Platzhalterbild Rendering folgt Guarded Heat Flow Meter – TCT 716 Lambda Method, Technique, Applications Analyzing & Testing

Realizing Precise Determination of Thermal Resistance and Thermal Conductivity Between Classical Heat Flow Meters and Laser Flash Analyzers The TCT 716 Lambda offers the capability of analyzing specimens with optimum dimensions: smaller than conventional HFM and larger than LFA. This enables investigations on homogeneous and inhomogeneous materials with thermal conductivity values ranging from low to medium, for example polymers, composites, glass, ceramics, some metals, etc.

TWO INDEPENDENT TEST STACKSHandling The robust design of the TCT 716 Lambda thermal conductivity tester offers easy, uncomplicated handling of the software and hardware. The guarded heat flow meter (GHFM) is fully software-controlled, including mean temperature and applied force. The software also allows for an unlimited number of steps in test cycles for best performance. This GHFM has a left and right test stack; which enables tests on a single specimen or simultaneous tests on two specimens. Each stack is independent of the other in terms of specimen thickness. Both stacks can be operated...

Realizing Precise Determination of Thermal Resistance and Thermal Conductivity Knowledge about the thermal conductivity and thermal resistance is important in the case of many metals, polymers, and composites because it helps engineers and scientists design and develop materials and products that can withstand high temperatures and thermal stress. Thermal conductivity (λ) is the ability of a material to conduct heat. The thermal transmittance, also known as U-value, is the reciprocal of the total thermal resistance (R, see formulas below). The lower the U-value, the better the insulating ability....

Why a Guard? With a Guarded Heat Flow Meter, thermal conductivity and thermal resistance can be precisely determined. The heat source and a temperature sensor are surrounded by an active guard (furnace). This prevents lateral heat losses to the environment and increases measurement accuracy. It is important that thermal contact between the instrument plates and the test sample be reproducible. Thus, the TCT 716 Lambda is equipped with reproducible load control. The operator measures the thickness of the test specimen(s), and places them between two heated plates controlled at different temperatures....

Clamping Control Instrument Calibration All conditions of calibration, such as management of reference materials, For rigid materials, the plates temperature steps and pressure are fully automated with the software. automatically clamp together for The instrument is calibrated with materials of known thermal resistance. optimum sample contact. A relationship is established between the known thermal resistance of the calibration material and the related temperature difference and heat flux. The user can select from among the following reference materials with predefined thermal conductivity values:...

TCT 716 Lambda General Standards External PC, minimum i5 or equivalent, 500 GB, 2x USB 3.0 (not included) Automated instrument calibration Testing chamber Yes; reference materials: fused silica; pyroceram and stainless steel Motorized door opening/closing mechanism, interlocked Measurement data Thermal resistance range Thermal conductivity range Thermal conductivity accuracy Thermal conductivity repeatability Measurement times for different material types 0.001 to 0.030 m2·K/W 0.1 to approx. 30 W/(m·K) (using proper sample thicknesses) ±3% deviation from literature value (depending on the accuracy...

The owner-managed NETZSCH Group is a leading global technology company specializing in mechanical, plant and instrument engineering. Under the management of Erich NETZSCH B.V. & Co. Holding KG, the company consists of the three business units Analyzing & Testing, Grinding & Dispersing and Pumps & Systems, which are geared towards specific industries and products. A worldwide sales and service network has guaranteed customer proximity and competent service since 1873. NETZSCH-Gerätebau GmbH Wittelsbacherstraße 42 95100 Selb, Germany Tel.: +49 9287 881-0 Fax: +49 9287 881-505 [email protected] https://analyzing-testing.netzsch.com...