Micronics Portaflow 222, Руководство пользователя

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Micronics Portaflow 222 & 333 User Manual
Issue 3.1 Feb 20 Page 41
8.3 Warning and Status Messages
8.3.1 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 totaliser as described in Paragraph 3.6.1.
8.3.2 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.
8.3.3 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
–
see page 36.