Probe for Measuring Soil Specific Heat Using A Heat-Pulse Method

Laboratory Evaluation of the Dual-Probe Heat-Pulse Method for Measuring Soil Water Content

to evaluate the level of accuracy and precision that can be achieved with the DPHP method. Tarara and Ham The dual-probe heat-pulse (DPHP) method provides a means of (1997) conducted a laboratory experiment in which estimating volumetric soil water content ( ) and change in volumetric water content ( ) from measurements of volumetric heat capacity. DPHP-based estimates were compared with values...

Open hardware portable dual-probe heat-pulse sensor for measuring soil thermal properties and water content

using an improved heat pulse probe design

[1] The heat pulse probe (HPP) technique has been successfully applied for estimating water flux density (WFD). Estimates of WFD have been limited to values greater than 10 cm d , except for two recent studies with lower detection limits of 2.4 and 5.6 cm d . Although satisfactory for saturated soils, it is recognized that current HPP capabilities are limited for applications in the vadose zone...

Evaluation of the Heat Pulse Ratio Method for Measuring Soil Water Flux

ods for measuring water flux (Hopmans et al., 2002; Mori et al., 2003; Ren et al., 2000; Wang et al., 2002). Soil water flux is an important hydrologic parameter, yet few techHeat pulse methods for measuring water flux are niques for measuring it in situ are available. Here we evaluate the based on measuring the convective transport of a heat heat pulse ratio method for measuring water flux. We...

A Hybrid Method for Measuring Heat Flux

This paper reports on the development and evaluation of a novel hybrid method for obtaining heat flux measurements. By combining spatial and temporal temperature measurements, it is shown that both the time response and accuracy of a heat flux sensor can be improved. This hybrid method was shown to increase the time response of a heat flux sensor mounted on a high conductivity material by a fac...