A Multiprobe Heat Pulse Sensor for Soil Moisture Measurement Based on PCB Technology.

Heat dissipation sensors operate based on the temperature dependence of the transient heat conduction within the soil, which is a function of the soil characteristics and its water content. After a heat pulse with controlled energy is applied to a heater, it is possible to show that the maximum temperature rise ATM measured in the temperature sensing element can be related to the volumetric water ...