuracy: +/- 1 up to 3%
Variable contact pressure: 0 – 25 kPa
Model HFM 600
Temperature Range (Plates): -20 to 70°C


Cooling system: External chiller or active
refrigerating chiller
Temperature control (Plate): Peltier
Measurement Data points: 99
Sample size: 600x600x200mm3
Th. resistance measuring range: 0.2 to 8.0 m2K/W
with Extension*
0.036 to 8.0 m2K/W
Th. conductivity measuring range: 0.001 to 0.5 W/m∙K
with Extension*
0.001 to 2.5 W/m∙K
Reproducability: 0.25%
Accuracy: +/- 1 up to 3%
Variable contact pressure: 0 – 25 kPa

Software

The Linseis Heat Flow Meter can be operated through the touch screen front panel. Optional software free of charge is available. This state of the powerful software package enables convenient temperature programming, data storage and instrument control.

Linseis LFA 500 Software

Key features:

  • Easy measurement parameter input
  • Measurement data storage and export
  • Report printing, layout can be customized
  • Multi language software versions
  • Instrument monitoring (plate temperature, thermal conductivity results and output signal monitoring)
  • Software help functions
  • Optional user login and data monitoring

Applications

Application example: Elastomer foam

The present measurement clearly demonstrates the outstanding reproducibility of the LINSEIS HFM series. A reproducibility of 0.5% was achieved. The graph displays four measurements of an elastomer foam in the temperature range from 15 to 40°C. The sample was removed and replaced into the instrument after each measurement.

HFM Applikation Elastometerschaum

Repeatability:

15 Measurement of the IRMM-440 certified reference material (Resin bonded glass fiberboard) with a thermal conductivity of 0.03274+-0.00015 at 30°C and 0.03102+-0.00012 at 15°C. The X-Axis shows the temperature gradient.

Precision:

The graph shows two measurements of the same glass wool specimen at several temperatures. The black line shows the thermal conductivity according the manufacturer information. The X-Axis shows the temperature gradient.

HFM Applikation Glaswolle

Downloads

Overview

Linseis Produktbroschüre HFM 2019

HFM Product brochure (PDF)

Download