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7
UK
-Switching signal for temperature limit value
-Analogue signal for volumetric flow quantity
-Analogue signal for temperature
-Switching signal for empty pipe detection
-Input for external reset signal (InD)
4.2 Direction of flow
In addition to the flow velocity and the volumetric flow quantity, the unit also de-
tects the direction of flow�
4.2.1 Determining the direction of flow (Fdir)
An arrow with the text "flow direction" on the unit indicates the positive flow direc-
tion� The flow direction can be inversed
►
Use the supplied label to mark the changed flow direction (new positive
direction of flow)�
Flow���
Process value display
corresponds to the marked flow direction
+ (positive)
against the marked flow direction
- (negative)