A ring of conducting material which is attached to and rotates with a shaft, so that the electric current may be transferred to a stationary circuit through a fixed brush pressing against it.

Is a wastewater treatment device used to increase the solids concentration in sludge by removing a portion of the liquid fraction, thus reducing the volume of sludge for subsequent processing or disposal.

Is a wastewater treatment device used to increase the solids concentration in sludge by removing a portion of the liquid fraction, thus reducing the volume of sludge for subsequent processing or disposal.

A smart meter is an electronic device that records information—such as consumption of electric energy, voltage levels, current, and power factor—and communicates the information to the consumer and electricity suppliers.

A smart meter is an electronic device that records information—such as consumption of electric energy, voltage levels, current, and power factor—and communicates the information to the consumer and electricity suppliers.

A device that measures and communicates water usage from consumer to provider to facilitate water management and proper billing.

A devices that measure and communicate water usage from consumer to provider to facilitate water management and proper billing.

A detector that is intended to sense smoke.

A detector that is intended to sense smoke.

A block through which a rope can be reeved without access to an end.

A block through which a rope can be reeved without access to an end.

A panel and a photovoltaic module whose main parts are solar cells.

A panel and a photovoltaic module whose main parts are solar cells.

An electromagnetic coil, which is a cylindrical coil, the length of which is much greater than its transverse dimensions and which is used to produce a magnetic field.

An electromagnetic coil, which is a cylindrical coil, the length of which is much greater than its transverse dimensions and which is used to produce a magnetic field.

A valve that has linear action which is fitted with a solenoid for quick operation.

A valve that has linear action which is fitted with a solenoid for quick operation.

An analyser intended to determine a mixture of solid particles in liquids or solid or liquid droplets in air.

An analyser intended to determine a mixture of solid particles in liquids or solid or liquid droplets in air.

Is a materials recovery facility that separates co-collected recyclable materials through automated and manual techniques into groupings of like materials so they can be processed and transported to appropriate remanufacturing destinations.

Is a materials recovery facility that separates co-collected recyclable materials through automated and manual techniques into groupings of like materials so they can be processed and transported to appropriate remanufacturing destinations.