FIELD: measurement equipment.
SUBSTANCE: invention relates to a unit of flow meters, in particular, flow meters for a drink preparation device. A flow meter (1) for a drink preparation device comprises a body (2, 4), which limits a measurement chamber (10) and comprises the first element (4) and the second element (2), which are connected to each other by means of a bayonet connector, having several pairs of connecting fastening parts (25, 25', 25a, 26, 26′, 26a, 45, 45', 45a). Fastening parts (25, 25a, 26, 45, 45a) of each pair have mutually complementary shapes, which provide for their connection, besides, pairs of fastening parts have at least two different types of mutually complementary shapes so that a fastening part (45a) of the pair of the first type is not compatible with the appropriate fastening part (25, 26) of the other type.
EFFECT: increased accuracy and reliability of flow meter assembly.
21 cl, 4 dwg
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