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

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.

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 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 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.

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 variable area flow meter which consists of a tapered tube of glass with a float inside that is pushed up by flow and pulled down by gravity.

A positive displacement compressor in which compression displacement is effected by the positive action of rotating elements.

A positive displacement pump that consists of a chamber containing gears, cams, screws, vanes, plungers or similar elements actuated by relative rotation of the drive shaft or casing and which has no separate inlet and outlet valves.

A detecting element that is intended to sense rotational speed.

A router is a computer networking device that forwards data packets toward their destinations through a process known as routing. Routing occurs at layer 3 (Network layer) of the OSI seven-layer model.

Safety barriers are devices that limit the current, voltage, and total energy delivered to a sensor in a hazardous area or flammable environment in order to prevent an explosion.

A sample loop adds a predetermined volume to the process.

A physical object intended to be used to collect and contain representative specimens or selections.

A detector intended to detect sand in a fluid.

A system that provides voice and telefax communication via satellites.

A manual control switch which has more then two possible positioning states.

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 tubular heat exchanger in which a tube bundle is surrounded by a shell.