Absoluter Druck vs. Manometerdruck vs. Differenzdruck
Verwenden Sie diesen kostenlosen Rechner, um zwischen absolutem Druck und Manometerdruck umzurechnen oder den Differenzdruck zwischen zwei Prozesspunkten zu berechnen. Es unterstützt gängige technische Einheiten wie Pa, kPa, MPa, bar und psi.
Kalkulator
Wählen Sie einen Berechnungsmodus
Wählen Sie unten einen Modus aus. Der Rechner aktualisiert die Beschriftungen, die Formel und die Ergebniserklärung automatisch.
Ergebnis
Absoluter Druck
Referenced to perfect vacuum
Absolute pressure starts at zero vacuum, so it is useful when atmospheric variation matters. Typical label: PSIA.
Referenced to local atmosphere
Gauge pressure shows how much pressure is above or below the surrounding air. Typical label: PSIG.
Referenced to another process point
Differential pressure is the difference between two measured points. Typical label: PSID.
Comparison
Absolute vs. Gauge vs. Differential Pressure
The difference is the reference point. That reference determines how the pressure is measured, displayed, and used in real systems.
| Drucktyp | Referenzpunkt | Common Label | Typical Uses |
|---|---|---|---|
| Absoluter Druck | Perfect vacuum | PSIA | Vakuumsysteme, Gasgesetze, höhenempfindliche Messung |
| Druckdruck | Atmosphärendruck | PSIG | Kompressoren, Hydraulik, Pneumatik, alltägliche industrielle Messung |
| Differenzdruck | Ein weiterer Prozesspunkt | PSID | Filter, Durchflussmessung, Tankfüllstand, Raumdruckbeaufschlagung |
Formeln
Kerngleichungen, die Sie kennen sollten
Beispiele
Kurze praktische Beispiele
Anwendungen
Wann die einzelnen Druckarten verwendet werden sollten
Verwenden Sie dabei Absolutdruck
Sie benötigen einen echten Druckwert relativ zum Vakuum, insbesondere bei Vakuumgeräten, Gasberechnungen und hochpräzisen Prozessarbeiten.
Verwenden Sie dabei Manometerdruck
You want to know pressure relative to surrounding air, such as in air compressors, pumps, hydraulic systems, and most routine plant measurements.
Use differential pressure when
You need to compare pressure between two points, such as across a filter, orifice, heat exchanger, clean room, or sealed tank system.
FAQ
Frequently asked questions
What is the difference between absolute pressure and gauge pressure?
Absolute pressure is measured from perfect vacuum. Gauge pressure is measured from the surrounding atmospheric pressure.
Kann der Manometerdruck negativ sein?
Yes. If the measured pressure is below atmospheric pressure, the gauge pressure is negative.
What does differential pressure mean?
Differential pressure is the pressure difference between two points. It is often used for filter monitoring, flow measurement, and level measurement in closed tanks.
Why is atmospheric pressure important in pressure conversion?
Because gauge pressure uses atmosphere as the reference. To convert correctly between gauge and absolute pressure, you need atmospheric pressure.
What are PSIA, PSIG, and PSID?
PSIA means pounds per square inch absolute. PSIG means pounds per square inch gauge. PSID means pounds per square inch differential.