Dwyer Series PUF - Manual (Page 50)

5: Troubleshooting
46
4 to 20 mA ERRORS
mA out > Max Interpretation: The actual flow is higher than the maximum set on the mA range.
Response: Re-scale the 4 to 20 mA output to be able to cope with the higher flow – see
page 35.
Calibration 20mA
Error! NOTE: The 4 to 20 mA output is calibrated before the instrument leaves the factory and
should not require further adjustment.
Interpretation: You have adjusted the DAC outside its accepted range when calibrating
the 20 mA signal output.
Response: Re-calibrate the 4 to 20 mA output – see page 35.
Calibration 4mA Error! NOTE: The 4 to 20 mA output is calibrated before the instrument leaves the factory and
should not require further adjustment.
Interpretation: You have adjusted the DAC outside its accepted range when calibrating
the 4 mA signal output.
Response: Re-calibrate the 4 to 20 mA output – see page 35.
DATA LOGGING ERRORS
Log not empty! Interpretation: Not yet implemented.
Log memory full Interpretation: This occurs when all the data logger memory locations are filled. The
effect on the logging process will depend on the setting of the
Memory rollover field in
the REAL TIME LOGGER screen (which may be set to Stop or Overwrite).
Response: Clear the logger memory, as described in Paragraph 3.6.4.
BATTERY ERRORS
Battery Low Interpretation: The battery has discharged to below 30% remaining. This leaves the
instrument with approximately 4 hours remaining, depending on power usage, before it
needs recharging.
Response: Recharge the internal battery at the earliest opportunity. Do not leave the
instrument for a prolonged period with a fully discharged battery.
Battery Exhausted Interpretation: The battery is approaching a fully discharged state and the instrument is
about to store the internal data and shut-down.
Response: Recharge the battery.