Signals and sensors

0–10 V and 1–5 V signal scaling calculator

Scale a linear voltage signal to engineering units, or reverse the calculation, from the signal and engineering ranges.

Calculate

Signal and engineering range
V
V
V
For display only, for example bar, °C or %RH.

Worked example

Engineering value

50 %

Signal voltage
5 V
Position across the entered voltage span
50 %

The signal is within the entered voltage span. Verify input impedance, reference and isolation separately.

Method and assumptions

Formula

Value = low + (V − Vlow) × (high − low) ÷ (Vhigh − Vlow)

This is a two-point linear transfer. Confirm the transmitter output, receiver input range, reference conductor and input impedance.

Limits of this result

  • The calculation does not include source impedance, input loading, ground offset, isolation or cable noise.
  • A nonlinear sensor requires its own transfer function or calibration table.

Technical sources

  1. NI-DAQmx raw-data voltage scalingNational Instruments · updated 2023-04-20
  2. Introduction to FOUNDATION Fieldbus ScalingNational Instruments · updated 2025

Put the value to work

Read the related engineering guidance, or carry this task into System Builder to identify the signal path and EpiSensor products.

Continue in System Builder Read: What Is SCADA?

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