Patent ID: 8770033

Claim:
A capacitive measurement device comprising first measurement means designed to carry out at least one of a first measurement and a detection function in relation to an object placed near said first measurement means comprising: a body of an electrically conductive material, a capacity electrode of an electrically conductive material, and a guard electrode placed between the body and the capacitive electrode and electrically insulated from the body on the one hand and from the capacitive electrode on the other hand by dielectric elements; excitation means which maintain the capacitive electrode and the guard electrode to an identical AC electrical potential; first electronic means connected to the capacitive and guard electrodes for measuring the capacitance between said capacitive electrode and said object; and second measurement means designed to carry out a second measurement function, which are placed within said body and in the vicinity of either the capacitive or guard electrode, and maintained by the excitation means to a AC electrical potential identical to that of the guard electrode.