Hycontrol MICROFLEX-D Series - Troubleshooting Guide; Incorrect Distance Display; Erratic Analogue Trend; Locked Up or Flat Line Measurement

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8. TROUBLESHOOTING
Unit is displaying incorrect distance
 Confirm display mode is suitable. Distance is measured from sensor face to measured level. Material is measured from Low-Level to measured
level.
 If unit is measuring too deep increase Sensitivity. If the unit continues to measure too deep, increase WaveBoost.
 If unit is measuring too high, reduce Sensitivity and ensure WaveBoost is set to 0.
 Check if material is present to be measured. Unit will output and display FailSafe reading if it cannot detect a level within range.
Analogue trend is erratic/unstable
 Increase Damping value for smoother trends.
 Choose a slower Tracking speed.
 Check there are no objects interfering with the transit pulse in the application (such as ladders and cross beams).
Unit is locked up or flat line measurement
 Confirm there is material within the measurement range, the unit may go to failsafe if there is no flat level available.
 If the unit is locked to a high level perform Mapping for distance beyond false echoes.
 If the unit is locked higher than the real level check for objects interfering with the transit pulse in the application (such as ladders and cross beams).
Lower the Sensitivity/WaveBoost. Re-locate the installation to avoid the interfering object.
 If the unit is locked lower than the real level confirm the application is not within Blanking distance. Increase Sensitivity/WaveBoost until the unit
measures correct level.
 Tracking speed may be too slow for the application. Increase the Tracking speed.
PLC indication does not match measurement
 Connect a Multimeter in series with the powered loop. Compare the 'mA' diagnostic on the display with the mA reading on the loop. If these values do
not match, disconnect the loop wires and measure the resistance across the loop. This should not exceed specification.
 Confirm High-Level and Low-Level are set to the same values in MiniWave and control system.
AutoSet fails
 Increase the Sensitivity to a higher value.
 Allow the unit to run for a longer time (one minute). Re-attempt the AutoSet.
 Increase WaveBoost and re-attempt the AutoSet.
 Set High- and Low-Level manually in the Setup menu.
If problems persist, install a replacement Microflex-D in the application, and bench test the problem unit in a controlled environment. Difficult applications may
require the use of different level measurement technology; consult a Hycontrol engineer in order to find the most appropriate solution for your requirements.
9. ACCESSORIES
2” ANSI Polypropylene Flange for NPT threaded units
2” ANSI Polypropylene Flange for BSPT threaded units
Please consult Hycontrol for flange order codes.