FIELD: physics.
SUBSTANCE: vacuum capillary device for determining amount of weakly bound moisture in food products has a protective cover (1) with hatches, a Buchner funnel (3) which is connected in the bottom part to a Bunsen flask (12) by a glass capillary (10) having a measuring scale, and by a vacuum tap (14) and a tube for outlet of air from the Bunsen flask (13). The Buchner funnel (3) is closed by a bell jar (2) and is divided into a top and a bottom part by a partition wall (7), which is attached by a support sealing ring for accommodating at the top a cup made from porous filtering waterproof material (6), the analysed food product sample (4) and a cup made from an air-tight film (5). Both parts of the Buchner funnel and the Bunsen flask are connected by the tube (13) to a vacuum system consisting of a vacuum pump (20), air evacuation (19) and inlet (16) pipes, a manometer (18), a vacuum trap (17) and vacuum taps for controlling air distribution (14, 15). The vacuum taps are driven by electric motors (23, 24) through a mechanical synchronised drive (21). The device also has a control panel (26) with an automatic switch for operation of the electric motors (27), a disc for indicating the operating condition of the device (22) having an indicator pointer, and an electric power supply unit (25).
EFFECT: invention simplifies and accelerates measurement of the amount of weakly bound moisture in food products.
1 dwg
