A low-power autonomous controller has been developed to meet the requirements of the upstream oil-and-gas industries. Model FCN-RTU can accommodate up to eight input/output (I/O) modules and can handle 256 I/O signals. The controller is rated for use in temperatures from -4 to 158ºF (-20  to 70ºC), and it can support both liquid and gas calculations that are compliant with API and AGA standards.yokogawa_IN

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