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法蘭式液體渦輪流量計

LWGY系列法蘭式液體渦輪流量計是速度式流量计中的主要种类,当被测流体流过涡轮流量计传感器时，在流体的作用下，叶轮受力旋转，其转速与管道平均流速成正比，同时，叶片周期性地切割电磁铁产生的磁力线，改变线圈的磁通量，根据电磁感应原理，在线圈内将感应出脉动的电势信号，即电脉冲信号，此电脉动信号的频率与被测流体的流量成正比。

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産品簡介 / Introduction

工作原理 / Working principle

流體流經傳感器殼體，由于葉輪的葉片與流向有一定的角度，流體的沖力使葉片具有轉動力矩，克服摩擦力矩和流體阻力之後葉片旋轉，在力矩平衡後轉速穩定，在一定的條件下，轉速與流速成正比，由于葉片有導磁性，它處于信號檢測器（由永久磁鋼和線圈組成）的磁場中，旋轉的葉片切割磁力線，周期性的改變著線圈的磁通量，從而使線圈兩端感應出電脈沖信號，此信號經過放大器的放大整形，形成有一定幅度的連續的矩形脈沖波，可遠傳至顯示儀表，顯示出流體的瞬時流量和累計量。在一定的流量範圍內，脈沖頻率f與流經傳感器的流體的瞬時流量Q成正比，流量方程爲：
Q=3600×f/k

式中：
f－脈沖頻率[Hz]；
K－傳感器的儀表系數[1/m]，由校驗單給出。若以[1/L]爲單位Q=3.6×f/k；
Q－流體的瞬時流量（工作狀態下）[m3/h]；
3600－換算系數；

每台傳感器的儀表系數由制造廠填寫在檢定證書中，k值設入配套的顯示儀表中，便可顯示出瞬時流量和累積總量。

産品優點 / Product advantages

1、高精確度，一般可達±1%R、±0.5%R，高精度型可達±0.2%R；
2、重複性好，如經常校准或在線校准可得到極高的精確度，在貿易結算中是優先選用的流量計；
3、具備儀表系數三點修正，智能補償儀表系數非線性，並可進行現場修正；
4、所有有效數據掉電後保持10年不丟；
5、範圍度寬，中大口徑可達1:20，小口徑爲1:10；
6、結構緊湊輕巧，安裝維護方便，流通能力大；
7、適用高壓測量，儀表表體上不必開孔，易制成高壓型儀表。

技術參數 / Technical parameters

執行標准	渦輪流量傳感器（JB/T9246-1999）
連接方式	螺紋、卡箍、法蘭、夾裝式
精度等級	±1%R、±0.5%R、±0.2%R（需定制）
傳感器材質	304、316不鏽鋼等
使用條件	介质温度：-20℃～+120℃ 环境温度：-20℃～+60℃
使用條件	相对湿度：5%-90% 大气压力：86Kpa～106Kpa
信號輸出功能	脈沖信號、4-20mA信號
通訊輸出功能	RS485通訊、HART協議等
工作電源	外電源：24VDC±15%，紋波≤±5%，適用于4-20mA輸出、脈沖輸出、RS485等
工作電源	內電源：1組3.6V10AH锂電池，電池電壓在2.0-3.0V時均可正常工作
信號線接口	基本型：豪斯曼接頭或自帶三芯線纜；防爆型、內螺紋M20*1.5
防爆等級	Exia II CT或Exd II BT6
防護等級	IP65或更高可定制

産品如何選型 / How to select productss

測量介質、溫度，是否有腐蝕性

流量範圍和用戶管道的內徑

壓力等級

是否現場顯示

工作電源

信號輸出、通訊

是否要防爆

安裝方式

精度等級

應用領域 / Application field

法蘭式液體渦輪流量計广泛用于石油、化工、冶金、科研等领域的计量、控制系统。配备有卫生接头的液体涡轮流量计可以应用于制药行业。

一台滿足各類行業流量測量

石油

化工

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安裝注意事項 / Installation precautions

1、變送器的電源線采用金屬屏蔽線，接地要良好可靠。電源爲直流24V，650Ω阻抗；
2、變送器應水平安裝，避免垂直安裝，並保證其前後有適應的直管段，一般前10D，後5D；
3、保證流體的流動方向與儀表外殼的箭頭方向一致，不得裝反；
4、被測介質對渦輪不能有腐蝕，特別是軸承處，否則應采取措施；
5、注意對磁感應部分不能碰撞。

我們能提供的服務 / The services we can provide

根據需求
推薦選型及報價
一
産品個性化
定制
二
7*24小時
全國服務熱線
三
上門指導
安裝
四

生産過程 / The services we can provide

01 機加工
02 檢驗
03 裝配
04 檢驗
05 噴漆
06 檢驗
07 校驗
08 包裝
09 發貨

青天儀表檢定裝置 / Qingtian instrument verification device

出廠前一對一標定

3毫米-3米 MT质量法水流量标定装置

DN800mm-DN2200mm容積法實流檢定裝置

DN3-DN15mm質量法標定裝置

DN65mm-DN300mm 多台串联质量法实流标定装置

熱品推薦 / Hot product

: 螺紋連接液體渦輪流量計

LWGY螺纹连接涡轮流量计是具有结构简单、轻巧、精度高、复现性好、反应灵敏，安裝维护使用方便等特点的新一代涡轮流量计，广泛用于测量封闭管道中与不锈钢1Cr18Ni9Ti、2Cr13及刚玉Al2O3、硬质合金不起腐蚀作用，且无纤维、颗粒等杂质。

: 夾持型液體渦輪流量計

LWGY法兰夹装式涡轮流量计是具有结构简单、轻巧、精度高、复现性好、反应灵敏，安裝维护使用方便等特点的新一代涡轮流量计，广泛用于测量封闭管道中与不锈钢1Cr18Ni9Ti、2Cr13及刚玉Al2O3、硬质合金不起腐蚀作用，且无纤维、颗粒等杂质。

: 衛生型液體渦輪流量計

卡箍式涡轮流量计是具有结构简单、轻巧、精度高、复现性好、反应灵敏，安裝维护使用方便等特点的新一代涡轮流量计，广泛用于测量封闭管道中与不锈钢1Cr18Ni9Ti、2Cr13及刚玉Al2O3、硬质合金不起腐蚀作用，且无纤维、颗粒等杂质。

: 法蘭式液體渦輪流量計

LWGY系列法蘭式液體渦輪流量計是速度式流量计中的主要种类,当被测流体流过涡轮流量计传感器时，在流体的作用下，叶轮受力旋转，其转速与管道平均流速成正比，同时，叶片周期性地切割电磁铁产生的磁力线，改变线圈的磁通量，根据电磁感应原理，在线圈内将感应出脉动的电势信号，即电脉冲信号，此电脉动信号的频率与被测流体的流量成正比。

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