Matric Potential Sensor Using Dual Probe Heat Pulse Technique

Characterization of a New Heat Dissipation Matric Potential Sensor

Soil moisture sensors can help to reduce the amount of water needed for irrigation. In this paper we describe the PlantCare soil moisture sensor as a new type of heat dissipation sensor, its calibration and the correction for temperature changes. With the PlantCare sensor it is possible to measure the matric potential indirectly to monitor or control irrigation. This sensor is based on thermal ...

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...

Use of the Dual-Probe Heat-Pulse Technique to Monitor Soil Water Content in the Vadose Zone

et al. (1991), and has since been utilized by several researchers (Tarara and Ham, 1997; Ren et al., 1999; The dual-probe heat-pulse (DPHP) technique is emerging as a Song et al., 1999; Campbell et al., 2002). These studies useful technique for measuring soil volumetric water content ( ). have shown that the DPHP technique can provide accuHowever, few published data are available regarding the ...

Simulation of a four sensor probe using a rotating dual sensor probe

In the current project a rotating dual sensor probe has been designed and fabricated. A set of measurements were performed using the rotating dual sensor. Analysis on the results occurred, and it showed that the rotating dual sensor with the supporting algorithm has an acceptable, reliable and repeatable performance for measurements in multiphase flows.