| เครื่องวัดกระแสน้ำ | No | 15877 | ||||||||
| เครื่องวัดกระแสน้ำ | by | rod | ||||||||
| ยี่ห้อ | A-OTT | |||||||||
| Model | C 1 | |||||||||
| Test certificate by | A-OTT | |||||||||
| 1 | Propeller | No | 1 | if n | < | 6.43 | v = | 0.0562n | +0.033 | m/s |
| dia | 50 mm | if n | > | 6.43 | v = | 0.0548n | +0.042 | m/s | ||
| 2 | Propeller | No | 2 | if n | < | 1.27 | v = | 0.0920n | +0.034 | m/s |
| dia | 50 mm | if n | > | 1.27 | v = | 0.0130n | +0.020 | m/s | ||
| 3 | Propeller | No | 3 | if n | < | 0.70 | v = | 0.2203n | +0.038 | m/s |
| dia | 50 mm | if n | > | 2.62 | v = | 0.2459n | +0.020 | m/s | ||
| if n | > | 2.62 | v = | 0.2520n | +0.004 | m/s | ||||
| 4 | Propeller | No | 4 | if n | < | 3.03 | v = | 0.0926n | +0.062 | m/s |
| dia | 30 mm | if n | > | 3.03 | v = | 0.1045n | +0.026 | m/s | ||