Provided is a plant instrument status collection system making it possible to more accurately manage operation information for plant instruments. A plant equipment status collection system 1 according to the present invention comprises detection apparatuses 10, a portable terminal 40, a network construction apparatus 20, and a data storage apparatus 30. The portable terminal 40 comprises a tag control unit that is capable of automatically and contactlessly acquiring specific information and date/time information stored in a tag unit of the detection apparatuses 10 and is configured to be in communication with the data storage apparatus 30, wherein the portable terminal 40 selects the specific information of any of the detection apparatuses 10 in advance, determines whether or not the specific information acquired from the tag unit and the selected specific information are consistent, times this synchronously with the date/time information acquired from the tag unit in cases where these are consistent, and mak
