Referenstrycket
Referenstrycket is a baseline pressure used as a reference point in measurement, calibration, and theoretical calculations. By establishing a defined reference pressure, scientists and engineers can express other pressures as relative quantities and compare results across instruments and experiments. The choice of referenstrycket depends on the context: it may be a fixed standard value or the ambient atmospheric pressure at the location of measurement.
In thermodynamics, the term P° or referenstrycket is often set to 1 bar (100 kPa). Standard-state properties
In many practical contexts, pressures are measured as gauge pressure, defined relative to atmospheric pressure. Here,
Usage and importance: Using a defined referenstrycket allows consistent data comparison between laboratories, instruments, and literature.