Engineering Calculators

Instrumentation

4–20 mA scaling, DP level, pressure conversions and range checks. Select a calculator, enter the design data and review the stated formula and result.

Important: Results are preliminary and do not replace API, ASME, IEC, ISO, project specifications, vendor guarantees, process simulation or a formal design review. Verify units and use absolute pressure for gas calculations.

Equation and unit references: SI conversion practice follows NIST guidance; pump-assessment context follows the U.S. Department of Energy MEASUR resources; ideal-gas compressor relations follow standard isentropic relations described by NASA Glenn Research Center.