GF PORTAFLOW 330, Инструкция по эксплуатации

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Troubleshooting Instruction manual
44
9.3 Warning & Status Messages
Flow rate errors
No flow signal
Interpretation: This message appears when the
transducers cannot send or receive signals to each other.
Response: Firstly check that all cables are connected,
transducers are on the pipe correctly with sufficient
couplant on the face. This condition could also be due to a
partially empty pipe, aerated liquid, particulate content
too high or when the condition of the pipe being
measured is poor.
Flow signal is poor
Interpretation: This warning appears when the signal is
lower than 25%.
Response: This could be due to an application problem, a
poor quality pipe – see also the conditions for No flow
signal (above). Check for sufficient couplant.
Zero cut-off error!
Interpretation: You have entered an out-of-range value in
the Zero cutoff field in the Options menu.
Response: Enter a valid number.
Totaliser beyond
maximum!
Interpretation: The totaliser has overflowed its maximum
count. The counter will roll-over and restart from zero
but this message alerts you to the fact.
Response: Reset the totalizer.
Pulse errors
Pulse Rate > Max
Interpretation: The flow rate exceeds the capability of the
pulse output – i.e. too many pulses per second are
required than can be achieved.
Response: Narrow the pulse width time or increase the
volume per pulse
Pulse volume error!
Interpretation: You have entered an out-of-range value in
the Pulse volume error field in the PULSE OUTPUT menu.
Response: Enter a valid number.
Pulse width error
Interpretation: You have entered an out-of-range value in
the Pulse width error field in the PULSE OUTPUT menu.
Response: Enter a valid number.
4-20mA errors
mA out > Max
Interpretation: The actual flow is higher than the
maximum set on the mA range.
Response: Re-scale the 4-20mA output to be able to cope
with the higher flow.