International site for Spirax Sarco Fax: (803) 714-2222 An
overview of the units of measurement used in the Steam and
Condensate Loop including temperature, pressure, density,
volume, heat, work and energy. Use the quick links below to take
you to the main sections of this tutorial: Throughout the
engineering industries, many different definitions and units
have been proposed and used for mechanical and thermal
properties. The problems this caused led to the development of
an agreed international system of units (or SI units: Système
International d'Unités). In the SI system there are seven well-
defined base units from which the units of other properties can
be derived, and these will be used throughout the Steam
Engineering Tutorials. The SI base units include length (in
metres), mass (in kilograms), time (in seconds) and temperature
(in kelvin). The first three will hopefully need no further
explanation, while the latter will be discussed in more detail
later. The other SI base units are electric current (i