Dwyer Series PUF - Manual (Page 49)

5: Troubleshooting
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5.3 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: Check that all cables are connected, transducers are on the pipe correctly
with sufficient couplant on the face.
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.
Totalizer beyond
maximum! Interpretation: The totalizer 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 as described in Paragraph 3.6.1.
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, as described
on page 38.
Pulse volume error! Interpretation: You have entered an out-of-range value in the Pulse volume error
field in the PULSE OUTPUT menu – see page 38.
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 – see page 38.
Response: Enter a valid number.