超聲波多普勒流速儀是一種基于多普勒效應(yīng)原理,利用超聲波測(cè)量水流速度的精密儀器。它通過(guò)超聲波換能器發(fā)射高頻超聲波,當(dāng)超聲波遇到水流中的懸浮顆粒(如泥沙、氣泡)時(shí),反射波頻率因顆粒運(yùn)動(dòng)產(chǎn)生多普勒頻移,設(shè)備通過(guò)分析頻移量與流速的線性關(guān)系,實(shí)現(xiàn)實(shí)時(shí)、非接觸式測(cè)量。推薦型號(hào):【TH-LS6+】
一、產(chǎn)品簡(jiǎn)介
聲學(xué)多普勒流速儀是應(yīng)用于河流、明渠及管道等工況的流速流量檢測(cè)儀器。其采用超聲波探測(cè)技術(shù),測(cè)量精度高、穩(wěn)定性好、受環(huán)境因素影響小,無(wú)轉(zhuǎn)動(dòng)件、維護(hù)頻次低、工作可靠性高,是便攜流速流量測(cè)量的產(chǎn)品。
原理:在聲學(xué)領(lǐng)域中,當(dāng)聲源與接收體(即探頭和反射體)之間有相對(duì)運(yùn)動(dòng)時(shí),回聲的頻率將有所變化,此種頻率的變化稱之為頻移,即多普勒效應(yīng)。聲波頻率在移向觀察者時(shí)變高,遠(yuǎn)離觀察者時(shí)變低。多普勒流速儀通過(guò)計(jì)算頻率變化計(jì)算流速。
二、應(yīng)用領(lǐng)域
海綿城市、河長(zhǎng)制管理、內(nèi)河監(jiān)測(cè)、自然河流、明渠、管道、養(yǎng)殖等場(chǎng)景。
三、主要特點(diǎn)
- 可測(cè)量管道、渠道、天然河流流量、流速、水位。
- 單只流速傳感器,安裝方便適合市政污下水管渠道、不滿管管道、各種渠道、不規(guī)則河道、天然溪、排污口等流量測(cè)量,并可隱蔽安裝,可做到長(zhǎng)期穩(wěn)定工作。
- 可提供瞬時(shí)流量值和累計(jì)流量值。
- 2.8寸彩色屏幕,文本配合圖形,方便操作及流態(tài)分析。☆
- 可存儲(chǔ)一萬(wàn)條數(shù)據(jù),可通過(guò)附贈(zèng)U盤導(dǎo)出數(shù)據(jù)。☆
- 傳感器功耗低:測(cè)流速時(shí)功耗<0.8W。☆
- 中英文操作界面,支持一鍵切換。☆
- 內(nèi)置充電鋰電池,工作時(shí)間超過(guò)8小時(shí)。
- 內(nèi)置壓力式水位傳感器,溫度傳感器。
四、技術(shù)指標(biāo)
參數(shù) | 范圍 | 精度 | 分辨率 |
流速范圍 | 0.020m/s~6.00m/s☆ | ±1.0%±1mm/s | 1mm/s |
水溫測(cè)量 | -10℃~60℃ | ±0.1(℃) | 0.1(℃) |
水深測(cè)量范圍 | 0.03米~10m | 0.3%±0.5cm | 1mm |
瞬時(shí)流量范圍 | 0.001~9999m3/h☆ | ±3% | 0.001m3/s |
累計(jì)流量 | 0.001~9999m3☆ | ±3% | 0.001m3 |
五、性能指標(biāo)
參數(shù) | 范圍 | 備注 |
工作電壓 | 10.0V~12.6V DC |
|
電池容量 | 1800mAh☆ |
|
整機(jī)功耗 | 小于2.4w | 12V供電 |
工作時(shí)長(zhǎng) | 大于8小時(shí) |
|
線纜長(zhǎng)度 | 20m |
|
工作水深 | 小于10m |
|
數(shù)據(jù)更新周期 | 1次/秒☆ |
|
六、使用要求
1. 導(dǎo)氣電纜線含有導(dǎo)氣管,不能過(guò)度彎折,防止其折斷;切忌把導(dǎo)氣電纜當(dāng)流速儀的繩纜,用導(dǎo)氣電纜拖拽多普勒流速儀;
2. 探頭前面的圓形超聲波換能器不能受到?jīng)_擊及劃傷;
3. 儀器探頭應(yīng)避免在太陽(yáng)下長(zhǎng)時(shí)間暴曬,以免溫度太高而引起故障;
4. 在泥沙濃度較大的地方使用聲學(xué)多普勒流量計(jì)要定期清理超聲波換能器和壓力傳感器上的淤泥,防止淤泥把壓力傳感器堵塞。
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■ 功能介紹
★大屏幕液晶顯示具有連續(xù)背景光功能;
★儀器電纜可直接負(fù)重和懸掛兩種方式;
★內(nèi)置大容量數(shù)據(jù)存儲(chǔ)器,容納高達(dá)8000組數(shù)據(jù);","CompanyName":"北京海富達(dá)科技有限公司","CompanyID":"16933","MarketPrice":"-1","PsOrder":"4442","PgID":"89","MaxOrder":"5","CityID":"1","City":"北京市","Address":"北京市","PropertysValue":"","HitNumber":"843","FrontShow":"0","IsCharges":"1","Year":"17","StarNum":"4","UpdateAndClientSort":"48315263","StandUrl":"/st16933","UpdateTime":"2018/10/23 11:43:53","TodayIsUpdate":"0","AttType":"0","AttState":"3","AttAddType":"0","IsSeoCreate":"","IsOnlinePay":"0","MinPrice":"0.00","MaxPrice":"0.00","ClassID":"3138","productonlinetime":"1900/1/1 0:00:00","OnLineDate":"1900/1/1 0:00:00","DownLineDate":"1900/1/1 0:00:00","BrandPicDomin":"","BrandPicName":"","BrandProperty":"","PBrandID":"0","IsHadVideo":"0","VideoTime":"0","ShowPrice":"0.00","IndustrySort":"10824442","HasPicSort":"100330200","UserID":"26596","PriceType":"0","PictureID":"5609650","CompanyTypeID":"3","Tag":"超聲波多普勒流速儀,多普勒流速儀,流速儀","LinkMan":"謝經(jīng)理","TelPhone":"","ClassName":"扭力檢測(cè)儀器","ComProduct":"可訂做各種wph1氣象站,XU61氫擴(kuò)散測(cè)定儀,SWJ鋼尺水位計(jì),XB89筆式PH計(jì),MT02薄膜過(guò)濾器, BH101GH氫氣發(fā)生器,發(fā)煙筆,m210射流萃取器,740污泥濃度計(jì),輻射儀,哈納儀器專賣,克勒儀器","BrandNameCH":"","IsShow":"1","MarketPrice2":"-1","RetailPrice":"-1","ComHitnumber":"1513611","MarketUpdateTime":"2018/10/23 11:43:53","CreateTime":"2010/8/18 15:36:49","Flag":"1","PackageName":"中級(jí)會(huì)員","ClientSort":"0","CsName":"荃荃","Reprint":"","FeedBackMsg":"","EnUrl":"","MobilePhone":"18910282272","LestUpdateTime":"1900/1/1 0:00:00","MostClassID":"0"}]
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