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wrong pipe size causing the 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: 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
page 26). 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.
W4: RS232 NOT READY
This occurs when the equipment that is
connected to the Portaflow 300 via the RS232
is off line. Check that the connections to
ancillary equipment have been switched on.
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 page 12).
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.
W7: mA OUT OVERANGE
The mA output is over-range when the flow is
higher than the maximum mA range. Once the
4-20mA 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.
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.
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.
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.
W11: mA LOAD TO HIGH
The 4-20mA 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.
Other Messages
The messages below appear mainly when
data has been incorrectly entered or the
Portaflow 300 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.
No data exists for this sensor
A sensor has been selected that is not
available for use.
Lining thickness out of range
The pipe lining thickness has been incorrectly
entered.
Site range is 0 - 20
There are only 20 storage sites available with
0 being the QUICK START site.
•
CANNOT READ FLOW BECAUSE…
…. Pipe dimensions are invalid
•
CANNOT READ FLOW BECAUSE
…materials are invalid
•
CANNOT READ FLOW BECAUSE
…Pipe is too large for sensor set
•
CANNOT READ FLOW BECAUSE
…. Pipe is too small for sensor set
•
CANNOT READ FLOW BECAUSE
…Sensor mode is invalid for this pipe size
Temperature range is -20°C to +200°C
The temperature range of the transducers is -
20°C to +200°C.
Logging has started
This will only appear if the instrument has been
supplied with a logger.
Enter a lining thickness first
This message appears when in VIEW/EDIT
SITE DATA the user has tried to enter a pipe
lining material before entering a thickness.
APPLICATION INFORMATION
The PORTAFLOW 300 is a Transit Time
ultrasonic flow meter. It has been designed to
work with Clamp On transducers, thus
enabling liquid flowing within a closed pipe to
