A pressure transmitter where pressure is applied to one side of the sensor while the other side has a vacuum chamber.

A column in which a gas mixture is contacted with a liquid for the purpose of preferentially dissolving one or more components of the gas mixture and to provide a solution of them in the liquid.

A physical object for storing energy, and which after discharge may be recharged.

An enclosure that totally or partially surrounds an item in order to reduce its emitted noise.

A physical object for changing a signal into a corresponding movement.

An electrical connector that is a fixed or free component that permits electrical connection(s) between two or more connectors where direct connection is mechanically impossible.

A physical fluid separator that is based on the principle of attraction exhibited by the surface of a solid for a liquid or a gas when they are in contact.

A physical object that supplies and mixes air to a liquid or solids.

A propeller like device with agitational or rotational movement located in a tank to prevent the content of the tank to build component segments.

An air balancing unit on a nodding donkey.

A circuit-breaker in which the contacts open and close in air at atmospheric pressure.

A physical object that is intended to bring air to a specified quality.

A cooler that is intended to use air as the cooling medium.

An artefact intended for central conditioning and pressure increase of ventilation air.

A trap which, by a water seal, prevents foul air from rising from sinks, wash basins, drains, sewers etc.

A system or device mounted on radio masts, towers and other tall structures intended to assist navigators in determining their position or safe course, or to warn them of dangers or obstructions to navigation.

A physical object that is intended to process and annunciate alarms.

An electric generator for the production of alternating current and voltage.

An electric motor driven by alternating electric current.

A physical object for increasing the power of a signal.

Is an artefact intended to retrieve a material at a particular location and inserted into something so as to test its conditions.

A detecting instrument that is intended to analyse a substance for its composition and/or properties.

A physical object intended to hold an object firmly.

A detecting instrument for recording wind speed, and possibly wind direction.

A physical object that is capable of emitting positive charge carriers to and/or receiving negative charge carriers from the medium of lower conductivity.