SEGMENsensor's free calculators convert 4–20 mA loop current to engineering units, pressure between psi, psig, psia, bar and kPa, and hydrostatic pressure to liquid level. Each tool shows its formula, worked examples and the standard or reference data it uses (NIST, IEC).
Quick, browser-based calculators written by our application engineers, so you can check every result yourself.
Free 4-20 mA scaling calculator: convert loop current to pressure, level or % of span and back, with the formula, worked examples and fault-current limits.
Open calculator →Free pressure converter with gauge and absolute pressure: psi, psig, psia, bar, mbar, kPa, MPa, mmHg, inH2O and mH2O, with NIST conversion factors and examples.
Open calculator →Free hydrostatic tank level calculator: convert pressure to liquid height for water, diesel, seawater or any density, and size a submersible level transmitter range.
Open calculator →| Tool | Formula | Reference |
|---|---|---|
| 4–20 mA Calculator | PV = LRV + (I − 4) ÷ 16 × (URV − LRV) | IEC 60381-1; NAMUR NE 43 fault levels |
| Pressure Unit Converter | 1 bar = 14.5038 psi; psia = psig + p_atm | NIST SP 811 |
| Hydrostatic Level Calculator | h = P ÷ (ρ × g) | NIST CODATA gₙ = 9.806 65 m/s² |
Yes. They run in your browser, need no sign-up and do not send your inputs anywhere.
Pressure factors follow NIST SP 811; standard gravity is the NIST CODATA value 9.806 65 m/s²; the 4–20 mA scaling follows the linear current signal defined for process instruments (IEC 60381-1).
Yes — the hydrostatic level and 4–20 mA tools show the pressure or range you need; our engineers can confirm the model within 24 hours.