Probes
For laboratory measurements, with few exceptions all probe types can be used for all sample materials in the measuring range of 0.1 to 10 W/mK. In most cases you can choose a probe by shape and size of the available sample pieces or by sample preparation possibilities. For in-situ tests always the Field VLQ should be used, the smaller laboratory probes are not adequate for this purpose.
We offer complete TK04 measuring kits (VLQ kit, HLQ kit or Complete kit with HLQ and VLQ probe), including all necessary hardware and software components. But all probes are available separately for replacing defect probes or for upgrading an existing TK04 system.
Standard VLQ 70 / 60
 Standard VLQ 70 / 60 for laboratory use (choose length according to sample size) |
Probe type | needle probe |
| Measuring range | 0.1 - 10 W/mK | |
| Accuracy | ± 2 % | |
| Duration of 1 measurement | 80 s | |
| Diameter (needle) | 2 mm | |
| Length (needle) | 70 mm (VLQ 70) / 60 mm (VLQ 60) | |
| Dimensions (overall) | length:160 mm (VLQ 70) / 150 mm (VLQ 60), Ø: 16 mm (max) | |
| Minimum sample size | Ø: 40 mm *, length: 85mm (VLQ 70) / 75 mm (VLQ 60) * | |
| Sample shape | any | |
| Maximum sample size | no limit | |
| Sample temperature | -25 to 125°C | |
| Supplied parts | probe, INI file, carrying case, protective cap, drill bits, data sheet |
* Absolute minimum size, valid for low thermal conductivity materials. For higher thermal conductivities, larger samples are required.
Technical specifications are subject to change without prior notice.
Mini VLQ
 Mini VLQ for laboratory use and small samples |
Probe type | small needle probe |
| Measuring range | 0.3 - 6 W/mK | |
| Accuracy | ± 2 % | |
| Duration of 1 measurement | 80 s | |
| Diameter (needle) | 2 mm | |
| Length (needle) | 50 mm | |
| Dimensions (overall) | length:140 mm, Ø: 16 mm (max) | |
| Minimum sample size | Ø: 40 mm *, length: 60mm * | |
| Sample shape | any | |
| Maximum sample size | no limit | |
| Sample temperature | -25 to 125°C | |
| Supplied parts | probe, INI file, carrying case, protective cap, drill bits, data sheet |
* Absolute minimum size, valid for low thermal conductivity materials. For higher thermal conductivities, larger samples are required.
Technical specifications are subject to change without prior notice.
Standard HLQ
 Standard HLQ for laboratory use |
Probe type | probe for plane surfaces |
| Measuring range | 0.3 - 10 W/mK | |
| Accuracy | ± 2 % | |
| Duration of 1 measurement | 80 s | |
| Diameter (needle) | 2 mm | |
| Length (needle) | 70 mm | |
| Dimensions (overall) | Ø: 88 mm, height: 30 mm (w/o connector) | |
| Minimum sample size | Ø: 90 mm *, height: 20 mm * | |
| Sample shape | any | |
| Maximum sample size | no limit ** | |
| Sample temperature | -25 to 70°C | |
| Supplied parts | probe, INI file, carrying case, data sheet |
* Absolute minimum size, valid for low thermal conductivity materials. For higher thermal conductivities, larger samples are required.
** With pressure device: max. height 130 mm.
Technical specifications are subject to change without prior notice.
Mini HLQ
 Mini HLQ for laboratory use and small samples |
Probe type | small probe for plane surfaces |
| Measuring range | 0.3 - 3 W/mK | |
| Accuracy | ± 5 % | |
| Duration of 1 measurement | 60 s | |
| Diameter (needle) | 2 mm | |
| Length (needle) | 45 mm | |
| Dimensions (overall) | Ø: 50 mm, height: 30 mm (w/o connector) | |
| Minimum sample size | Ø: 50 mm *, height: 20 mm * | |
| Sample shape | any | |
| Maximum sample size | no limit ** | |
| Sample temperature | -25 to 70°C | |
| Supplied parts | probe, INI file, carrying case, data sheet |
* Absolute minimum size, valid for low thermal conductivity materials. For higher thermal conductivities, larger samples are required.
Technical specifications are subject to change without prior notice.
Field VLQ
 Field VLQ for field use |
Probe type | large needle probe |
| Measuring range | 0.6 - 4 W/mK | |
| Accuracy | ± 5 % | |
| Duration of 1 measurement | 240 s | |
| Diameter (needle) | 6 mm | |
| Length (needle) | 300 mm | |
| Dimensions (overall) | length: 420 mm, Ø: 42 mm (max, w/o connector) | |
| Minimum sample size | ||
| Sample shape | any | |
| Maximum sample size | no limit | |
| Sample temperature | -25 to 50°C | |
| Supplied parts | probe, INI file, carrying case, protective cap, 5 guiding tubes, insertion tool, data sheet |
Technical specifications are subject to change without prior notice.
Deep-Field VLQ
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Probe type | large needle probe |
| Measuring range | 0.6 - 4 W/mK | |
| Accuracy | <± 5 % | |
| Duration of 1 measurement | ||
| Diameter (needle) | ||
| Length (needle) | ||
| Dimensions (overall) | ||
| Minimum sample size | ||
| Sample shape | any | |
| Maximum sample size | no limit | |
| Sample temperature | -25 to 50°C | |
| Supplied parts |
Technical specifications are subject to change without prior notice.