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

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

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 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.

An air compressor skid is a pre-assembled, modular, portable unit consisting of one or more air compressors.

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.

Is a pump with no moving parts that uses a submerged compressed air line to inject air into a vertical discharge pipe in order to create bubbles that reduce the liquid column weight and lifts the liquid to the surface by the air-water buoyancy differential.

Is a dual-function device used in piping systems that releases trapped air automatically during normal operation and prevents vacuum conditions by allowing air to enter the system.

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

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 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.

An electromagnetic transducer that is a physical object made of conducting material which is capable of radiating or receiving electromagnetic waves.