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

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.

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

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 for recording wind speed, and possibly wind direction.

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

An attenuator is a telecommunication device that reduces the amplitude of a signal without appreciably distorting its waveform. Attenuators are usually passive devices. The degree of attenuation may be fixed, continuously adjustable, or incrementally adjustable.

A physical object that is automatic and designed to initiate the operation of circuit-breakers and/or disconnectors in a substation according to a specific programme.

A dynamic compressor in which the gas is accelerated by the action of a bladed rotor and where the main flow is along the rotation axis of the rotor.

A detecting element that is intended to detect axial displacement.

A transmitter measuring an axial displacement and generating a standardized output signal representing the axial measured displacement.

Is a gas flow damper intended to adjust an air flow rate through a duct.

A ball valve that is equipped with an actuator that manipulates a stream of fluid in the response to a signal from an external sensing element and with input of energy from an external source.

A direct current power supply unit intended to supply stabilised DC electric power according to specified levels and tolerances.

A direct current power supply unit for charging batteries.

A conveyor that consists of a suitably tensioned endless belt made from hard wearing materials and arranged to run over rollers.