Laurent et al. (2005) proposed an empirical relationship between the permittivity, K, and the pseudo transit time, t2, measured with a TRIME TDR System (Imko GmbH, Ettlingen, Germany). Different probe designs are available for the TRIME System. Among these are access tube cylindrical probes (TRIME-T3), two-rod probes with internal electronics (e.g., TRIME-EZ or TRIME-IT), and simple waveguides without electronics connected to an external TDR instrument (such as the P2 and P2Z probes connected to a handheld TRIME-FM). The P2 probe and TRIME-IT share the same rod geometry and therefore show the same performance. The same holds for...

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