Pressure Transducer Scaling Calculator

Work out pressure transducer scaling instantly with clear inputs, formula shown and shareable results.

About Pressure Transducer Scaling Calculator

A ratiometric 0.5-4.5 V transducer maps pressure linearly onto its output span. Pressure equals (reading - offset)/span times full scale. The 0.5 V offset is again a live zero, letting an open circuit or sensor fault be distinguished from genuine zero pressure.

Formula

Transducer scaling

P = (Vout - Vmin) / (Vmax - Vmin) x full scale pressure

Worked example

With the default values below, Pressure Transducer Scaling Calculator returns Measured pressure of 4.63. Change any input above and every figure here is recalculated in your browser.

Inputs used

Output at zero pressure: 0.5 V
Output at full scale: 4.5 V
Full scale pressure: 10 bar
Present output: 2.35 V

Results

Measured pressure: 4.63 bar
Output span: 4.00 V
Sensitivity: 0.40000 V/bar
Percentage of full scale: 46.25% %

Step by step

1Values used
2Transducer scaling
3Measured pressure= 4.63 bar
4Output span= 4.00 V
5Sensitivity= 0.40000 V/bar
6Percentage of full scale= 46.25 %

Assumptions and limits

The result is derived only from the 4 inputs listed above. Anything not among them is not part of the calculation.
In particular, this calculator does not take inflation, tax, fees or charges or compounding frequency into account.
Figures are rounded for display to 5 decimal places, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.

How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.

Frequently Asked Questions

What does ratiometric mean here?

The output is a fixed fraction of the supply, typically 10% to 90% of 5 V, so measuring it against the same 5 V reference cancels supply variation.

Why is a live zero useful?

A reading below 0.5 V indicates a fault rather than a valid low pressure, so the control system can alarm rather than act on bad data.