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熱門關鍵詞：超聲波液位計電磁流量計超聲波流量計渦街流量計金屬管浮子流量計

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法兰夹装渦街流量計

LUGB法兰夹装式渦街流量計是一种常用的结构形式，其表体自身不带连接法兰，在与管道连接时，将流量计夹装于两片专用法兰之间，再用螺栓紧固即可。其特点是体积小，结构简单紧凑。同时提供专用法兰和紧固螺栓，故安裝费用低，安裝也非常方便。

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産品簡介 / Introduction

産品優點 / Product advantages

安裝簡便，維護十分方便；
結構簡單牢固，無可動部件，長期運行十分可靠；
量程範圍寬，量程比可達1：15；
壓力損失小，運行費用低，更具節能意義；
應用範圍廣，液體、氣體、蒸汽均可測量；
檢定周期長，一般爲兩年；
在一定雷諾數範圍內，輸出信號不受被測介質物理性質和組分變化的影響，儀表系數僅與旋渦發生體的形狀和尺寸有關，調換配件後一般無須重新標定儀表系數；
可現場顯示，也可遠距離傳輸，還可與計算機控制系統聯網；
檢測探頭不直接接觸被測介質，性能更穩定。

技術參數 / Technical parameters

性能	技術參數
測量介質	蒸汽、壓縮空氣、液體（單相介質）
介質溫度	-40℃～+350℃
介質壓力	1.6、2.5、4.0Mpa
量程比	1：8～1-30（參比標況下空氣）1：8～1：40（參比常溫水）
測量範圍	液体0.4～0.7m/s 气体4.0～60m/s 蒸汽5.0～70m/s
規格	DN25～DN300mm
材質	304、316L多种材質
雷諾數	正常2104Cd～7106
阻力系數	Cd≤2.6
振動加速度	LUGB型≤0.2g
防護等級	IP65
防爆等級	（ia) II CT6
精度	1.0級、1.5級
環境條件	環境溫度	-40℃～+55℃（非防爆場所）-20℃～+55℃（防爆場所）
	相對濕度	≤85%
	大氣壓力	86～106Kpa
供電電源	非防爆型	脈沖型	+12VDC 20mA
		電流型	+24VDC 20mA
輸出信號	频率脉冲信号2～3000Hz 低电平≤1V 高电平≥6V
	二线制4-20mA信号（隔离输出）负载≤500Ω

産品如何選型 / How to select productss

渦街流量計的选型，主要确认下面几点参数要求：

01.測量介質

渦街流量計是一种速度式流量计，它利用的卡门涡街的原理，当介质通过漩涡发生体的时候，会在后面形成一个个小漩涡，通过漩涡的个数，就可以换算成介质的流速，继而换算成介质的流量。它的原理，决定了它的測量介質类型，可以是液体，也可以是气体或蒸汽。目前，绝大多数工业场合，比如氮气，压缩空气，蒸汽，导热油等，多是采用的渦街流量計来测量。

02.管道口徑

渦街流量計按照安裝方式的不同，可以分管道式和插入式安裝。对于管道式来说，管道口径和大多数其他流量计一样，小的是DN15，大的话，则是可以到达DN300。如果需要更大的口径的话，可以选择插入式安裝，常规口径范围大可以到达DN2000，DN2000以上口径则按照协议供货。

03.測量精度

渦街流量計的精度也有好几个等级，而且是按照測量介質来分的。管道式的渦街流量計，如果是测液体的话，测量精度可以达到1.0级，测气体的话，精度可以达到1.5级。如果是插入式的渦街流量計，精度可以达到1.5级和2.5级。

04.介質溫度

通常来说，分为三个范围，分为常温，中温和高温。温度范围分别是-40～100℃(常温)、100～250℃(中温)、100～320℃(高温)。如果现场介質溫度更高的话，比如说一些过热蒸汽，可以用孔板流量计来测量。

05.公稱壓力

主要是按照安裝方式來分，市場上主要需求如下幾類，例如法蘭卡裝型(2.5MPa)、法蘭連接型(1.0/1.6/2.5MPa)，插入式安裝型(1.6MPa/2.5MPa/4.0MPa)。

06.供電電源

按照目前市場上需求，主要有+12VDC(三線制脈沖輸出)、+24VDC(三線制脈沖輸出型及二線制電流輸出型)3.6V锂電池、雙供電。

07.輸出信號

按照目前市場上需求，主要有電壓頻率脈沖輸出、兩線制4-20mA輸出和HART輸出。另外，有些場合可能需要數字量輸出，我們也能提供modbus的RS485通訊。

應用領域 / Application field

法兰夹装渦街流量計应用于石油、化工、冶金、机械、食品、造紙，以及城市管道供热、供水、煤氣等行业的各种低黏度液体、气体、蒸汽等单相流体的工艺计量和节能管理。

一台滿足各類行業流量測量

石油

化工

冶金

煤氣

供水

造紙

安裝注意事項 / Installation precautions

街流量儀表属于精密仪表，仪表应选择安裝在干燥、通风、灰尘少的地方；
1、使用测量蒸汽的渦街流量計，表体、管道一定要加保温，法兰要夹紧，不得有漏气的地方，否则仪表很容易损坏；
2、儀表安裝最好選擇在室內，遠離震動及有較強電磁幹擾的地方。如在室外，可將表頭加以保護；
3、儀表前最少要有10-15倍的直管段，後要有5倍以上的直管段。選擇安裝地方要便于安裝、接線、調試；
4、最好有一段直管段，在安裝前先將兩片法蘭焊接好，再將儀表裝好夾緊，將管道切掉等長直管，然後將之前焊接好的整體表加以安裝。切忌不要將表夾在法蘭上焊接。

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 裝配
02 標定
03 出廠檢驗
04 包裝
05 發貨

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

出厂前一对一標定

3毫米-3米 MT质量法水流量標定装置

DN800mm-DN2200mm容積法實流檢定裝置

DN3-DN15mm质量法標定装置

DN65mm-DN300mm 多台串联质量法实流標定装置

熱品推薦 / Hot product

: 法兰连接式渦街流量計

渦街流量計是根据卡门涡街原理研究生产的测量气体、蒸汽或液体的体积流量、标况的体积流量或质量流量的体积流量计。主要用于工业管道介质流体的流量测量，如气体、液体、蒸汽等多种介质。

: 法兰夹装渦街流量計

LUGB法兰夹装式渦街流量計是一种常用的结构形式，其表体自身不带连接法兰，在与管道连接时，将流量计夹装于两片专用法兰之间，再用螺栓紧固即可。其特点是体积小，结构简单紧凑。同时提供专用法兰和紧固螺栓，故安裝费用低，安裝也非常方便。

: 插入式渦街流量計

插入式渦街流量計的优点是抗振性能特别好，无零点漂移，可靠性高。通过长时间对渦街流量計进行的大量波形分析和频谱分析，设计出更佳的探头形状、壁厚，高度、探头杆直径及与之相配套的压电晶体，采用先进的数控车床进行加工，确保加工的同轴度和光洁度等技術參數，配合特殊的工艺处理，从而克服渦街流量計存在的固有自振荡频率对信号的影响这个通病。

: 卡箍连接式渦街流量計

卡箍连接式渦街流量計克服了一般流量计接头需要在连接盘上匀布螺栓孔，使用螺栓、螺母将连接盘固定在管道上，造成使用成本高、操作麻烦、效率低的弊端，而改采用横切面为直角梯形的连接盘，内侧为直角梯形斜边，使用时，利用卡箍将连接盘紧固在管道上，使用成本低，省时省力。卡箍式流量计主要应用于油田等高复杂度的工作场合。

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法兰夹装渦街流量計

石油

化工

冶金

煤氣

供水

造紙

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