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Support Center: Guides & FAQs

Find guidance on installation, product selection, technical concepts, and troubleshooting.

This Knowledge Base provides clear answers about compressed air monitoring and SUTO iTEC products. Topics include installation, choosing the right instruments, and solving common issues. We update this section regularly with new content. If you cannot find the information you need, please contact us.

Customer Support

Troubleshooting & Maintenance (2)

b

Why does my flow meter always show maximum flow?

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
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b

Why does my flow meter read very erratically or show flow spikes?

Fluctuating flow readings are often caused by contaminated gas, turbulent flow or incorrect sensor installation. Stable conditions improve measurement reliability.

Possible causes:
  • The air or gas might be contaminated with moisture, oil, or particles.
  • Turbulent flow caused by nearby elbows, valves, or other obstructions may be affecting readings.
  • The sensor could be loose or not inserted to the correct depth.
Solutions:
  • Inspect filters and dryers upstream of the sensor to ensure clean, dry air.
  • Check for rust, oil, or debris that could be interfering with the sensor element.
  • If possible, move the sensor to a more stable section of the pipe, away from bends or valves.
  • Make sure the sensor is firmly secured at the correct insertion depth and orientation.
Tags: contamination, dirty air, flow spikes, noisy signal, S401, S415, S418, S421, S430, S451, S453, turbulence, unstable flow, unstable readings, vibration
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