| 摘要 |
Woltmann fluid meter with mfg. tolerance measuring error compensation The meter has a rotary turbine wheel supported within a tubular element between upstream and downstream hubs, with at least the upstream hub (1) provided with a regulation device for compensating the measuring error resulting from the mfg. tolerances. A further pivoted regulation device is positioned immediately after the upstream hub, with equi-angularly spaced radial elements (9) projecting into the flow cross-section in the operative position.
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