Overview
The Hot Disk® TPS 500 S rapidly and accurately measures the Thermal Conductivity, Thermal Diffusivity, Thermal Effusivity and Specific Heat Capacity of a wide range of materials and is therefore an excellent step-in thermal conductivity meter, and uniquely suitable for QC testing. The TPS 500 S adds powerful new features to the 500-series, in accommodating e.g. more measurement modules and sensor models. The TPS 500 S can handle bulk sample sizes down to a thickness of a few millimeters, has a Thermal Conductivity range of 0.03 to 200 W/m/K, and its temperature span is from -100°C to 300°C. It is partly based on ISO 22007-2* and ASTM E3088-25*, and is CE marked.
– With revised electronics.
For the small-scale lab
The compact Hot Disk TPS 500 S Thermal Constants Analyser rapidly and precisely measures the Thermal Conductivity, Thermal Diffusivity, Thermal Effusivity and Specific Heat Capacity of a wide range of materials and is therefore a powerful thermal conductivity meter for the small-scale laboratory or QC testing set-up.
The TPS 500 S instrument condenses our patented and powerful TPS technology (now ISO and ASTM standardised) with our elegant test and analysis software, arguably resulting in the simplest-to-use and versatile thermal conductivity meter on the market.
The TPS 500 S measures the Thermal Transport Properties of solids, powders, pastes, gels and liquids over a temperature range of -100°C to 300°C. The instrument encompasses similar accuracy and sample size flexibility as the benchmark TPS 2500 S and workhorse TPS 1500 (the latter two instruments are designed according to ISO 22007-2 and ASTM E3088-25).
TPS 500 S Specifications1
| Sample Types | Bulks, rods, slabs, wafers, sheets, fine granules, powders, pastes, creams, gels, liquids, and foams. |
|---|---|
| Evaluation | |
| Anisotropy | No. |
| One-Dimensional | Yes, axial estimations possible for a complex sample configuration. |
| Sample Dimensions | |
| Smallest | Bulk sample: 3 mm thick x 8 mm wide (circle or square). Rod sample: 10 mm long x 5 mm wide (circle or square). Slab sample: 100 μm thick x 12 mm wide (circle or square). |
| Largest | Bulk sample: unlimited. Rod sample: unlimited length x 14 mm wide (circle or square). Slab sample: 20 mm thick x unlimited wide (circle or square). |
| Sample Temperature Range | -100°C to 300°C. |
| Core Instrument | RT. |
| With Optional TCU | Cryostat: -100°C to RT. Low-to-High Temperature Chamber: -60°C to 300°C. Bath Circulator: -40°C to 200°C. Convection Oven: RT to 300°C. Muffle Furnace: RT to 300°C. Tubular Furnace: RT to 300°C. |
| Measurement Time2 | 2.5 to 2560 seconds (depending on sample material and sensor dimensions). |
| Measurement Range | |
| Thermal Conductivity | Bulk sample: 0.03 to 100 W/m/K. Rod sample: 1 to 200 W/m/K. Slab sample: 5 to 200 W/m/K. |
| Thermal Diffusivity | Bulk sample: 0.02 to 50 mm²/s. Rod sample: 2 to 100 mm²/s. Slab sample: 2 to 100 mm²/s. |
| Thermal Effusivity | 40 to 25000 W√s/m²/K. |
| Specific Heat Capacity | Up to 5 MJ/m³/K. |
| Measurement Accuracy | |
| Thermal Conductivity | Better than 5%. |
| Thermal Diffusivity | Better than 10%. |
| Measurement Reproducibility3 | |
| Thermal Conductivity | Typically better than 2%. |
| Thermal Diffusivity | Typically better than 10% (Kapton-insulated Hot Disk® sensor model 5501). |
| Measurement Repeatability4 | |
| Thermal Conductivity | Typically 0.34% (Stainless Steel bulk sample, Kapton-insulated Hot Disk® sensor model 5501, and 22°C sample temperature). |
| Thermal Diffusivity | Typically 1.4% (Stainless Steel bulk sample, Kapton-insulated Hot Disk® sensor model 5501, and 22°C sample temperature). |
| Measurement Sensitivity5 | |
| Temperature | Typically 620 μK (Stainless Steel sample, Kapton-insulated Hot Disk® sensor model 5501, and 22°C sample temperature). |
General
| Meets ISO Standard 22007-2 | Yes, with revised electronics. |
|---|---|
| Meets ASTM Standard E3088-25 | Yes, with revised electronics. |
| Measurement Modules | |
| Included | Isotropic, Single-Sided Testing, Slab, One-Dimensional, and Specific Heat Capacity (only measurements without a Hot Cell® sensor). |
| Optional | Automation. |
| Sensor Models | |
| Hot Disk® sensor – Kapton-insulated | Models 7577, 5465 and 5501. |
| Hot Disk® sensor – Teflon-insulated | Models 7577, 5465 and 5501. |
| Hot Strip® sensor – Kapton-insulated | All models. (Works only with the One-Dimensional Measurement Module.) |
| Instrument Environment | |
| Operating | 15°C to 30°C |
| Storage | -20°C to 45°C |
| Instrument Line Power | |
| Supply Voltage | 100 – 240 VAC, 50 – 60 Hz. |
| Power Consumption | 18 W typical, 190 W maximum. |
| Instrument Warm-Up | 2 hours to rated measurement performance. |
| Instrument Input and Output | |
| Rear Panel | USB type B connector (female) for connectivity. RS232 connector (male) for optional TCU. |
| Front Panel | LEMO 8 pin connector (female) for Hot Disk® or Hot Strip® sensor. LEMO 4 pin connector (female) for optional PT100 temperature sensor. |
| Instrument Dimensions | 190 mm high x 455 mm wide x 485 mm deep. |
| Instrument Weight | 11 kg. |
| Instrument CE Marking | Yes. |
- Hot Disk AB reserves the right to make changes without prior notice, whether due to misprints, improved hardware, or extended software capabilities.
- Time of transient temperature reading. An additional temperature settling time that depends on the sample material and TCU (if applied) is required to ensure isothermal condition before the reading.
- Comparing measurements performed by different instrument set-ups.
- Variation in consecutive measurements performed by a single instrument set-up. Note that this value depends on sample material, sensor model, and sample temperature.
- Standard deviation in fitting ∆Τ(τ)-function to the transient temperature reading. Note that this value depends on sample material, sensor model, sample temperature, and can vary considerably.
Included with the TPS 500 S instrument
- 5 x Measurement Modules: Isotropic, Single-Sided Testing, Slab, One-Dimensional, and Specific Heat Capacity (Hot Cell® sensor optional).
- 3 x Kapton-insulated Hot Disk® sensors: Models 7577, 5465 and 5501, with cable.
- Hot Disk® Desktop App software (latest version)
- 1 x Stainless Steel verification bulk sample.
- 1 x Single-sided background insulation (single-sided testing).
- 1 x Room temperature sample holder (protective hood optional).
- Instructions manual.
- Instrument test protocol.
- Power supply cord and USB cable.

