glossary category

The temperature at which water vapor has reached the saturation point (100% relative humidity)

A bundle of multiple twisted pairs within a single protective sheath (from ISO/IEC 11801: 1995)

Typically uses batteries as an emergency power source to provide power to data communications facilities until emergency generators come on line

Refers to the delivery of air from overhead ductwork

A period of time prior to when the actual measurement is taken, where the workload has been already started in an effort to get the SUT to a stable and consistent state

See temperature, wet-bulb

Temperature of air indicated by an ordinary thermometer

A crystalline metallurgical phenomenon whereby tin grows tiny hairs, which can become airborne under certain conditions and settle in electronic equipment

Refers to the delivery of air from an underfloor space, i.e., a raised-floor cavity

The temperature indicated by a psychrometer when the bulb of one thermometer is covered with a water-saturated wick over which air is caused to flow at approximately 4.5 m/s (900 ft/min) to reach an equilibrium temperature of water evaporating into air, where the heat of vaporization is supplied by the sensible heat of the air