Counter With Up/Down Signal And Separate Error Signal - Proces-Data PD 340 Manual

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7.3

Counter with up/down signal and separate error signal

This mode indicates the flow rate by means of 1 pulse signal. The error signal is closed
circuit during error-free measurement. The flow direction is indicated by the up/down signal
and the pulse frequency indicates the flow rate. An error in the Flow Transmitter will open
all 3 output signals (high-impedance state). See the signal diagram below.
40/55 Flow Transmitter, PD 340 Manual