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Why does my flow meter always show maximum flow?

by | Oct 8, 2025 | 0 comments

Incorrect flow readings can be caused by wrong software settings, sensor contamination or moisture in the system. Regular checks help restore measurement accuracy.

Possible causes:
  • The pipe diameter or measuring range may be incorrectly set in the software.
  • Moisture or liquid water may be entering the sensor, especially in thermal mass models.
  • The sensor could be heavily contaminated with oil or particles.
Solutions:
  • Review the sensor settings in S4C-FS and correct any errors in diameter or flow range.
  • Check the compressed air system’s dew point to ensure no water condensation is reaching the sensor.
  • Inspect and clean the sensor, and make sure filters and dryers are functioning properly upstream.
Tags: contamination, dew point issue, full scale error, max flow reading, overrange, S401, S415, S418, S421, S430, S451, S453, saturated sensor, wet sensor