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水流測(cè)速儀 我有新說法
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TH-LS300-B水流測(cè)速儀夠?qū)崟r(shí)監(jiān)測(cè)水流速度的變化，并快速給出測(cè)量結(jié)果。操作界面直觀易懂，使得用戶能夠迅速掌握使用方法，提高測(cè)量效率和準(zhǔn)確性。

產(chǎn)品介紹：

LS300-B型便攜式流速流量?jī)x（簡(jiǎn)稱便攜式流速儀）是專門為水文站、廠礦、環(huán)保監(jiān)測(cè)站、農(nóng)田排灌、水文地質(zhì)調(diào)查等部門在野外進(jìn)行明渠流速流量測(cè)量而研制的。

LS300-B型便攜式流速流量?jī)x可搭配流速傳感器使用，該傳感器旋漿螺旋角、螺距、制作工藝和材料等分別進(jìn)行了重新設(shè)計(jì)。測(cè)量明渠流速流量等參數(shù)。

設(shè)備清單：

①流速傳感器、②信號(hào)連接器、③流速測(cè)算儀、④充電頭、⑤數(shù)據(jù)線

設(shè)備參數(shù)：

流速測(cè)算儀
名稱參數(shù)
電池6000mAh
充電器5V 2.5A
數(shù)據(jù)接口Type-C
屏幕尺寸2.8寸TFT
數(shù)據(jù)存儲(chǔ)6MB MSC
工作溫度0℃-50℃


流速傳感器
名稱參數(shù)
起轉(zhuǎn)速度0.03m/s
公式范圍0.01—4.00m/s（可到5.00m/s）
供電電壓3.3V
測(cè)算誤差≤1.5%
測(cè)量深度410mm

測(cè)量原理：

流速測(cè)量：流速儀在水力推動(dòng)下，其內(nèi)置信號(hào)裝置產(chǎn)生轉(zhuǎn)數(shù)信號(hào)。從而，可根據(jù)某個(gè)單位時(shí)段內(nèi)流速儀產(chǎn)生的信號(hào)總數(shù)，由以下公式計(jì)算出流速：v=a+b*R/T（m/s）（自動(dòng)計(jì)算）

v一測(cè)流時(shí)段內(nèi)平均流速（m/s）

b一旋槳（或旋杯）水力螺距（m）

a-流速儀常數(shù)（m/s）

T一測(cè)流歷時(shí)（s）

R—T時(shí)段內(nèi)流速儀轉(zhuǎn)子的總轉(zhuǎn)數(shù)

對(duì)某個(gè)個(gè)體流速儀來說，b和a為定值。因此，測(cè)流時(shí),只要測(cè)出T和R值，即可計(jì)算出流速。

流量測(cè)量：輸入被測(cè)斷面類型，并手工輸入（或者通過輔助傳感器測(cè)量）規(guī)則斷面的水位、寬度計(jì)算斷面面積，儀表更具Q=V*S測(cè)算流速Q(mào)值

參考資料

參考資料編輯區(qū)域


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