Dwyer UFC User Manual download pdf (Page 49)

6: Troubleshooting

4-20mA ERRORS

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 Paragraph 3.4.1.

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 Paragraph 3.4.1.

SET-UP ERRORS

ERR:Pipe OD range! Interpretation: You have entered an out-of-range value for the pipe outside

diameter dimension – i.e. larger or smaller than the unit or sensor can be used on.

Response: Enter a valid number.

ERR:Wall thk. range! Interpretation: You have entered an out-of-range value for the pipe wall thickness

dimension – accepted range is 0.04 to 3 inches (1 to 75 mm).

Response: Enter a valid number.

ERR:Lining thick. range! Interpretation: You have entered an out-of-range value for the lining thickness

dimension – acceptable range is 0 to 1 inch (0 to 25 mm).

Response: Enter a valid number.

ERR:Temperature range! Interpretation: You have entered an out-of-range value for the fluid temperature.

Accepted temperature range -4°F to +392°F (-20°C to +200°C).

Response: Enter a valid number.

ERR:Invalid Date or Time! Interpretation: The entered Date or Time is invalid, or when setting up ‘timed’ data

logging the Stop time is set earlier than the Start time.

Response: Enter a valid Date and Time.

ERR:Invalid Sensor or Mode Interpretation: The selected temperature is higher than the maximum allowed for

the sensor type.

Response: Change the temperature.

Mode: Err Type Interpretation: The selected sensors are invalid and the mode cannot be verified.

Response: Choose a mode that gives a non-zero separation distance.

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Dwyer UFC User Manual Page 49