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.

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.

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 circuit-breaker in which the contacts open and close in oil.

A mist detector that is intended to detect oil mist.

an element designed to measure an oxidation reduction potential (ORP).

One-way communications device in which the intended receiver is alerted to receive a message or return a phone call.

An internal combustion engine that is an induction compression ignition exhaust engine which ignites a petrol air mixture with an electric spark.

An analysing instrument intended to measure, indicate and/or produce a signal which represents the measured alkalinity / acidity in a fluid or matter.

an element designed to measure pH (potential of Hydrogen).

A detector that is intended to detect a pig inside the pipeline or pig receiver.

A transmitter intended to detect a pig passage and transmit a signal representing the measured value.

A differential pressure flow meter utilizing a pitot tube (a probe with an open tip) that is inserted into the flow field.

A control valve that is also a plug valve and an actuated valve.

An actuator that is intended to be operated by pneumatic power.

A mechanical controller that is using pneumatic components to execute its function.

A pilot switch the actuating system of which is operated by a moving part of a machine, when this part reaches a predetermined position.

A transmitter that is producing a standardized output signal dependent of a received input signal from a position detector.

Elements like impellers rotating by the pressure of the fluid in a closed conduit to measure the flow of a liquid.