Installation Instruction manual
12
If the flow direction is reversed, the volume
flow is still displayed. The activity indicator
changes from a star to an exclamation mark,
no more pulses are generated and the
4 – 20 mA current output changes to a 3.5 mA
alarm status.
If the U1000 V2 does not detect a valid signal
'Sig: 00%' is shown.
In this case please make sure you followed the
steps in section 8.4 Adjusting the sensor
distance and 8.5 Mounting the U1000 V2 on the
pipe correctly.
See also section 13 Troubleshooting for further
advice.
8.4 Adjusting the sensor distance
Maximum accuracy
The two sensors must be placed at defined distance relative to each other, where the
distance depends on the pipe inside diameter and pipe material.
Define optimal sensor distance with entering your pipe credentials in the U1000 V2 start-
up wizard (see section 8.3 Start-Up). (E.g. B-4 for PVC-U pipe with 50 mm inside diameter)
Loosen the sensor mounting screws.
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