The rate of decrease of pressure per unit distance at a fixed time.

Is the total pressure (static plus velocity) at the inlet flange of the compressor.

A sudden, significant increase in station pressure.

In spray painting applications, a sealed paint cup with a paint gun which puts a measured amount of air pressure into it. This then forces the paint to the gun for atomization.

Difference between minimum and maximum pressures for an air compressor. Also called cut in-cut out or load-no load pressure range.

The qualified operating pressure which is recommended for a component or a system by the manufacturer.

A valve which enables pressure to be reduced, or kept constant at a desired level.

A device actuated by inlet static pressure and designed to open during an emergency or abnormal condition to prevent a rise of internal pressure in excess of a specified value.

The difference between the discharge pressure and the intake pressure.

The pressure measured in a flowing stream (liquid or gas) in such a manner that no effect on the measurement is produced by the velocity of the stream.

The pressure which overcomes the total resistances in a system. It includes all losses as well as useful work.

The change in barometric pressure within a specified period of time (typically 3 hours for meteorological observations).

The pressure that would be produced by stopping a moving stream of liquid or gas.

The total pressure minus the static pressure in an air or gas stream.

An anemometer which measures wind speed in terms of the drag which the wind exerts on a solid body. See bridled-cup anemometer, normal-plate anemometer, pendulum anemometer.

An anemometer which derives wind speed from measurements of dynamic wind pressures. Wind blowing into a tube develops a pressure greater than the static pressure, while wind blowing across a tube develops a pressure less than the static. This pressure dif ...

The typical winds for a particular region and time of year.

A rope used for additional support or for additional securing, e.g., preventer stay.

Also known as PM, maintenance performed according to a fixed schedule involving the routine repair and replacement of machine parts and components.

A current meter consisting of six conical cups, mounted around a vertical axis, which rotate and generate a signal with each rotation. Tail vanes and a heavy weight stabilize the instrument.