NullablePressureAbsolute

Overview

Abstract data type

A physical quantity of dimension L^-1MT^-2 (inherited from NullablePressure) for the application type absolute pressure. A pressure absolute is a pressure relative to a perfect vacuum. This data type is also used for the difference between two pressures other than atmospheric pressure. NullablePressureAbsolute is abstract and has two concrete subtypes:

• a PressureAbsolute is an actual value for a physical quantity with a numerical value and a unit of measurement;

• a NullPressureAbsolute is a null value that explicitly indicates the absence of an actual physical quantity.

Supertypes

• NullablePressure

Subtypes

• NullPressureAbsolute

• PressureAbsolute

Implementation in Proteus Schema

All data attributes with type NullablePressureAbsolute are implemented as DEXPI generic attributes for physical quantities.

Example

See the examples for PressureAbsolute and NullPressureAbsolute.