Patent ID: 7554247

Claim:
A measuring device for detecting a target component in a sample solution, comprising: at least one sensor unit configured as a sensor including: a substrate having first and second ends on opposite ends, and substrate surface with a printed circuit formed thereon, said printed circuit including first and second terminal contacts and first and second conductors, said first and second terminal contacts being disposed at said first end and respectively connected to said first and second conductors; a resonator having first and second excitation electrodes on respective first and second opposing sides, said first excitation electrode having an adsorbing layer disposed thereon which adsorbs said target component, said resonator having first and second lead electrodes respectively electrically connected to said first and second excitation electrodes; said resonator being supported over and parallel to said substrate proximate said second end with said second excitation electrode suspended facing said substrate and parallel to said substrate surface, and said second excitation electrode suspended over a sealed space defined at least in part by said resonator and said substrate; said first and second conductors being respectively electrically connected to said first and second lead electrodes of said resonator by a conductive adhesive, said second lead electrode being disposed arcuately about a portion of a perimeter of said seal space and a seal being effect to said second lead electrode; and a case having a first opening surrounding said first excitation electrode and configured to define a sample solution accommodation area communicating with said adsorbing layer, said case having a second opening configured for injection of said sample solution and communicating with said sample solution accommodation area; a measuring device having a device body and including an oscillation circuit therein; said measuring device defining insertion holes arranged in a horizontal line and each configured to detachably accept one of said at least one sensor unit, each of said insertion holes having contacts for connecting the first and second terminal contacts to the oscillation circuit; and said measuring device being configured to determine, based on oscillation of said at least one resonator, at least one of: presence/absence of the target component; or a concentration of the target component in the sample solution.