Signal Scaling Basics for Instrumentation

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Use this guide when analog inputs look healthy in raw form but engineering tags drift because scaling blocks disagree.

Browser-based preliminary check for Signal Scaling Calculator — fast estimates, not code or stamped design output.

1Identify raw range (0–10 V, 4–20 mA mapped to counts, etc.).
2Map raw endpoints to engineering endpoints linearly unless characterized otherwise.
3Verify engineering units and offsets on both sides of the conversion.
4Test at two or more points including near alarm limits.
5Log results in commissioning records for future troubleshooting.

Use device linearization or piecewise tables; do not force one slope everywhere.

Filtering changes dynamics but not steady-state scaling; separate concerns.

Use this guide when analog inputs look healthy in raw form but engineering tags drift because scaling blocks disagree.

Browser-based preliminary check for Signal Scaling Calculator — fast estimates, not code or stamped design output.

1Identify raw range (0–10 V, 4–20 mA mapped to counts, etc.).
2Map raw endpoints to engineering endpoints linearly unless characterized otherwise.
3Verify engineering units and offsets on both sides of the conversion.
4Test at two or more points including near alarm limits.
5Log results in commissioning records for future troubleshooting.

Use device linearization or piecewise tables; do not force one slope everywhere.

Filtering changes dynamics but not steady-state scaling; separate concerns.