Pretvornik absolutnega / merilnega / diferenčnega tlaka (s koraki)
Uporabite to orodje za pretvorbo absolutni pritisk (Pabs) in Tlak merilnika (Pg) z uporabo atmosferskega tlaka (Pbankomat), and to calculate diferenčni tlak (ΔP) between two points. It shows the full calculation process so engineers can verify the method, document results, and copy the output into reports.
Absolutni ⇄ merilnik (zahteva atmosferski tlak)
Diferenčni tlak (P1 − P2)
Kakšna je razlika med absolutnim, merilnim in diferenčnim tlakom?
Absolutni tlak (Pabs) is referenced to a perfect vacuum (0 Pa absolute). It is the value you typically need for gas laws,
altitude/barometric calculations, and many vacuum applications.
Merilni tlak (Pg) is referenced to local atmospheric pressure (Patm). Most industrial pressure gauges and many process sensors
report gauge pressure because it directly indicates pressure above ambient.
Diferenčni tlak (ΔP) is the difference between two pressures (P1 and P2), widely used for filters, flow across an orifice/venturi,
HVAC airflow, and level measurement in tanks.
Najpogostejše razmerje, ki se uporablja v tehniki: Pabs = Pg + Patm. If you know any two of these values, you can solve the third.
Tabela hitrega pretvorbe tlaka (skupne referenčne točke)
These quick conversions help you sanity-check results. Values below use standard relationships and typical constants (e.g., 1 atm = 101.325 kPa, 1 bar = 100 kPa, 1 psi = 6.894757 kPa).
| Skupna vrednost | kPa | bar | psi | oče | bankomat |
|---|
Namig: če delate v vakuumskih območjih, razmislite o uporabi enot za absolutni tlak in pretvorbo v merilne le, če je to potrebno za določen instrument ali specifikacijski list.
Pogosta vprašanja: Absolutni vs. manometer vs. diferenčni tlak
1) Kako pretvorim manometer v absolutni tlak?
Dodajte atmosferski tlak nadtlaku: Pabs = Pg + Patm. For example, if Pg = 200 kPa and Patm = 101.325 kPa, then Pabs = 301.325 kPa.
2) Kako pretvorim absolutni tlak v manometer?
Odštejte atmosferski tlak od absolutnega tlaka: Pg = Pabs − Patm. This tells you pressure above ambient.
3) Zakaj je pri teh pretvorbah pomemben atmosferski tlak?
Gauge pressure is defined relative to the surrounding atmosphere. If you change altitude or local weather, Patm changes slightly, which changes the gauge/absolute relationship.
4) Ali je diferenčni tlak enak nadtlaku?
Ne. Merilni tlak se nanaša na atmosfero v eni točki, medtem ko diferenčni tlak primerja dve točki: ΔP = P1 − P2. Diferenčni tlak se običajno uporablja v filtrih, tuljavah in pretočnih elementih.
5) Ali lahko izračunam ΔP z manometrskimi tlaki?
Yes—if both readings are taken with the same reference (both gauge or both absolute). When both are gauge, the atmospheric reference cancels out in the difference.
6) Kakšna je tipična vrednost atmosferskega tlaka, ki jo je treba uporabiti?
Standardni atmosferski tlak na morski gladini je 101,325 kPa (1 atm). For higher accuracy, use a local barometer value, especially in altitude-sensitive measurements.