发明名称 |
EINSTRAHL- BZW. MEHRSTRAHLFLUEGELRADWASSERZAEHLER MIT DURCHFLUSSJUSTIER- UND REGULIERVORRICHTUNG |
摘要 |
Described is single-jet or multi-jet impeller-type water meter with a device for compensating for errors due to ageing, the device having one or more pipes, or flow-retarding ribs with grooves, located in a measurement chamber. When the meter becomes dirty, the increase in rpm this causes is automatically compensated for since the flow cross-section of the pipes is simultaneously decreased, thus leading to increased throttle losses, or the effective cross-section of the flow-retarding ribs is increased. These devices can also be used for the initial adjustment of the meter.
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申请公布号 |
DE3921021(A1) |
申请公布日期 |
1991.01.10 |
申请号 |
DE19893921021 |
申请日期 |
1989.06.27 |
申请人 |
E. WEHRLE GMBH, 7743 FURTWANGEN, DE |
发明人 |
LANGE, RUDOLF, 3150 PEINE, DE |
分类号 |
G01F;G01F1/06;G01F1/08 |
主分类号 |
G01F |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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