Related Words

Arbor Press: A hand-operated machine tool designed for applying high pressure for the purpose of pressing together or removing parts.

Pressure Gradient: The amount of pressure change that occurs over a fixed distance at a fixed altitude.

Pressure Jump: A sudden increase in the observed atmospheric pressure or station pressure.

Pressure Gauge: A water level gauge that is operated by the change in pressure at the bottom of a body of water due to the rise and fall of the water level. See gas purged pressure gauge.

Pressure Characteristic: The pattern of the pressure change during the specified period of time, usually the three hour period preceding an observation. This is recorded in three categories: falling, rising, or steady.

Pressure Altimeter: An aneroid barometer calibrated to indicate altitude in feet instead of units of pressure. It is read accurately only in a standard atmosphere and when the correct altimeter setting is used.

Pressure Altitude: The altitude in standard atmosphere at which a given pressure will be observed. It is the indicated altitude of a pressure altimeter at an altitude setting of 29.92 inches of mercury, and is . . . View Full Definition

Pressure Change: The net difference between the barometric pressure at the beginning and ending of a specified interval of time, usually the three hour period preceding an observation.

Pressure Port: A threaded orifice which can be fitted with a pressure gauge or pressure transducer for determining the pressures within a motor while in operation.

Pressure Relief Valve: A valve used on hot water heating appliances to help keep the pressure in the heated tank or boiler from getting too high by allowing the relief of pressure from the valve.