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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.

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Why does my flow meter have power but no output?

No output signal from a flow meter can be caused by incorrect wiring, wrong output scaling, a faulty component or mismatched signal configuration.

Possible causes:
  • The output signal wiring might be connected incorrectly.
  • A fuse or component in the measurement system may be blown.
  • The analog output scaling (e.g., 4–20 mA) might not be correctly configured.
  • The installed output board might not match your system’s signal requirements.
Solutions:
  • Double-check the output wiring using the instructions in the user manual.
  • Use a multimeter to check whether any signal is present on the output lines.
  • Open the S4C-FS software and ensure the correct signal scaling is selected.
  • Confirm that the sensor’s output (e.g., 4–20 mA, Modbus) matches the input expectations of your data logger or PLC.
Tags: 4–20 mA error, analog signal, Modbus signal missing, no output, powered but no reading, S401, S415, S418, S421, S430, S451, S453, scaling, wiring
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