In a wastewater treatment plant, remotely mounted gas detectors monitoring Methane CH4 (ceiling), Oxygen O2 (6 ft high) and Hydrogen Sulfide H2S (floor) have analogue outputs. The gas levels need to be saved to chart recorders located in a control room a long distance away in the plant. To save on the cost of running copper twisted pair wires, we would like to network the analogue outputs for transmission over the Ethernet infrastructure.

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