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Why does my flow meter not match the reading of another flow meter in the same line?

by | Oct 8, 2025 | 0 comments

Mismatched flow readings are often caused by leaks, incorrect sensor settings or unsuitable installation points that prevent full flow measurement.

Possible causes:
  • There might be leaks or bypasses between the sensors.
  • One or more sensors might have incorrect scaling or pipe diameter settings.
  • Some sensors might not be measuring the full flow path due to poor installation locations.
Solutions:
  • Check the system for any leakage or open bypass valves.
  • Make sure every sensor has the correct settings for pipe diameter, gas type, and measurement range.
  • Verify that the sensors are installed in locations where they can measure the complete flow in the pipeline.
Tags: different flow meter type, different installation, inconsistent readings, reference condition error, S401, S415, S418, S421, S430, S451, S453, sensor mismatch, thermal vs pitot