| เครื่องวัดกระแสน้ำ | No | 553 | ||||||||
| เครื่องวัดกระแสน้ำ | By | by rod | ||||||||
| ยี่ห้อ | SEBA | |||||||||
| Model | M | |||||||||
| Test certificate by | SEBA | year1966 | ||||||||
| 1 | Propeller | No | 50.182 | if n | < | 2.08 | v = | 0.0642n | +0.0154 | m/s |
n |
> | 2.08 | v = | 0.0566n | +0.0307 | m/s | ||||
| n | < | 7.22 | v = | 0.0566n | +0.0307 | m/s | ||||
| if n | > | 7.22 | v = | 0.536n | +0.0539 | m/s | ||||
| 2 | Propeller | No | 100.188 | if n | < | 2.00 | v = | 0.1062n | +0.0115 | m/s |
| if n | > | 2.00 | v = | 0.1059n | +0.0121 | m/s | ||||
| 3 | Propeller | No | 250.565 | if n | < | 1.74 | v = | 0.2473n | +0.0123 | m/s |
| n | > | 1.74 | v = | 0.2568n | -0.0042 | m/s | ||||