Allen-Bradley 1771-CFMK Flowmeter Module - 4 Channels By wayne No Comments on Allen-Bradley 1771-CFMK Flowmeter Module - 4 Channels 2 Min Read Procure the Allen-Bradley 1771-CFMK configurable flowmeter module with 4 inputs & 4 outputs. Ideal for PLC-5 systems & high-speed totalizing.