Abstract: Device (1) for checking the calibration of catching instruments measuring rainfall intensity, which comprises a plurality of containers (2a, 2b, 2c) having a predetermined internal volume (V1, V2, V3), the volume of at least two of said containers being different from each other, said containers being intended to contain respective amounts of a liquid, wherein each container (2a, 2b, 2c) is provided with a single exhaust nozzle (3a, 3b, 3c) intended to put the internal volume (V1, V2, V3) of said container (2a, 2b, 2c) in fluid communication with an outer environment such to allow said liquid discharged from said nozzle (3a, 3b, 3c) to flow out by gravity in a substantially horizontal direction, each one of said containers (2a, 2b, 2c) further comprising air intake means (4a, 4b, 4c) intended to put the internal volume (V1, V2, V3) in fluid communication with the outer environment in order to define a compensation of the air pressure inside the container, such to make piezometric head constant at the height o

Abstract: A heating system for hot water and conditioned air uses electromagnetic energy created by one or more magnetrons operated by high voltage transformers. The heating system includes oil cooled transformers and magnetrons. Using radiators in the form of heat exchangers, heat recovered from the transformers and magnetrons is dissipated directly into the path of the return air and the air handler blower. The magnetron heating system includes a coiled conduit sized to allow complete heating of the fluid flowing therethrough. The conduit has a conical shape to allow upper magnetrons to heat the outside of the conduit and lower magnetrons to heat the inside of the conduit.

Abstract: A hot beverage making device includes a boiler for heating water; a housing for accommodating the boiler and connecting element for connecting the boiler to the housing. During operation of the boiler, water is heated and water vapor bubbles are created inside the boiler. Formation of the bubbles causes varying moments about the center of mass of the boiler. The connecting element is adapted to prevent transmittal to the housing of at least a portion of the moment variations. This keeps the noise produced as a result of vibrations of the housing at an acceptable level. In particular, the connecting element is adapted to let the boiler have at least one rotational degree of freedom.