A transducer which produces a signal with a defined relationship to the force applied to it.

A physical object that is designed to load or unload products into or from vehicles, wagons or vessels at variable positions.

A data communication system intended for communication between parties in a restricted area.

An electroacoustic transducer that converts an electric signal into sound.

An electrical filter having a single pass-band extending from zero frequency to a specified cut-off frequency.

A physical object that is an electric light and its fittings.

A level gauge that use a float containing a magnet to transfer information about its position to a indicator rail with white and red flaps mounted on the outside of the tube.

A level transmitter which uses a floater and magnetic contacts to measure and transmit level.

A physical object that contains a chamber with several openings.

A manual call point is a device which enables personnel to raise an alarm in the event of a fire incident by pressing a frangible element to activate the alarm system.

A control switch that is operated by a person.

A mechanical controller that is intended to position a given item in accordance with a received input signal.

An 'equipment class' that is a class of devices engaged in meteorological observations.

An 'equipment class' that is a class of devices engaged in meteorological observations

A device that is capable of three-phase metering of liquid, oil and gas.

A gas flow damper that is able to stay in any position between fully open and fully closed.

A switchgear and controlgear that houses motor starters to control electric motors.

An operated valve that is opened and closed with a motor.

An analyser giving as output a signal that represents more than one physical properties of the analysed substance.

A flow meter for the metering a mixture of two or more fluid phases.

A valve not designed to regulate flow (e.g. on/off). A valve with multiple orifices or flow-restriction device to control fluid flow. Includes an actuator that needs auxiliary power to operate.

Is an artefact intended for a number of input channels to share one output channel.

A valve not designed to regulate flow (e.g. on/off). A multi port valve which has the possibility of multiple distinct paths for flow through it. Includes an actuator that needs auxiliary power to operate.

A needle 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 gas flow damper that prevents back flow in a duct.