A level transmitter that is producing a standardized electrical output signal based on the input signal from radioactive level measurements.

A level transmitter that is producing a standardized electrical output signal based on the input signal from radioactive level measurements.

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

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 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 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 detectable transmitted energy (e.g. voltage, current, pneumatic or magnetic field strength) by which information can be transmitted.

Is a civil structure and mechanical system built to collect, store, and utilize stormwater or surface runoff.

Is a civil structure and mechanical system built to collect, store, and utilize stormwater or surface runoff.

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

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

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 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 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).

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

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

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.

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.