Frequency + Analogue Input

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Contrec 515 – FA01 Add/Subtract Flow Computer - 2 Channel Input (Volume)
Contrec 515 – FA02 Add/Subtract Flow Computer - 2 Channel Input (Mass)
Contrec 515 – FA03 Add/Subtract Flow Computer - 2 Channel Input (Energy)
Contrec 505 – FG01 Generic Flow Computer, Tailored for Inputs from Volumetric or Mass Flow Meters