A signal at a railway grade crossing that indicates the approach of a Locomotive.

A safety system to govern the use of single rail tracks to ensure only one locomotive can use the track at any one time. The rail key token station controls the issue of key tokens permitting movement.

A physical object that consists of two parallel steel rails, generally anchored perpendicular to beams or railroad ties of timber, concrete, or steel to maintain a consistent distance apart, to facilitate transport on the rails with vehicles arranged in a train without the need for steering.

A sloping surface joining two different levels, as at the entrance or between floors of a building.

Is a piece of hardware intended to read and decode information encoded on a carrier.

A positive displacement compressor in which forced reduction of gas volume takes place by the movement of a displacing element in a cylinder or enclosure.

A positive displacement pump which contains a displacing element intended to be moved in a reciprocating movement to exert pressure on a fluid, typically moving within a cylindrical space.

A process instrument that records values represented by the input signal(s).

An electric converter for converting an alternating current into a direct current.

A recuperator is a special purpose counter-flow energy recovery heat exchanger positioned within the supply and exhaust air streams of an air handling system, or in the exhaust gases of an industrial process, in order to recover the waste heat.

An analyser intended to determine the oxidation and reduction capability of material.

A pressure transmitter where pressure is applied to one side of the sensor while the other side is open to atmosphere. The transmitter generate standardized output signal representing the measured value.

A physical object that can be any electrical device, usually incorporating an electromagnet, whereby a current or signal in one circuit can open or close another circuit.

A self operating valve that is set to open at a certain pressure level to prevent the pressure in a container or system from reaching unsafe levels.

A RTU, or Remote Terminal Unit is a device which interfaces objects in the physical world to a DCS or SCADA system by transmitting telemetry data to the system and/or altering the state of connected objects based on control messages received from the system.

A process control unit that can be operated in remote.

A rescue boat designed for rescuing personnel.

Assigned for living and accommodation.

A temperature sensing element that operate on the principle of changes in electrical resistance of pure metals (sintered semiconductor material) and are characterized by an almost linear positive change in resistance with temperature.

An orifice plate that is intended for use as a restrictor.

Vertical structure used to resist the lateral pressure of the ground and maintains structural integrity.

A rigid vertical or near vertical pipe for the flow of liquid or gas between the seabed and the surface.

A physical object that is a totally sealed, gas-insulated compact switchgear unit. The primary switching devices can be either switch disconnectors or fused switch disconnectors or circuit breakers.

A physical object that is a vertical or near vertical pipe for the upward flow of liquid or gas.

A support connecting a riser to a structure.