LP/t - Laboratory Temperature Probe
LP/t is a laboratory probe for monitoring instantaneous profiles of soil temperature in soil columns or in undisturbed soil cores. Thin-wall acid-resistant steel body of the probe provides ultimate low heat conductivity, thus allowing to avoid the parasite 'thermal bridge' effects. Several LP/t probes can be inserted through the wall of the soil column or the sampling cylinder, thus allowing for vertical recording of the instantaneous profiles of temperature. Such an array, when combined with miniprobes for soil moisture/salinity LP/ms and also probes for matric potential LP/p enables collecting a set of corresponding temperature data from non-isothermal transition of drying or wetting front, from which readings of bulk electric conductivity as well as matric potential can be temperature corrected. Also heat transport coefficients (thermal conductivity, thermal diffusivity, specific heat) can be determined if a heat flux meter is installed in the column under investigation.