KROHNE UFM 610P EN - Manual (Page 44)

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5.3.2 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.
5.3.3
W3: No prop signal
This occurs when the fixed transducer is unable to transmit and receive a signal across the pipe, for the same reasons as
explained in E2. The instrument is capable of measuring the sound propagation rate of the liquid (See 4.6.8.11). The message
will only appear when the user has asked the instrument to make this measurement and not when a fluid type has been selected
from the list or the black sensor cable is not connected.
5.3.4 W4: RS232 not ready
This occurs when the equipment that is connected to the UFM 610 P via the RS232 is off line. Check the connections and that
ancillary equipment has been switched on.
5.3.5 W5: Log memory full
This occurs when all memory blocks in the 112K built data logger have been used up. (To clear the memory see 3.5.8).
5.3.6 W6: 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.
5.3.7 W7: mA out average
The mA output is overange when the flow is higher than the maximum mA range. Once the 4-20mA range is 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.
5.3.8 W8: Pulses at maximum
This message occurs when the pulses have been set up and the flow is higher than the maximum that has been set. It is possible
to be able to re-scale the pulse output to cope with the higher flow.
5.3.9 W9: Battery low
The battery low warning occurs when battery indication is on 20%. This leaves the instrument with approximately 30 minutes
usage before it needs recharging.
5.3.10 W10: No temp signal
Inside the transducer block is a temperature sensor that monitors the application temperature. When it is not connected between
the electronics and the sensor, then the above error message is displayed.
5.3.11 W11: mA load to high
The 4-20mA output is designed to work with a load up to 750
Ω
. When the load is too high or not connected, the above warning
message will be displayed.
5.4 Other messages
The messages below appear mainly when data has been incorrectly entered or the UFM 610 P is trying to be used on an
application that it is not capable of working on.
5.4.1 Pipe OD out of range
The outside diameter of the pipe has been entered and is out of range of the instrument.