FIELD: machine building.
SUBSTANCE: proving device for flow metre of low-temperature media includes low-temperature fluid media supply pipeline, inlet and outlet, which are provided with possibility of being connected to pipeline, flow tube and displacer. At that, flow tube is equipped with a channel and has the possibility of receiving low-temperature fluid media and is installed between inlet and outlet. Displacer is installed so that it can be moved in channel and has the possibility of receiving low-temperature fluid media. Proving device also includes at least one magnetic measuring coil and a pair of receivers-transmitters connected to flow tube and to displacer. Channel is equipped with inner surface made by means of microfinishing with possibility of retaining fluid medium microfilm for lubrication.
EFFECT: providing direct calibration using low-temperature products and improving accuracy.
28 cl, 8 dwg
