A mill that uses pressure or impact to reduce the particle size of solid materials.
A signal converter that is intended to convert one current signal to another current signal.
A signal converter that is intended to convert an analogue signal (4 - 20 mA) to a proportional linear pneumatic output signal.
A signal converter that is intended to convert a current input signal to a proportional voltage output signal.
An instrument transformer in which the secondary current, in normal conditions of use, is substantially proportional to the primary current and differs in phase from it by an angle which is approximately zero for an appropriate direction of the connections.
A transmitter that transmits an analogue electrical current.
A device that damps, typically a valve or plate (as in the flue of a furnace) for regulating the draft, or a device to stop vibration, typically a shock absorber or snubber.
A device that removes air or gases (methane, H2S, CO2 and others) from drilling liquids.
A control valve that is intended to operate at high temperature, and admit water into a deluge system.
An analysing instrument intended to determine the density of a substance.
An analysing instrument intended to determine the dew point of a substance.
A facility for measuring dew point and transmitting a signal representing the measured temperature.
A diaphragm 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 flow transmitter providing an output signal that is proportional to the flow inputs from a differential pressure flow meter.
A gauge that is intended for measuring and indicating pressure differences.
A level transmitter that is measuring liquid level by sensing pressure difference between two points, e.g. the hydrostatic pressure at the bottom of a tank to the atmosphere pressure.
A pilot switch intended to switch or give an on/off signal when the measured differential pressure has reached a pre-set value.
A pressure transmitter that is producing a standardized output signal dependent of a received pressure difference signal.
A direct digital controller is an electronic device that uses a microprocessor for closed loop control of a process by reading inputs from sensors, computing the required outputs, and signaling the actuators accordingly without converting signals to analog.
A level transmitter which uses a displacer as sensing element.
An analyser intended to determine the relation between the boiling temperatures and the fraction distilled. It includes the initial boiling point and the final boiling point.
A physical object that is an opening in a barrier and a removable physical object that can block the opening.
A physical channel that acts as a conduit for fluids, gases, pipes or cables to transfer from one point to another.
A 'detector' for measuring the velocity, mass, charge, flight direction, and number of dust particles in space.
A detector intended to detect a leakage current to earth.