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• The grease has not been applied to
the transducers
• The condition of the pipe being
measured is poor.
Warning Messages
W1: Check site data
This message occurs when the application
information has been entered incorrectly
or the wrong sensors have been attached
to the wrong pipe size causing the system
timing to be in error. The site data needs
to be checked and the instrument
reprogrammed.
W2: Signal timing poor
Unstable signal timing or differing up/down
stream times, indicate that the liquid is
aerated or pipe surface is of poor quality.
W3: Flow signals poor
This warning appears when there is a
signal lower than 25%. This could be due
to the application, a poor quality pipe,
amongst others.
W4: mA OUT Overange
The mA output is over-range when the
flow is higher than the maximum mA
range. Once the 4-20mA has been set up
and the flow goes above the range set
then this message will appear. It is
possible to re-scale the 4-20mA to be able
to cope with the higher flow.
W5: BATTERY LOW
The battery low warning occurs when
battery indication is on 40%. The
instrument has approximately 30 minute’s
usage before it needs recharging. (See
application note at the back of this
manual)
W6: mA load too high
The 4-20mA Output is designed to work
with a load up to 750Ω. When the load is
too high or not connected, the above
warning message will be displayed.
Other Messages
The messages below appear mainly when
data has been incorrectly entered or the
Portaflow 204 Plus! is trying to be used on
an application that it is not capable of
working on.
Pipe OD out of range
The outside diameter of the pipe has been
entered and is out of range of the
instrument.
Wall thickness out of range
The wall thickness that has been entered
is out of range of the instrument.
Lining thickness out of range
The pipe lining thickness has been
incorrectly entered.