Ultraflux Uf 841, User Manual

Page: 89 / 105

89
NT UF 841 CP GB (d) / June 2015
•
The measurement differs from the predicted flow
Actions to take
o
Check that the probes are far enough away from hydraulic disturbances.
o
Check the precise dimensions of the section of the pipe or the channel at the location of the
measurement and the position of the probes.
o
Have faith in your Uf 841.
•
The message "relay overflow" appears permanently or intermittently in the case of a
relay output configured in totalizer mode
Cause:
o
Too many pulses output within the allocated time.
Actions to take
o
Adapt the pulse weight and/or the width based on the flow of your application (see the
"Totalizer" section 5.4.4 - point 5).
•
The message "open loop" appears permanently when setting a current output
Cause:
o
Break in the loop.
•
The message "outside limits" appears permanently or intermittently when setting an
analogue input
Cause:
o
Current or voltage outside the range of use.