SFIDK.PS.029.E5.02 / SW 2.01.0736
Measurement direction, menu 3.1.5.2
SITRANS FUS060 is able to measure in both flow directions (forward and reverse) or in forward
direction only. The selection is made by the setting.
– forward + reverse
– forward only
If “forward” is parameterized, signals are only output or accumulated internally for a flow in this
direction.
Setting “Forward+reverse” Setting “Forward”
Hysteresis of flow, menu 3.1.5.3
Signalling of flow direction can operate with a hysteresis determined by the user. The setting
is made in % of full scale value in menu item “3.1.5.3 Hysteresis”. If, for example, the hysteresis
is 1%, the relay contact does not switch until flow is –1% of full scale value and it returns to its
original position when flow is +1% of full scale value.
The operating principle of the relay (digital output 2), contact open or closed in forward flow-
direction is determined in menu item “4.3.2 Signal Type”.
Example 1: Hysteresis = 0% Example 2: Hysteresis = 1%
The other hysteresis menus are of the same principle.
Note
The low flow cut off suppression has no influence on signalling of flow direction.
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