Wiring Hart input to Flow-x
The first 4 analog input circuits of each Flow-X/M flow module have an on-board HART modem to facilitate HART communication.
The Flow-X flow computer uses an internal 250 Ω resistor for its analog inputs, which is adequate for HART communication.
The flow computer supports both a single HART transmitter and multiple HART transmitter per loop.
If of a single HART device in the loop, the 4-20 mA signal is measured in parallel and available in the
software.
In systems with HART inputs where a separate external analog input common is used, it is required
to connect the analog input common and the 0 V with a 50 μF capacitor in-between.
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