Boolean
An artefact and a cooling appliance comprising a thermally insulated compartment and a heat pump-chemical or mechanical means-to transfer heat from it to the external environment, cooling the contents to a temperature below ambient.
A support which is a cylindrical or slightly tapering body of considerably greater length than diameter, erected vertically as a support.
A support which is a cylindrical or slightly tapering body of considerably greater length than diameter, erected vertically as a support.
An instrument that indicates either a) magnetic bearings by alignment of its needle on the magnetic poles, or b) reference bearing by radio signal, or c) change of orientation in relation to a gyromaintained line.
An instrument that indicates either a) magnetic bearings by alignment of its needle on the magnetic poles, or b) reference bearing by radio signal, or c) change of orientation in relation to a gyromaintained line.
A device compensating for axial or radial movement between two elements that is connected.
A device compensating for axial or radial movement between two elements that is connected.
A physical object that is driven by a prime mover by which energy is either constantly or periodically added to an amount of gas in order to increase its pressure.
A physical object that is driven by a prime mover by which energy is either constantly or periodically added to an amount of gas in order to increase its pressure.
A physical object that can store data and program(s) that operates on the data. A general purpose computer can be programmed to solve any reasonable problem expressed in logical and arithmetical terms.
A physical object that can store data and program(s) that operates on the data. A general purpose computer can be programmed to solve any reasonable problem expressed in logical and arithmetical terms.
A transmitter measuring how much of a given substance there is mixed with another substance and transmit a signal proportional to the measured level.
A transmitter measuring how much of a given substance there is mixed with another substance and transmit a signal proportional to the measured level.
A cooler that is intended to change a vapour to liquid.
A cooler that is intended to change a vapour to liquid.
A detecting element or probe that is used with a conductivity meter to measure the conductivity of a liquid.
A detecting element or probe that is used with a conductivity meter to measure the conductivity of a liquid.
A transmitter that is producing a standardized output signal dependent of a received input signal from a conductivity meter.
A transmitter that is producing a standardized output signal dependent of a received input signal from a conductivity meter.
A transmitter that is intended to measure and transmit conductivity.
A transmitter that is intended to measure and transmit conductivity.
A regulator ensuring constant volume in a HVAC system to reduce noise
A regulator ensuring constant volume in a HVAC system to reduce noise
A mechanical switching device having only one position of rest, operated otherwise than by hand, capable of making, carrying and breaking currents under normal circuit conditions including operating overload conditions.
A mechanical switching device having only one position of rest, operated otherwise than by hand, capable of making, carrying and breaking currents under normal circuit conditions including operating overload conditions.