| เครื่องวัดกระแสน้ำ | No | 604 | ||||||||
| เครื่องวัดกระแสน้ำ | By | by rod | ||||||||
| ยี่ห้อ | SEBA | |||||||||
| Model | MI | |||||||||
| Test certificate by | SEBA | year1966 | ||||||||
| 1 | Propeller | dia. | 50 mm | if n | < | 0.0208 | v = | 0.0642n | +0.0154 | m/s |
n |
> | 0.0208 | v = | 0.0568n | +0.0308 | m/s | ||||
| n | < | 0.0722 | v = | 0.0568n | +0.0308 | m/s | ||||
| if n | > | 0.0722 | v = | 0.536n | +0.0539 | m/s | ||||
| 2 | Propeller | dia. | 100 mm | if n | < | 0.02 | v = | 0.1062n | +0.0115 | m/s |
| if n | > | 0.02 | v = | 0.1059n | +0.0121 | m/s | ||||
| 3 | Propeller | dia. | 250 mm | if n | < | 1.74 | v = | 0.2473n | +0.0123 | m/s |
| n | > | 1.74 | v = | 0.2568n | +0.0042 | m/s | ||||