Patent ID: 8352198

Claim:
A sensing sensor being attachably/detachably connected to a main body of a measuring device for sensing a sensing target based on variation of natural frequency of a piezoelectric vibrator, comprising: a wiring substrate; a piezoelectric vibrator being provided on the wiring substrate parallel therewith and having respective electrodes being formed on both surfaces of a piezoelectric piece, wherein the electrode of another surface side of the piezoelectric piece being faced to a recessed portion divided from a space for filling the sample solution; an absorbing layer being formed on one surface side as an upper surface of a piezoelectric piece for capturing the sensing target in a sample solution; an information storing section provided at the wiring substrate for storing information peculiar to said sensing sensor which is deciphered by the measuring device; a cover case surrounding an upper space over the one surface side of the piezoelectric piece for forming a space to fill the sample solution and having a fill port through which the fluid sample solution is poured; wherein said terminal portions are connected to terminal portions comprising a unit for determining whether or not said sensing sensor is used based on the deciphered information, and indicating the used state.