เครื่องวัดกระแสน้ำ | No | 33871 | |||||||||
เครื่องวัดกระแสน้ำ | By | Cable way | lbs | ||||||||
ยี่ห้อ | OTT | ||||||||||
Model | C 31 "10.002" | ||||||||||
Test certificate by | A-OTT | ||||||||||
1 | Propeller | No | 1 | if n | < | 0.60 | v = | 0.2452n | +0.012 | m/s | |
dia | 0.25 mm | if n | > | 0.60 | v = | 0.2585n | +0.004 | m/s | |||
n | = | 0.60 | v = | 0.2585n | +0.004 | m/s | |||||
เครื่องวัดกระแสน้ำ | by | rod | |||||||||
ยี่ห้อ | OTT | ||||||||||
Model | C 31 "10.002" | ||||||||||
Test certificate by | A-OTT | ||||||||||
1 | Propeller | No | 1 | if n | < | 0.42 | v = | 0.2477n | +0.010 | m/s | |
dia | 0.25 mm | if n | > | 0.42 | v = | 0.2620n | +0.004 | m/s | |||
n | = | 0.42 | v = | 0.2620n | +0.004 | m/s | |||||