Probes

Mini VLQ now available

New Mini VLQ needle probe for thermal conductivity meter TK04The new Mini VLQ is a 50 mm long needle probe with a diameter of 2 mm for small samples. It can be used where standard size probes are too large for the available sample dimensions. This includes compressible materials like soil samples which cannot be tested with the already available Mini HLQ for plane surfaces.

Use the Mini VLQ for samples with a minimum diameter of 40 mm and a minimum length of 60 mm. The Mini VLQ has a measuring range of 0.3 to 6 W/mK and an accuracy of ± 5%.

 

New Mini VLQ   ˅

Technical Specification TK04

Probes

  Standard VLQ:  needle probe for TK04 thermal conductivity meter Standard HLQ: probe for plane surfaces for TK04 thermal conductivity meter Mini HLQ: small probe for plane surfaces for TK04 thermal conductivity meter Field VLQ: large needle probe for TK04 thermal conductivity meter
Name Standard VLQ Standard HLQ Mini HLQ Field VLQ
Probe type needle probe probe for plane surfaces small probe for plane surfaces large needle probe
Application laboratory use laboratory use laboratory use, small samples field use
Measuring range 0.1 - 10 W/mK 0.3 - 10 W/mK 0.3 - 3 W/mK 0.6 - 4 W/mK
Accuracy ± 2 % ± 2 % ± 5 % ± 5 %
Duration of 1 measurement 80 s 80 s 60 s 240 s
Diameter (needle) 2 mm 2 mm 1.5 mm 6 mm
Length (needle) 70 mm 70 mm 45 mm 300 mm
Dimensions (overall) length:160 mm, Ø: 16 mm (max) Ø: 88 mm, height: 30 mm (w/o connector) Ø: 50 mm, height: 30 mm (w/o connector) length: 420 mm, Ø: 42 mm (max, w/o connector)
Minimum sample size Ø 40 mm *, length: 85mm * Ø 90 mm *, height: 20 mm * Ø 50 mm *, height: 20 mm *  
Sample shape any any any any
Maximum sample size no limit no limit ** no limit ** no limit
Sample temperature -25 to 125°C -25 to 70°C -25 to 70°C -25 to 50°C
Supplied parts probe, INI file, carrying case, protective cap, drill bits, data sheet probe, INI file, carrying case, data sheet probe, INI file, carrying case, data sheet probe, INI file, carrying case, protective cap, 5 guiding tubes, insertion tool, 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.