How should we carry out wiring when using PF2A7 series just to check the flow rate display?

Please carry out wiring at the following two points: 〔1〕 Brown wire・・・positive （＋） of 24VDC, 〔3〕 Blue wire・・・negative（－） of 24 VDC. Please insulate any unused wires. No setting is required and flow rates will be shown without any change. It is also possible to check accumulated flows by operating a button.