A detector intended to detect sand in a fluid.

is a conveyer intended to move dry, solid material from one location to another by means of a helix or screw rotating in a cylindrical conduit.

A valve that includes a means of operation (e.g. spring / gravity / fluid pressure / counter balance), and is not depending on an external source of energy.

A tank gauge that is intended to intermittently lower a displacer to measure a liquid level, bottom level, interface level or density.

A vibrating screen for sifting out rock cuttings from drilling mud.

A damper intended for closing off parts of a ventilation system.

An electric signal transducer that is intended to convert one type of standardized transmission signal into another.

A conveyor consisting of a series of slats generally made of metal or wood attached to an endless chain.

A slide 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 physical object that consists of wedge-shaped pieces of metal loosely joined together and fitted into a bushing to support a string of pipe. The slips have gripping elements to prevent the pipe from slipping down the drilling hole.

A detector that is intended to sense smoke.

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

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.

A meter intended to measure a sound pressure level.

An analyser intended to determine specific gravity's of materials. Typically of liquids.

A detecting instrument that is intended to measure the upload and download speed of an internet connection.

A switch intended to give a on/off signal when the speed have reached a pre-set value.

A transmitter that is producing a standardized output signal dependent of a received input signal from a rotational speed sensor.

A physical object that is intended to mix fluid by means of diverging the flow with static obstacles or by increasing locally the velocity.

A thermodynamic turbine in which steam is made to do work by expanding so as to create kinetic energy by acting on moving blades attached to a disc or drum.

An electrical connector capable of withstanding submersion to a specified depth.

A physical object that is protecting against a large but momentary increase in the voltage of an electric circuit.

A check valve that is a check valve where the closure member is a disc which swings freely on a hinge and which opens automatically when flow is established and closes automatically when flow ceases or is reversed.

A switchgear and controlgear bearing a set of switches for connecting and disconnecting the various circuits of an electrical system, as of a telegraph, telephone, etc.