THASYS thermal conductivity measurement system

THASYS thermal conductivity measurement system
THASYS Thin Heater Apparatus for thermal conductivity measurement
THASYS measurement of thermal resistance of plastics, composites
THASYS works according to the ASTM 1114-98 standard
Thin Heater Apparatus for thermal conductivity measurement

THASYS offers measurement of the thermal conductivity or total thermal resistance of plastics, composites and electrical insulation / interface materials. THASYS works according to the ASTM 1114-98 standard; providing an accurate, fast, uncomplicated and absolute measurement. It consists of a Thin Heater Apparatus (THA01) and a Measurement and Control Unit (MCU). Employing a specially designed high accuracy thermopile sensor, THA01 can handle thin sample materials. (typically 0.1 to 6 mm, but sometimes down to 0.01mm). The method is considered superior to procedures according to ASTM D5470. Using a climate chamber a large temperature range can be covered, performing measurements at regular intervals. THASYS is fully PC controlled. For use with high thermal conductivity thin foil materials a different model, type THISYS, is available.

Specifications
Measurand
  • thermal conductivity
  • thermal resistivity
Would you like a personalised quote?

or contact us: info@hukseflux.com

Specifications

Measurand
  • thermal conductivity
  • thermal resistivity
THA01 specifications
  • :
Test method
  • ASTM C 1114-98
Sensitivity traceability (ΔT)
  • NSI MC96.1-1982
Temperature range
  • -30 to +120 °C
Accuracy (λ) (examples)
  • all @ 20 °C
@ H/λ> 15 10⁻³ m²K/W
  • +/- 3% (2 samples)
@ H/λ> 5 10⁻³ m²K/W
  • +/- 6% (2 samples)
@ H/λ> 5 10⁻³ m²K/W
  • +/- 3% (4 samples)
@ H/λ> 2.5 10⁻³ m²K/W
  • +/- 3% (6 samples)
@ H/λ> 2.5 10⁻³ m²K/W
  • +/- 3% (6 samples)
@ H/λ> 0.5 10⁻³ m²K/W
  • +/- 14% (6 samples)
Repeatability (λ)
  • +/- 1% @ 20 °C
Total measurement time
  • 3000 s (typical)
Sample thickness
  • H = 0.1 - 6 mm (see accuracy for stacking)
Sample surface A: preferred
  • 70 x 110 mm, always > 50 x 50 mm
Traceability
  • NPL National Physical Laboratory UK
Pressure cell (optional)
  • 200 N or max 80.0 kN/m²
MCU specifications
  • :
Differential temperature readout
  • 0.5 μV @ 0 - 30 °C
Pt100 readout
  • +/- 0.2 °C @ 20 °C
Voltage input/output
  • 220-110 VAC / 15 VDC
Further functionality
  • Relay function, heater power measurement, temporary data storage
Communication
  • RS232

Description

THASYS thermal conductivity measurement system

ASTM C 1114-98 "Standard Test Method" for "Thin Heater Apparatus" (THA)

ASTM C 1114-98 "Standard Test Method" for "Thin Heater Apparatus" (THA) is a relatively new standard (1998) that offers the possibility to perform fast measurements with high accuracy, across a fairly large temperature range. The THA principle relies on the fact that a thin heater has negligible lateral heat flow. With a combination of a very thin heater, two relatively thin samples of similar thickness and two heat sinks it is possible to generate a homogeneous thermal field with known heat flux through the samples.

THA01 design

THA01 design

The technological novelties are a thin thermocouple thermopile (proprietary Hukseflux design) performing an accurate and ultra-sensitive differential ΔT measurement, and the fact that the measurement is performed in a bath of glycerol. The latter reduces contact resistance and facilitates the THA operation.

The MCU performs the functions of measurement and control

MCU01 design

The MCU performs the functions of measurement and control as well as data storage. It is PC operated. Software in a Windows environment is part of the delivery. The parameters cycle time, sample thickness and heater area are entered and the experiment is started from the screen.

Suggested use

  • plastics and composites thermal analysis
  • electrical interface materials
THASYS thermal conductivity measurement system
THASYS thermal conductivity measurement system
  • providing an accurate, fast, uncomplicated and absolute measurement
Would you like a personalised quote?

or contact us: info@hukseflux.com