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Why does my flow meter have power but no output?

by | Oct 8, 2025 | 0 comments

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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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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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