Mica-insulated

Our Mica-insulated Hot Disk® sensors are mechanically firm and designed for measurements at elevated temperatures, typically in the 300°C to 1000°C range. Coming in eight models of different radii to date, they are commonly more perishable at higher temperatures, while easily replaced and available in bulk.

Tackling measurements up to 1000°C

Our current portfolio of Mica-insulated Hot Disk® sensors for Isotropic, Anisotropic, Slab and One-dimensional measurements, with an operating temperature from 300°C up to 800°C (or 1000°C in special cases), is outlined in the following table, followed by images and detailed dimensions:

Only for one-dimensional measurements.

For applications with thermal conductivity larger than 5 W/(mK), the Cp-value must be known beforehand.

Intended for large and very high-conducting samples.
Sensor model:	Radius (mm):
7577 *	2.0
7577Q ?*?	2.0
5465 **	3.2
5082	6.6
4921	9.7
4922	14.6
4922L ***	14.6 with extended leads
5599	29.5
5599L ***	29.5 with extended leads

The Mica-insulated Hot Disk® sensors are delivered without cables. They are instead mounted in special sensor holders, e.g. our sensor interface for high temperatures accessories, to which electrical leads with insulating ceramic rings are mechanically attached.

Mica-insulated Hot Disk® Sensors – Standard

Mica-insulated Hot Disk® Sensors – Extended length

Mica-insulated Hot Disk® Sensors – Extended cladding

Works with Hot Disk® Instruments

Other Hot Disk® Sensors

Hot Disk® Sensor
Kapton-insulated

Precision measurements up to 400°C

Our Kapton-insulated sensors are the most versatile in the Hot Disk® sensor portfolio, employed at temperatures from -253°C (20 K) to 400°C. They are mechanically highly flexible, and frequently attain a lifetime of several years when employed with care. The Kapton-insulated Hot Disk® sensors are available in seventeen models of different radii to date, catering to a wide range of sample sizes and topical applications.

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Hot Disk® Sensor
Teflon-insulated

Coping with nasty samples and environments up to 250°C

Our Teflon-insulated Hot Disk® sensors are mechanically flexible, geared toward liquid- or high-viscosity immersion and temperatures up to 250°C. They are designed for use in extreme conditions, such as acidic or corrosive environments, or with sticky and reactive samples. The Teflon-insulated Hot Disk® sensors are today available in six smaller-radii models.

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Hot Strip® Sensors

Hot Strip® Sensor
Kapton-insulated

Handling odd-shaped and limited-sized samples up to 400°C

While our Hot Disk® sensors can accommodate most measurement scenarios, our Hot Strip® sensors can importantly tackle odd-shaped and/or limited-sized samples, e.g. rectangular slabs and rods with rectangular or square cross-sections. Regarding anisotropic samples, Hot Strip® sensors can be used to analyse the 3D Thermal Conductivity and Thermal Diffusivity tensors of biaxial materials, whereas the Hot Disk® sensors are limited to analyse the 2D Thermal Conductivity and Thermal Diffusivity tensors of uniaxial materials.

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Tackling measurements up to 1000°C

Mica-insulated Hot Disk® Sensors – Standard

Model Dimensions

Model 7577

Model 5465

Model 5082

Model 4921

Model 4922

Model 5599

Model Dimensions

Model 7577

Model 5465

Model 5082

Model 4921

Model 4922

Model 5599

Mica-insulated Hot Disk® Sensors – Extended length

Model Dimensions

Model 4922L

Model 5599L

Model Dimensions

Model 4922L

Model 5599L

Mica-insulated Hot Disk® Sensors – Extended cladding

Model Dimensions

Model 7577Q

Model Dimensions