LiLZT L33 – LZT Meter
LZT L33 is the world’s first commercially available system for direct determination of the thermoelectric Figure of Merit (ZT) using combined Laser Flash and LSR measurement technology in a single instrument.
LZT L33 – LZT Meter
Combined LSR/LFA
The Linseis LZT-Meter (LZT L33) is the world’s first commercially available instrument that enables direct determination of the thermoelectric Figure of Merit (ZT) by combining Laser Flash (LFA L52) and LSR measurement technology within a single instrument.
The system allows independent determination of thermal conductivity using the flash method, together with measurement of electrical resistance and the Seebeck coefficient based on the proven LSR platform. This integrated approach provides a complete, precise, and reliable thermoelectric characterization workflow within one measurement system.
The advantage is obvious: the compact and integrated design reduces laboratory space requirements and eliminates the need for duplicate furnaces, electronics, and additional equipment. The LZT L33 is therefore the ideal, cost-efficient, and high-quality solution for research and development applications focused on measurement quality rather than maximum sample throughput. For complete ZT characterization, only a single disk-shaped sample geometry is required.
Advantages of the combined measurement:
☑️ Measurement of a single sample
● No geometry error
● Same stoichiometry
● No problems with further sample preparation
☑️ Identical environmental conditions
● Temperature
● Humidity
● The atmosphere
Furthermore, all well known advantages of the LSR-Platform
● Resistivity measurements of high-resistance samples possible
● Optional Harman measurement
● Camera option
☑️ The unit is also available with three different furnaces:
● An infrared furnace (for precise temperature control at very high and low heating rates)
● A low-temperature furnace for measurements down to -100°C
● A high-temperature furnace for measurements up to 1100°C
The supplied software package offers the possibility to evaluate all measurement data in a user-friendly way and to use the optionally integrated Harman ZT model.
Specifications
☑️ Cost-efficient and space-saving system design
☑️ Reliable measurement of even the most demanding samples thanks to the high-ohm option and flexible thermocouple positioning
☑️ Measurements from –100°C to 1100°C using interchangeable furnaces
☑️ Direct ZT measurement on legs (Harman method) and modules (impedance spectroscopy)
☑️ Thermal conductivity measurement using the LaserFlash method
☑️ High-speed infrared furnace for excellent temperature control and higher sample throughput
☑️ Wide range of available thermocouples for flexible measurement configurations
☑️ Optional camera system for high-precision resistivity measurements
| MODEL | LZT-Meter (LZT L33) |
|---|---|
| Temperature range | Infrared furnace: RT up to 800°C / 1100°C Low-temperature oven: –100°C to 500°C |
| Measurement method | Seebeck coefficient: Static DC method / Slope method Electrical resistance: Four-point measurement |
| Atmosphere | Inert, reducing, oxidizing, vacuum Helium gas with low pressure recommended |
| Sample holder | Vertical clamping between two electrodes Optional adapter for foils and thin layers |
| Sample size (cylinder or rectangle) | 2 to 5 mm base area and max. 23 mm longUp to 6 mm diameter and max. 23 mm long |
| Sample size round (disc shape) | 10 mm, 12.7 mm, 25.4 mm |
| Measuring distance of thermocouples | 4 mm, 6 mm, 8 mm |
| Water cooling | Required |
| Measuring range Seebeck coefficient | 1 µV/K to 250 mV/K (static DC method) Accuracy: ±7% / Repeatability: ±3.5% |
| Measuring range electrical conductivity | 0.01 to 2 × 10⁵ S/cmAccuracy: ±10% / Repeatability: ±5% |
| Current source | Low-drift current source from 0 to 160 mA |
| Electrode material | Nickel (–100 to 500°C) / Platinum (–100 to +1500°C) |
| Thermocouples | Type K / S / C |
| Heat conductivity Pulse source | Nd:YAG laser (25 joules) |
| Pulse duration | 0.01 to 5 ms |
| Detector | InSb / MCT |
| Thermal conductivity Measuring range | 0.01 to 1000 mm²/s |
| Addon | LSR-4 upgrade |
| DC Harman method | Direct ZT measurement on thermoelectric legs |
| AC impedance spectroscopy | Direct ZT measurement on thermoelectric modules (TEG / Peltier module) |
| Temperature range | –100°C to +400°CRT to +400°C |
| Sample holder | Needle contacts for adiabatic measuring conditions |
| Sample size | 2 to 5 mm rectangle and max. 23 mm longUp to 6 mm diameter and max. 23 mm longModules up to 50 mm × 50 mm |
