Glossary
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The terms and definitions included
in this glossary were taken from "ASHRAE Terminology of Heating, Ventilation,
Air Conditioning & Refrigeration".
To access the complete glossary please
visit ASHRAE's Bookstore.
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| sensor |
1. device or
instrument designed to detect and measure a variable.
2. device placed in a medium to be measured that
has a change in output signal related to a change in the sensed medium. |
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| separator filter |
vessel that removes solids
and entrained liquid from a liquid or gas stream, using a combination of a
baffle or a coalescer with a screening (filtering) element |
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| sequence |
1. to put a set of symbols into an arbitrarily
defined order, i.e., to select A if A is greater than or equal to B, or select
B if A is less than B.
2. arbitrarily defined order of a set of symbols,
i.e., an orderly progression of items of information or of operation in
accordance with some rule. |
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| sequencer |
instrument that provides
sequence control |
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| service |
provision of what is
necessary, short of repair, to effect a maintenance program. It usually is
based on manufacturer’s recommended procedures |
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| service water heating | heating water for domestic
or commercial purposes other than space heating |
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| serviceability |
1. capability of a building, assembly, component,
product, or construction to perform the function(s) for which it was designed
and constructed, based on assumed levels of use and maintenance. Compare
durability. 2. pertaining to the ease
with which equipment in buildings can be serviced for maintenance purposes |
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| set |
1. to place a control device into a specified
state usually other than that denoting zero or blank.
2. to place a
binary cell into the “one” state. |
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| set point |
1. in process
control systems, a fixed or constant command for a relatively long time.
2. point at which
the desired value of the controlled variable is set. |
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| set pressure | pressure level at which a
pressure-relief device is set to operate; the value marked on the valve or
indicated on the switch |
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