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Effect of Flow Direction on frequency outputs
Flow Direction affects how the transmitter reports flow values via the frequency outputs. The
frequency outputs are affected by Flow Direction only if Frequency Output Process Variable is set
to a flow variable.
Effect of the Flow Direction parameter and actual flow direction on
frequency outputs
Table 4-6:
Flow Direction setting Actual flow direction
Forward Zero flow Reverse
Forward
Hz > 0 0 Hz 0 Hz
Reverse
0 Hz 0 Hz Hz > 0
Bidirectional
Hz > 0 0 Hz Hz > 0
Absolute Value
Hz > 0 0 Hz Hz > 0
Negate Forward
0 Hz 0 Hz Hz > 0
Negate Bidirectional
Hz > 0 0 Hz Hz > 0
Effect of Flow Direction on discrete outputs
The Flow Direction parameter affects the discrete output behavior only if Discrete Output
Source is set to Flow Direction.
Effect of the Flow Direction parameter and actual flow direction on
discrete outputs
Table 4-7:
Flow Direction setting Actual flow direction
Forward Zero flow Reverse
Forward
OFF OFF ON
Reverse
OFF OFF ON
Bidirectional
OFF OFF ON
Absolute Value
OFF OFF OFF
Negate Forward
ON OFF OFF
Negate Bidirectional
ON OFF OFF
Effect of Flow Direction on digital communications
Flow Direction affects how flow values are reported via digital communications.
Configure process measurement
Configuration and Use Manual 43