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E+H渦街流量計

E+H流量計

E+H電磁流量計E+H E+H質(zhì)量流量計E+H E+H渦街流量計E+H E+H超聲波流量計E+H

E+H流量儀表：1、E+H電磁流量計：提供了高量程比的高精度測量�？捎糜趪栏竦男l(wèi)生場合，并提供適用于危險場合的安全認證。型號有:50W/53W,50P/53P,50H/53H,10W,10H,10P,23H,23P,55S/55H55S電磁流量計 55H電磁流量計

2、E+H渦街流量計：用來測量氣體、蒸氣和液體的流量。安裝成本低，壓損小，長時間穩(wěn)定性及寬動態(tài)測量范圍。主要型號有:72F,73F,72W Prowirl 72W渦街流量計 Prowirl 72F渦街流量計 Prowirl 73F渦街流量計 Prowirl 73W渦街流量計

3、E+H熱式質(zhì)量流量計：用來測量氣體的流量，操作簡便，無壓損及寬動態(tài)測量范圍。主要型號有:80/83F,80/83E,80/83H,80/83M,80/83A,80/83I,40E,84F,84M 84F質(zhì)量流量計 84A質(zhì)量流量計 84M質(zhì)量流量計 CNGmass質(zhì)量流量計 40E質(zhì)量流量計

4、E+H超聲波流量計：外部安裝，非接觸測量。安裝簡便，不干擾工藝過程，適用于腐蝕性介質(zhì)，高壓、衛(wèi)生場合。型號有: 90/93W,93/90A,90/93U/C93T超聲波流量計 92F超聲波流量計

E+H（恩德斯豪斯）t-switch 熱式氣體流量測量 E+H（恩德斯豪斯）t-trend 熱式氣體流量測量 E+H（恩德斯豪斯）能量計算儀 RMC 621 E+H（恩德斯豪斯）能量計算儀 RMS 621 E+H（恩德斯豪斯）Magphant 插入式電磁流量計 E+H（恩德斯豪斯）Memo-graph 可視數(shù)據(jù)管理器 E+H（恩德斯豪斯）RIA 250 過程顯示儀 E+H（恩德斯豪斯）RIA 251 過程顯示儀 E+H（恩德斯豪斯）RIA 450 過程指示儀 E+H（恩德斯豪斯）t-mass S AT70熱式氣體流量測量

E+H能量計算儀RMC621/RMS621

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該公司產(chǎn)品分類： RBT ABB VEGA P+F 倍加福 FESTO 費斯托 E+H

組合型與分離型渦街流量傳感器傳感器

渦街流量傳感器是可以兼顧測量液體，氣體和蒸汽的儀表。包括輸出脈沖信號的轉(zhuǎn)換器和輸出4～20mA模擬信號的變送器，并按轉(zhuǎn)換器與傳感器的安裝形式分為組合型與分離型兩種。組合型渦街流量傳感器結(jié)構(gòu)如(圖1）分離型渦街流量傳感器其結(jié)構(gòu)如(圖2）

Vortex美國Aalborg渦街流量計/渦輪流量計

渦街流量計的基本原理是卡門渦街現(xiàn)象，當(dāng)流體環(huán)繞通過一個非流線型的柱體時將產(chǎn)生漩渦，漩渦在柱體的兩側(cè)交替產(chǎn)生。因此產(chǎn)生了一個周期性的壓力脈沖，產(chǎn)生漩渦的頻率與流量的大小成線性比例關(guān)系。Aalborg公司的獨特的雙信號處理技術(shù)單獨測量柱體兩側(cè)的漩渦，同時過濾干擾信號。因此在全量程范圍內(nèi)具有較高的測量精確度和抗干擾能力。

特點:性：無可移動部件電路部分與表體可以分體式安裝，最長距離可達30.5米（100英尺）傳感器不接觸測量介質(zhì) 無可阻塞孔寬量程比：最大量程比可達80：1 雙信號處理技術(shù)提高了小流量精確度高精度：0.5%讀數(shù)精度雙信號處理技術(shù)提高了抗干擾能力

性能特性:

型號：VX

測量范圍：0-100000（m3/h）精度：0.5%讀數(shù)重復(fù)性：0.25%讀數(shù)

工作溫度：-73-232（℃）

工作壓力：10（MPa）響應(yīng)時間：0.5 S阻尼：1…10 S 可調(diào)整速度范圍：液體 0.4…9.15 m/s 蒸汽和氣體認證：FM及CSA 1 Div 2 Groups B,C,D.

物理特性結(jié)構(gòu)材質(zhì)漩渦發(fā)生體：304 SS 或 316 SS電極：304 SS 或 316 SS 封裝陶瓷測量管：304 SS 或 316 SS法蘭：304L SS 或316L SS.表頭殼體：環(huán)氧涂層鋁連接和安裝安裝位置：垂直，水平，傾斜直管段要求：上游 20D 下游 5D溫度傳感器：下游 3.5D壓力傳感器：上游 3.5D過程連接：法蘭夾持法蘭連接標準 ANSI,DIN電氣接口：3/4’’ FNPT

電子特性環(huán)境溫度：-12℃…121℃變送器：基于微處理器顯示：2＊16 字符顯示同時顯示順時流量和累積流量功能：零點，滿量程，上限切除，下限切除，響應(yīng)時間，采集時間工程單位，累積器，數(shù)據(jù)記錄，RS232 輸出信號：4…20 mA 阻抗小于600 Ω 5 V TTL脈沖輸出防護等級：NEMA 4X防爆認證：UL, CSA, FM, Class I Groups B, C, D Class II Groups E, , KEMA/CENELEC EEx d IIB電源：15…30 VDC,115VAC,230VAC（可選）

LT-LUB智能渦街流量計

智能渦街流量計

LT-LUB智能渦街流量計原理在流體中設(shè)置三角柱型旋渦發(fā)生體，則從旋渦發(fā)生體兩側(cè)交替地產(chǎn)生有規(guī)則的旋渦，這種旋渦稱為卡門旋渦，如右圖所示，旋渦列在旋渦發(fā)生體下游非對稱地排列。設(shè)旋渦的發(fā)生頻率為f，被測介質(zhì)平均流速為，旋渦發(fā)生體迎流面寬度為d，表體通徑為D，即可得到以下關(guān)系式： f=SrU1/d=SrU/md 　　　　　　　　　　　　　　　　　　　�。�1）式中　　U1－－旋渦發(fā)生體兩側(cè)平均流速，m/s； Sr－－斯特勞哈爾數(shù)； m－－旋渦發(fā)生體兩側(cè)弓形面積與管道橫截面面積之比管道內(nèi)體積流量qv為 qv=πD2U/4=πD2mdf/4Sr 　　　　　　　　　　　　　　　　（2） K=f/qv=[πD2md/4Sr]-1 　　　　　　　　　　　　　　　　（3）式中 K－－流量計的儀表系數(shù)，脈沖數(shù)/m3（P/m3）。 K除與旋渦發(fā)生體、管道的幾何尺寸有關(guān)外，還與斯特勞哈爾數(shù)有關(guān)。斯特勞哈爾數(shù)為無量綱參數(shù)，它與旋渦發(fā)生體形狀及雷諾數(shù)有關(guān)，圖2所示為圓柱狀旋渦發(fā)生體的斯特勞哈爾數(shù)與管道雷諾數(shù)的關(guān)系圖。由圖可見，在ReD=2×104～7×106范圍內(nèi)，Sr可視為常數(shù)，這是儀表正常工作范圍。當(dāng)測量氣體流量時，VSF的流量計算式為（4）圖2 斯特勞哈爾數(shù)與雷諾數(shù)關(guān)系曲線式中 qVn，qV－－分別為標準狀態(tài)下（0oC或20oC，101.325kPa）和工況下的體積流量，m3/h； LT，P－－分別為標準狀態(tài)下和工況下的絕對壓力，Pa； Tn，T－－分別為標準狀態(tài)下和工況下的熱力學(xué)溫度，K； LT，Z－－分別為標準狀態(tài)下和工況下氣體壓縮系數(shù)。由上式可見，VSF輸出的脈沖頻率信號不受流體物性和組分變化的影響，即儀表系數(shù)在一定雷諾數(shù)范圍內(nèi)僅與旋渦發(fā)生體及管道的形狀尺寸等有關(guān)。但是作為流量計在物料平衡及能源計量中需檢測質(zhì)量流量，這時流量計的輸出信號應(yīng)同時監(jiān)測體積流量和流體密度，流體物性和組分對流量計量還是有直接影響的。渦街流量計便是依據(jù)卡門旋渦原理進行封閉管道流體流量測量的新型流量計。因其具有良好的介質(zhì)適應(yīng)能力，無需溫度壓力補償即可直接測量蒸汽、空氣、氣體、水、液體的工況體積流量，配備溫度、壓力傳感器可測量標況體積流量和質(zhì)量流量，是節(jié)流式流量計的理想替代產(chǎn)品。為提高渦街流量計的耐高溫及抗振動性能，我公司新近開發(fā)出了SDLU改進型渦街流量傳感器，因其獨特的結(jié)構(gòu)和選材使該傳感器可在高溫（350℃）、強振動（≤1g）的惡劣工況下使用。在實際應(yīng)用中，往往最大流量遠低于儀表的上限值，隨著負荷的變化，最小流量又往往會低于儀表的下限值，儀表并非工作在它的最佳工作段，為了解決這一問題，通常采用在測量處縮徑提高測量處的流速，并選用較小口徑的儀表以利于儀表的測量，但是這種變徑方式必須在變徑管與儀表間有長度為15D以上的直管段進行整流，使加工、安裝都不方便。我公司研制的縱斷面形狀為圓弧的LGZ變徑整流器，具有整流、提高流速及改變流速分布多重作用，其結(jié)構(gòu)尺寸小，僅為工藝管內(nèi)徑的1/3，與渦街流量計作成一體，不僅不需要另外附加一段直管段，還可以降低對工藝管直管段的要求，安裝非常方便。為了使用方便，電池供電的本地顯示型渦街流量計采用微功耗高新技術(shù)，采用鋰電池供電可不間斷運行一年以上，節(jié)省了電纜和顯示儀表的采購安裝費用，可就地顯示瞬時流量、累積流量等。溫度補償一體型渦街流量計還帶有溫度傳感器，可以直接測量出飽和蒸汽的溫度并計算出壓力，從而顯示飽和蒸汽的質(zhì)量流量。溫壓補償一體型帶有溫度、壓力傳感器，用于氣體流量測量可直接測量出氣體介質(zhì)的溫度和壓力，從而顯示氣體的標況體積流量。 ◆測量介質(zhì)：氣體、液體、蒸氣 ◆口徑規(guī)格法蘭卡裝式口徑選擇25,32,50,80,100 ◆法蘭連接式口徑選擇100,150,200 ◆流量測量范圍正常測量流速范圍?雷諾數(shù)1.5×104～4×106；氣體5～50m/s;液體0.5～7m/s 正常測量流量范圍液體、氣體流量測量范圍見表2；蒸氣流量范圍見表3 ◆測量精度1.0級? 1.5級 ◆被測介質(zhì)溫度:常溫–25℃～100℃ ◆高溫–25℃～150℃ -25℃～250℃ ◆輸出信號脈沖電壓輸出信號高電平8～10V 低電平0.7～1.3V ◆脈沖占空比約50%,傳輸距離為100m ◆脈沖電流遠傳信號4～20 mA,傳輸距離為1000m ◆儀表使用環(huán)境溫度:-25℃～+55℃ 濕度:5～90% RH50℃ ◆材質(zhì)不銹鋼, 鋁合金 ◆電源DC24V或鋰電池3.6V ◆防爆等級本安型iaIIbT3-T6 防護等級IP65 智能渦街流量計產(chǎn)品選型

代號	通徑	流量范圍㎡/h
LT-LUB-25	DN25	1~10（液體）			25~60（氣體）			蒸汽流量請查看說明書，DN300以上推薦使用插入式渦街流量計
LT-LUB-32	DN32	1.5~18（液體）			15~150（氣體）
LT-LUB-40	DN40	2.2~27（液體）			22.6~150（氣體）
LT-LUB-50	DN50	4~55（液體）			35~350（氣體）
LT-LUB-80	DN80	9~135（液體）			90~900（氣體）
LT-LUB-100	DN100	14~200（液體）			140~1400（氣體）
LT-LUB-150	DN150	32~480（液體）			300~3000（氣體）
LT-LUB-200	DN200	56~800（液體）			550~5500（氣體）
	代號	功能1
	N	無溫壓補償
	Y	有溫壓補償
		代號	輸出型號
		F1	4-20mA輸出（二線制）
		F2	4-20mA輸出（三線制）
		F3	RS485通訊接口
			代號	被測介質(zhì)
			J1	液體
			J2	氣體
			J3	蒸汽
				代號		連接方式
				L1		法蘭卡裝式
				L2		法蘭連接式
						代號	功能2
						E1	1.0級
						E2	1.5級
						T1	常溫
						T2	高溫
						T3	蒸汽
						P1	1.6MPa
						P2	2.5MPa
						P3	4.0MPa
						D1	內(nèi)部3.6V供電
						D2	DC24V供電
						B1	不銹鋼
						B2	碳鋼

渦街流量計的優(yōu)點 LT-LUB-智能渦街流量計的最大優(yōu)點是抗振性能特別好，無零點漂移，可靠性高。通過長時間對渦街流量計進行的大量波形分析和頻譜分析，富沃得設(shè)計出了最佳的探頭形狀、壁厚，高度、探頭桿直徑及與之相配套的壓電晶體，采用先進的數(shù)控車床進行加工，確保加工的同軸度和光潔度等技術(shù)參數(shù)，配合特殊的工藝處理，從而最大限度的克服渦街流量計存在的固有自振蕩頻率對信號的影響這個通病。這是富沃得公司在制作渦街流量計方面的技術(shù)獨特優(yōu)勢，使得富沃得公司出廠的渦街流量計具有量好的抗振動能力。 ②FFM63系列智能渦街流量計的傳感器的通用性很強，從而使傳感器具有良好的互換性采用先進數(shù)控設(shè)備加工傳感器的表體和旋渦發(fā)生體等，確保加工精度，從而使零部件（特別是旋渦發(fā)生體）的通用性強，從而真正做到不會因零部件的更換而影響傳感器的重復(fù)性和精度；能產(chǎn)生強大而穩(wěn)定的渦街信號。 ③結(jié)構(gòu)簡單牢固，無可動部件，可靠性高，使用維護方便。 ④檢測元件不與介質(zhì)接觸，性能穩(wěn)定，使用壽命長傳感器采用檢測探頭與旋渦發(fā)生體分開安裝，而且耐高溫的壓電晶體密封在檢測探頭內(nèi)，不與被測介質(zhì)接觸，所以FFM63系列渦街流量計具有結(jié)構(gòu)簡單、通用性好和穩(wěn)定性高的特點。 ⑤輸出與流量成正比的脈沖信號或模擬信號，無零點漂移，精度高，方便與計算機聯(lián)網(wǎng) ⑥測量范圍寬，量程比可達1：10 ⑦渦街流量計測量體積流量時不需補償，渦街輸出的信號實際上是與流速成線性關(guān)系的，也就是與體積流量成正比。壓力和溫度補償?shù)哪康氖菫榱说玫搅黧w的密度，乘以體積流量就得到質(zhì)量流量，若測量氣體的體積流量就不需要補償了。 ⑧壓力損失小。用口徑DN50的渦街流量計測量可燃氣體的流量，若管道內(nèi)的最大流量Qmax ＝200m3/h時，傳感器的壓力損失是：△P ＝1.08×10-6 ρv2（kPa）= 0.605 KPa ⑨在一定的雷諾數(shù)范圍內(nèi)，流量特性不受流體壓力、溫度、黏度、密度、成分的影響，僅是與旋渦發(fā)生體的形狀和尺寸有關(guān)。 ⑩應(yīng)用范圍廣，蒸汽、氣體、液體流量均可測量。渦街流量計的技術(shù)參數(shù) ●測量流體：飽和蒸汽、過熱蒸汽、氣體、液體（避免多相流） ●測量準確度及重復(fù)性：

測量流體	準確度	重復(fù)性
氣體（含蒸汽）	1.0級	0.33%
液體	1.5級	0.5%

●測量范圍

測量流體	流速下限（m/s）	流速上限（m/s）
氣體（含蒸汽）	7	70
液體	0.7	7

●額定壓力：1.6MPa、2.5MPa、6.3MPa ●流體溫度：-40℃～250℃（普通型），100℃～350℃（普通型） ●結(jié)構(gòu)類型：一體型渦街流量計 ●結(jié)構(gòu)材質(zhì)

部件名稱	材質(zhì)
傳感器表體	304不銹鋼、316不銹鋼
旋渦發(fā)生體	304不銹鋼、316不銹鋼
檢測探頭	316L
連桿	304不銹鋼
散熱器	鋁合金
墊片	耐高溫石棉墊、丁晴橡膠墊片、石墨墊片

●工作電源

第一種電源方式	3.6V鋰電池供電（就地顯示型）
第二種電源方式	24VDC（或12VDC）
第二種電源方式	24VDC（或12VDC）或3.6V鋰電池供電雙電源供電

●輸出信號：脈沖輸出、4～20mA 電流輸出，RS485通訊等三種輸出可供選擇 ●電氣接口：M20*1.5 ●防護等級：IP65 ●表體處理：傳感器表體采用不銹鋼噴砂，放大器外殼采用噴塑。 ●環(huán)境溫度：-35℃～60℃（無LCD）、-5℃～60℃（帶LCD） ●相對濕度：5%～95℃ 渦街流量計的安裝要求渦街流量計有許多種結(jié)構(gòu)形式，安裝、維修人員需要了解所裝儀表的具體結(jié)構(gòu)、特點以及流量信號的轉(zhuǎn)換，了解信號傳輸過程中的各個環(huán)節(jié)，按產(chǎn)品說明書進行安裝，以確保流量計的精確測量。

該公司產(chǎn)品分類：巡檢儀威力巴流量計溫壓補償型渦街流量計分體式電磁流量計插入式電磁流量計德爾塔巴流量計皮托管流量計彩屏無紙記錄儀藍屏無紙記錄儀基本型無紙記錄儀無紙記錄儀記錄儀表磁性浮子液位計浮球開關(guān) 磁翻板液位計浮球液位計金屬管轉(zhuǎn)子流量計智能手操器流量積算儀閃光報警器

LUGBS系列管道式渦街流量計，內(nèi)蒙管道式渦街流量計

² LUGBS簡介

LUGB系列管道式渦街流量計是由設(shè)計在流場中的旋渦發(fā)生體、檢測探頭及相應(yīng)的電子線路等組成。當(dāng)流體流經(jīng)旋渦發(fā)生體時，它的兩側(cè)就形成了交替變化的兩排旋渦，這種旋渦被稱為卡門渦街。斯特羅哈爾在卡門渦街理論的基礎(chǔ)上又提出了卡門渦街的頻率與流體的流速成正比，并給出了頻率與流速的關(guān)系式： f=St×V/d 式中：f 渦街發(fā)生頻率（Hz）

V 旋渦發(fā)生體兩側(cè)的平均流速（m/s） St 斯特哈羅爾系數(shù)（常數(shù)）

這些交替變化的旋渦就形成了一系列交替變化的負壓力，該壓力作用在檢測探頭上，便形成了一系列的交變電信號，經(jīng)前置放大器轉(zhuǎn)換、整形、放大處理后，輸出與旋渦同步成正比的脈沖頻率信號（或標準信號）。

² LUGBS產(chǎn)品特點

1）無可動部件，長期穩(wěn)定，結(jié)構(gòu)簡單便于安裝和維護

2）傳感器輸出為脈沖頻率，其頻率與被測流體的實際流量呈線性，零點無漂移，性能十分穩(wěn)定，結(jié)構(gòu)形式多樣，有管道式、插入式流量傳感器形式

3）精確度較高，通常液體的測量精度為±1.0%；氣體的測量精度為±1.5%

4）測量量程范圍寬，在雷諾數(shù)為2×104 ～7×106范圍內(nèi)，可達1:20

5）壓損�。ḿs為孔板流量計的1/4～1/2），屬于節(jié)能流量儀表

6）安裝方式靈活，根據(jù)現(xiàn)場工藝管道不通，可水平，垂直和不同角度傾斜安裝

7）采用消擾電路和抗震動傳感頭，具有一定抗環(huán)境振動性能

8）采用超低功耗單片微機技術(shù)，1節(jié)3V10AH鋰電池可使用5年以上

9）由軟件對儀表系數(shù)非線性進行修正，提高測量精度

10）采用EPROM對累積流量進行掉電保護，保護時間大于10年

² LUGBS產(chǎn)品分類

儀表型號	LUGBS-N	LUGBS-A	LUGBS-B	LUGBS-C	LUGBS-D
信號輸出	脈沖	4-20mA	無	4-20mA	可選4-20mA/脈沖
供電電源	+24VDC±15%	+24VDC±15%	鋰電池	24VDC±15%	24VDC±15%+鋰電池
精度等級	液體：1.0級氣體或蒸汽：1.5～1.0級		液體：1.0級氣體或蒸汽：1.5～1.0級		液體：1.0級氣體或蒸汽：1.5～1.0級
測量范圍	標準量程		標準量程或擴展量程		標準量程或擴展量程
顯示器	無		有		有
溫壓補償	無		無		有
通訊接口	無		無		RS485
實時記錄	無		無		有
儀表材質(zhì)	304或316L不銹鋼		304或316L不銹鋼		304或316L不銹鋼
防爆等級	ExdIIBT6或ExiaIICT4		ExdIIBT6或ExiaIICT4		ExdIIBT6或ExiaIICT4
防護等級	IP65		IP65		IP65
整機功耗	< 1W		< 1W		< 1W
儀表通經(jīng)	DN15～DN300		DN15～DN300		DN15～DN300
安裝方式	法蘭安裝		法蘭安裝		法蘭安裝
介質(zhì)溫度	-40℃～250℃或 -40℃～350℃		-40℃～250℃或 -40℃～350℃		-40℃～250℃或 -40℃～350℃
環(huán)境溫度	-20℃～60℃		-20℃～60℃		-20℃～60℃

² LUGBS測量范圍及工作壓力

儀表口徑（mm）	液體測量范圍（m3/h）	氣體測量范圍（m3/h）	連接方式	耐壓等級（Mpa）
DN15	1.2-6.2	5-25	法蘭夾裝/法蘭連接	2.5/1.6
DN20	1.5-10	8-50	法蘭夾裝/法蘭連接	2.5/1.6
DN25	1.6-16	10-70	法蘭夾裝/法蘭連接	2.5/1.6
DN32	1.9-19	15-150	法蘭夾裝/法蘭連接	2.5/1.6
DN40	2.5-26	22-220	法蘭夾裝/法蘭連接	2.5/1.6
DN50	3.5-38	36-320	法蘭夾裝/法蘭連接	2.5/1.6
DN65	6.2-65	50-480	法蘭夾裝/法蘭連接	2.5/1.6
DN80	10-100	70-640	法蘭夾裝/法蘭連接	2.5/1.6
DN100	15-150	130-1100	法蘭夾裝/法蘭連接	2.5/1.6
DN125	25-250	200-1700	法蘭夾裝/法蘭連接	1.6/1.6
DN150	36-380	280-2240	法蘭夾裝/法蘭連接	1.6/1.6
DN200	62-650	580-4960	法蘭夾裝/法蘭連接	1.6/1.6
DN250	140-1400	970-8000	法蘭夾裝/法蘭連接	1.6/1.6
DN300	200-2000	1380-11000	法蘭夾裝/法蘭連接	1.6/1.6

該公司產(chǎn)品分類：流量系列溫度溫濕度變送器壓力系列液位系列

渦街流量傳感器

LUGB型旋渦流量計是利用液體振動原理而開發(fā)的一種新型流量計，廣泛應(yīng)用在石油、化工、冶金、造紙等行業(yè)流體的計量，該流量計無可動部件，性強、精度高、壽命長，可在很寬的流量范圍內(nèi)精確測量液體的瞬時流量和累計流量。其不受介質(zhì)溫度、壓力、粘度及組分的影響，同時不堵、不卡、不易結(jié)垢、耐高溫、高壓，安全防爆，適用于惡劣環(huán)境。流量計分一體化顯示和遠傳顯示，并可輸出脈沖信號或電流信號與微機聯(lián)網(wǎng)。

二、主要特點

當(dāng)流體以一定流速流經(jīng)設(shè)置在流場中的旋渦發(fā)生體時，在柱體的下游產(chǎn)生一對交替出現(xiàn)的而且排列整齊的渦列（渦街），先在柱體的一側(cè)產(chǎn)生，繼而在柱體的另一側(cè)產(chǎn)生。這一產(chǎn)生旋渦的理論首先由卡門（Karman）提出，命名為卡門渦街，并給出了頻率與流速的關(guān)系式，其中系數(shù)被命名為斯特羅哈爾數(shù)。

三、技術(shù)參數(shù)

序號	項目	主要性能指標
1	公稱通徑DN（mm）	DN10-DN300
2	流量范圍（m3/h）	0.2-1600
3	度等級	1級；（經(jīng)非線性修正可達0.5級）
4	量程化	10：1
5	重復(fù)性	＜基本誤差限的1/3
6	工作壓力（MPa）	1.0、1.6、2.5、4.0、6.4、10、16、25、32
7	表體材料	不銹鋼
8	介質(zhì)溫度（℃）	-30～120
9	壓力損失（MPa）	△P＝1.2×P×V×10-6
10	顯示方式	就地顯示、遠傳顯示100m
11	輸出信號	①1脈沖　 ②2模擬4-20mA???????? ③3RS485接口
12	供電方式	內(nèi)裝電池：3V　 DC 外接電源：（6～24）V　DC（無原則信號外輸時）
13	環(huán)境條件	溫度：-30℃～55℃；濕度：5%～95%；大氣壓力：96KPa～106KPa
14	適用介質(zhì)	液體
15	防爆等級	Ex dⅡBT4
16	執(zhí)行標準	企業(yè)標準：JB/T 9249-1999檢定規(guī)程：JJG　 198-1994《速度式流量計檢定規(guī)程》

公稱通徑DN（mm）	流量范圍m3/h
10	0.2-2
15	0.3-3
25	1-10
40	3-30
50	40-40
80	10-100
100	20-200
150	45-450
200	80-800
250	120-1200
300	160-1600

江蘇金華自動化儀表設(shè)備廠（江蘇金華儀表線纜有限公司）專業(yè)生產(chǎn)各種熱電偶、熱電阻、雙金屬溫度計、壓力表、壓力變送器、電磁流量計、渦街流量計、V錐流量計、孔板、超聲波流量計、各種數(shù)顯儀表、無紙記錄儀、儀表配件、熱電偶（阻）鎧裝絲材、電線電纜、管件閥門等。網(wǎng)址：http://www.jhyb.cn 郵箱：jinhua@jhyb.cn 商務(wù)咨詢電話：0517-86982766 0517-86998766 傳真：0517-86980766 QQ：1194478361

SDLUGB供應(yīng)渦街流量計，管道式渦街流量計，蒸汽流量計，渦街流量計廠家，渦街流量計價格

渦街流量計也稱之為旋渦流量計或卡門渦街流量計。綜合吸收發(fā)達國家先進技術(shù)和總結(jié)多年研究生產(chǎn)經(jīng)驗的基礎(chǔ)上進行精心設(shè)計的產(chǎn)品，實現(xiàn)了產(chǎn)品智能化、標準化、系列化、通用化、生產(chǎn)模具化、確保產(chǎn)品質(zhì)量的美觀性。該產(chǎn)品具有電路先進、功耗微低、量程比寬、結(jié)構(gòu)簡單、阻力損失小、堅固耐用、用途廣、使用壽命長、工作穩(wěn)定、便于安裝調(diào)試等特點。

2技術(shù)指標編輯

◆測量介質(zhì)：氣體、液體、蒸氣

◆連接方式：法蘭卡裝式、法蘭式、插入式

◆口徑規(guī)格法蘭卡裝式口徑選擇 25,32,50,80,100

◆法蘭連接式口徑選擇 100,150,200

◆流量測量范圍正常測量流速范圍雷諾數(shù)1.5×104～4×106；氣體5～50m/s; 液體0.5～7m/s

正常測量流量范圍液體、氣體流量測量范圍見表2；蒸氣流量范圍見表3

◆測量精度 1.0級 1.5級

◆被測介質(zhì)溫度:常溫–25℃～100℃，高溫–25℃～150℃ -25℃～250℃

◆輸出信號脈沖電壓輸出信號高電平8～10V 低電平0.7～1.3V

◆脈沖占空比約50%,傳輸距離為100m

◆脈沖電流遠傳信號 4～20 mA,傳輸距離為1000m

◆儀表使用環(huán)境溫度:-25℃～+55℃ 濕度:5～90% RH50℃

◆材質(zhì) 不銹鋼, 鋁合金

◆電源 DC24V或鋰電池3.6V

◆防爆等級本安型iaIIbT3-T6，防護等級 IP65

3原理編輯

在流體中設(shè)置三角柱型旋渦發(fā)生體，則從旋渦發(fā)生體兩側(cè)交替地產(chǎn)生有規(guī)則的旋渦，這種旋渦稱為卡門旋渦，旋渦列在旋渦發(fā)生體下游非對稱地排列。

渦街流量計是根據(jù)卡門渦街原理(Kármán Vortex Street)測量氣體、蒸汽或液體的體積流量、標況的體積流量或質(zhì)量流量的體積流量計。并可作為流量變送器應(yīng)用于自動化控制系統(tǒng)中。

渦街流量計是應(yīng)用流體振蕩原理來測量流量的，流體在管道中經(jīng)過渦街流量變送器時，在三角柱的旋渦發(fā)生體后上下交替產(chǎn)生正比于流速的兩列旋渦，旋渦的釋放頻率與流過旋渦發(fā)生體的流體平均速度及旋渦發(fā)生體特征寬度有關(guān)，可用下式表示：

式中:

為旋渦的釋放頻率，單位為Hz；v為流過旋渦發(fā)生體的流體平均速度，單位為m/s；d為旋渦發(fā)生體特征寬度，單位為m；St為斯特勞哈爾數(shù)（Strouhal number），無量綱，它的數(shù)值范圍為0.14－0.27。

St是雷諾數(shù)的函數(shù)，

。

當(dāng)雷諾數(shù)Re在

范圍內(nèi)，St值約為0.2。在測量中，要盡量滿足流體的雷諾數(shù)在

，此時旋渦頻率

。

由此，通過測量旋渦頻率就可以計算出流過旋渦發(fā)生體的流體平均速度v，再由式

可以求出流量q，其中A為流體流過旋渦發(fā)生體的截面積。

4工作原理編輯

渦街流量計是應(yīng)用卡門渦街原理和現(xiàn)代電子技術(shù)設(shè)計而制造的一種流量計，旋渦的發(fā)生頻率與

流體的速度成正比，在一定條件下，符合下式：

（式中f:旋渦發(fā)生頻率 v:流速 d:三角柱寬度 St：斯特勞哈數(shù)）

流體旋渦對三角柱產(chǎn)生交替變化的壓力，由壓電信號傳感器檢測成電信號經(jīng)前置放大器進行放大，

變成標準電信號輸出。

VA型系列渦街流量計可以對廣泛的氣體（包括蒸汽）和液體進行容積計量，配接流量積算儀和溫度、壓力傳感器可進行質(zhì)量運算及各種參數(shù)顯示。

5特點編輯

一、結(jié)構(gòu)簡單而牢固，無可動部件，可靠性高，長期運行十分可靠。

二、安裝簡單，維護十分方便。

三、檢測傳感器不直接接觸被測介質(zhì)，性能穩(wěn)定，壽命長。

四、輸出是與流量成正比的脈沖信號，無零點漂移，精度高。

五、測量范圍寬，量程比可達1：10。

六、壓力損失較小，運行費用低，更具節(jié)能意義。

在一定的雷諾數(shù)范圍內(nèi),輸出信號頻率不受流體物理性質(zhì)和組份變化的響,儀表系數(shù)僅與旋渦發(fā)生體的形狀和尺寸有關(guān),測量流體體積流量時無需補償，調(diào)換配件后一般無需重新標定儀表系數(shù)。

應(yīng)用范圍廣，蒸汽、氣體、液體的流量均可測量。

檢定周期為二年。

LUGB型渦街流量傳感器應(yīng)用內(nèi)徑范圍為25-300mm（滿管式），KTLUI型插入式渦街流量傳感器應(yīng)用內(nèi)徑范圍為350-1200mm(插入式),滿管式測量液體精度為1%，測量蒸汽和氣體精度為1.5%，插入式測量液體精度為2%，測量蒸汽和氣體精度為2.5%，被測介質(zhì)溫度為-20~150℃、-40~250℃、+100~350℃（僅管式），輸出信號為三線制電壓脈沖，三線制4-20mA、二線制4-20mA。

該公司產(chǎn)品分類：校驗儀表儀表配件熱電阻熱電偶流速型流量計節(jié)流裝置非接觸式液位計接觸式液位計電容式壓力變送器擴散貴壓力變送器其他儀表溫度系列流量系列液位系列壓力系列

DYLU系列渦街流量計

產(chǎn)品介紹:

一、主要特點：

DYLUGB型渦街流量傳感器，廣泛用于各種行業(yè)氣體、液體、蒸汽流量的計量，也可測量含有微小顆粒，雜質(zhì)的混濁液體，并可作為流量變送器用于自動化控制系統(tǒng)中。DYLUGB型渦街流量傳感器防爆型，符合GB3836－83《爆炸性環(huán)境用防爆電氣設(shè)備》的有關(guān)規(guī)定，防爆標志為“ia IICT4”，該儀表適用于工廠C級T4組及以下的爆炸性場所。

■ 產(chǎn)品特點

A.壓力損失小，量程范圍寬，范圍度達10～40。B.無可動部件，性能穩(wěn)定，結(jié)構(gòu)簡單便于安裝和維護。C.采用消擾電路和抗振傳感頭，使儀表具有一定抗環(huán)境振動性能。D.可測介質(zhì)溫度達＋350℃（＋450℃）。

■ 主要技術(shù)參數(shù)

公稱口徑	DN25,40,50,80,100,125,150,200,250,300
適用介質(zhì)	氣體液體蒸汽
可測介質(zhì)溫度	-40℃～150℃；-40℃～280℃；-40℃～350℃；-40℃～450℃
公稱壓力	2.5MPa(>2.5MPa 協(xié)商供貨)
精度等級	1.5級
測量范圍	見表4、表5、表6
輸出信號	電壓脈沖:低電平≤1V,高電平≥2.5V,負載電阻≥100KΩ
	4～20mA轉(zhuǎn)換精度±0.5%滿度值,負載電阻<300Ω(24VDC)
	現(xiàn)場液晶顯示:瞬時流量6位顯示(m3/h或kg/h,t/h),轉(zhuǎn)換精度±0.1%;累積流量8位顯示,(m3,kg,t),轉(zhuǎn)換精度±0.1%
供電電源	電壓脈沖輸出時:+12VDC或+24VDC
	4～20mA輸出時:+19VDC～+30VDC
	現(xiàn)場液晶顯示:電池供電3.6V,1節(jié)1號鋰電池,使用壽命大于3年，外部供電+12VDC或+24VDC可實現(xiàn)帶背光的液晶顯示(訂貨注明)
環(huán)境溫度	電壓脈沖輸出:-30℃～+65℃
	4～20mA輸出:-10℃～+55℃
	現(xiàn)場液晶顯示:-25℃～+55℃
防爆標志	iaIICT4
表體材料	1Cr18Ni9Ti(其他材料協(xié)議供貨)
全智能型儀表	輸出信號:體積流量或質(zhì)量流量
全智能型儀表	現(xiàn)場液晶顯示:6位循環(huán)顯示,瞬時流量、壓力、溫度；8位顯示累積量

二、DYP2000系列型譜：

DYL									流量儀表
	U								渦街
		G							流量計
		S							智能流量變送器（4～20mA輸出）
			B						應(yīng)力式敏感元件
				-2					法蘭卡裝連接
					2				液體介質(zhì)
					3				氣體介質(zhì)
					4				蒸汽介質(zhì)
						02			公稱通徑Φ20～25mm（按用戶要求）
						03			公稱通徑Φ32mm
						04			公稱通徑Φ40mm
						05			公稱通徑Φ50mm
						08			公稱通徑Φ80mm
						10			公稱通徑Φ100mm
						12			公稱通徑Φ125mm
						15			公稱通徑Φ150mm
						20			公稱通徑Φ200mm
						25			公稱通徑Φ250mm
						30			公稱通徑Φ300mm
							C		碳鋼法蘭
							S		不銹鋼法蘭
								1	三線制電壓脈沖輸出
								2	二線制電流4～20mADC輸出+本地顯示
								3	脈沖+本地顯示
								4	二線4～20mADC+本地顯示（鋰電池供電）
								5	本地顯示（鋰電池供電）

DXLUGBDXLUGB渦街流量計

DXLUGB/E型渦街流量計廣泛適用于石油、化工、冶金、熱力、紡織、造紙等行業(yè)對過熱蒸汽、飽和蒸汽、壓縮空氣和一般氣體（氧氣、氮氣氫氣、天然氣、煤氣等）、水和液體（如：水、汽油、酒精、苯類等）的計量和控制.

二、產(chǎn)品的種類和適用范圍

a） DXLUGB系列滿管型壓電式渦街流量計

b） DXLUGB系列插入型壓電式渦街流量計

c） DXLUGE系列滿管型電容式渦街流量計

d） DXLUGE系列插入型電容式渦街流量計

e） DXLUGB/E系列電池供電型渦街流量計

f）潛水型/分體型渦街流量計（協(xié)議訂貨）

g）多功能曲線紀錄積算儀，帶P/T補償功能、中文液晶顯示

h）智能流量積算儀，數(shù)碼管顯示

三、DXLUGB/E系列渦街流量儀表參比條件下渦街流量傳感器工況流量范圍表

儀表口徑（mm）	液體		氣體
儀表口徑（mm）	測量范圍（m³/h）	輸出頻率范圍（Hz）	測量范圍（m³/h）	輸出頻率范圍（Hz）
25	1.2～16	25～336	8.8～55	190～1140
40	2～40	10～200	27～205	140～1040
50	3～60	8～160	35～380	94～1020
80	6.5～130	4.1～82	86～1100	55～690
100	15～220	4.7～69	133～1700	42～536
150	30～450	2.8～43	347～4000	33～380
200	45～800	2～31	560～8000	22～315
250	65～1250	1.5～25	890～11000	18～221
300	95～2000	1.2～24	1360～18000	16～213
（300）	100～1500	5.5～87	1560～15600	85～880
（400）	180～3000	5.6～87	2750～27000	85～880
（500）	300～4500	5.6～88	4300～43000	85～880
（600）	450～6500	5.7～89	6100～61000	85～880
（800）	750～10000	5.7～88	11000～110000	85～880
（1000）	1200～1700	5.8～88	17000～170000	85～880
>（1000）	協(xié)議		協(xié)議

注：表中（300）～（1000）口徑為插入式

四、DXLUGB/E渦街流量計選型表（符合JB/T9294-1999標準）

型譜							說明
LU							渦街流量儀表
G							傳感器
檢測方式		B					壓電式傳感器
		E					電容式傳感器
連接方式			1	僅對滿管型			法蘭連接型
			2	僅對滿管型			法蘭卡裝型
			3	僅對插入型			簡易插入型
			4	僅對插入型			球閥插入型
測量介質(zhì)				2			液體
				3			氣體
				4			蒸汽
公稱通徑					02 … 30		DN25 … 單位：mm DN300
使用環(huán)境	P				普通型
	B				防爆型
輸出信號						1	脈沖輸出
						2	4～20mA電流輸出，液晶顯示
						3	RS-485通訊
						4	電池供電，不帶溫度、壓力補償
						5	溫壓補償一體，4～20mA電流輸出型
						6	溫壓補償一體，電池供電型
選型說明	例如： DXLUGE2405-P2 滿管型電容式渦街流量計，法蘭卡裝型連接，介質(zhì)為蒸汽儀表通徑為DN50,普通 4～20mA電流信號輸出

五、確定流量范圍和儀表口徑的基本步驟：

（1）被測介質(zhì)的名稱、組份

（2）工作狀態(tài)的最小、常用、最大流量

（3）介質(zhì)的、常用、壓力和溫度

（4）工作狀態(tài)下介質(zhì)的粘度

六、常用氣體介質(zhì)的標準狀態(tài)密度表（0℃，絕壓P=0.1MPa）

氣體名稱	密度（kg/m³）	氣體名稱	密度（kg/m³）
空氣（干）	1.2928	乙炔	1.1717
氮氣	1.2506	乙烯	1.2604
氧氣	1.4289	丙烯	1.9140
氬氣	1.7840	甲烷	0.7167
氖氣	0.9000	乙烷	1.3567
氨氣	0.7710	丙烷	2.0050
氫氣	0.08988	丁烷	2.7030
一氧化碳	1.97704	天然氣	0.8280
二氧化碳	1.3401	煤制氣	0.8020

LUGB智能渦街流量計

LUGB系列智能渦街流量計,主要用于工業(yè)管道介質(zhì)流體的流量測量,如氣體、液體、蒸氣等多種介質(zhì)。其特點是壓力損失小,量程范圍大,精度高,在測量工況體積流量時幾乎不受流體密度、壓力、溫度、粘度等參數(shù)的影響。無可動機械零件，因此性高,維護量小。儀表參數(shù)能穩(wěn)定。本儀表采用壓電應(yīng)力式傳感器,性高,可在-20℃～+250℃的工作溫度范圍內(nèi)工作。有模擬標準信號,也有數(shù)字脈沖信號輸出,容易與計算機等數(shù)字系統(tǒng)配套使用,是一種比較、理想的流量儀表。

※原理

在流體中設(shè)置三角柱型旋渦發(fā)生體，則從旋渦發(fā)生體兩側(cè)交替地產(chǎn)生有規(guī)則的旋渦，這種旋渦稱為卡門旋渦，如右圖所示，旋渦列在旋渦發(fā)生體下游非對稱地排列�！　≡O(shè)旋渦的發(fā)生頻率為f，被測介質(zhì)平均流速為，旋渦發(fā)生體迎流面寬度為d，表體通徑為D，即可得到以下關(guān)系式：

　f=SrU₁/d=SrU/md 　　　　　　　　　　　　　　　　　　　　(1)式中　　U1--旋渦發(fā)生體兩側(cè)平均流速，m/s；　　　　Sr--斯特勞哈爾數(shù)；　　　　m--旋渦發(fā)生體兩側(cè)弓形面積與管道橫截面面積之比　　　　　　　　

　管道內(nèi)體積流量qv為　　　　　　　　　　　　qv=πD²U/4=πD²mdf/4Sr 　　　　　　　　　　　　　　　　(2)　　　　　　　　　　　　K=f/qv=[πD²md/4Sr]^-1 　　　　　　　　　　　　　　　　 (3)式中 K--流量計的儀表系數(shù)，脈沖數(shù)/m³(P/m³)�！　除與旋渦發(fā)生體、管道的幾何尺寸有關(guān)外，還與斯特勞哈爾數(shù)有關(guān)。斯特勞哈爾數(shù)為無量綱參數(shù)，它與旋渦發(fā)生體形狀及雷諾數(shù)有關(guān)，圖2所示為圓柱狀旋渦發(fā)生體的斯特勞哈爾數(shù)與管道雷諾數(shù)的關(guān)系圖。由圖可見，在Re_D=2×10⁴～7×10⁶范圍內(nèi)，Sr可視為常數(shù)，這是儀表正常工作范圍。當(dāng)測量氣體流量時，VSF的流量計算式為

　　　　　　　　　　　　　　　　　　　　　　　　　　(4)

圖2 斯特勞哈爾數(shù)與雷諾數(shù)關(guān)系曲線

式中 q_Vn，q_V--分別為標準狀態(tài)下(0^oC或20^oC，101.325kPa)和工況下的體積流量，m³/h；　　 Pn，P--分別為標準狀態(tài)下和工況下的絕對壓力，Pa；　　 Tn，T--分別為標準狀態(tài)下和工況下的熱力學(xué)溫度，K；　　 Zn，Z--分別為標準狀態(tài)下和工況下氣體壓縮系數(shù)。　　由上式可見，VSF輸出的脈沖頻率信號不受流體物性和組分變化的影響，即儀表系數(shù)在一定雷諾數(shù)范圍內(nèi)僅與旋渦發(fā)生體及管道的形狀尺寸等有關(guān)。但是作為流量計在物料平衡及能源計量中需檢測質(zhì)量流量，這時流量計的輸出信號應(yīng)同時監(jiān)測體積流量和流體密度，流體物性和組分對流量計量還是有直接影響的。

　　渦街流量計便是依據(jù)卡門旋渦原理進行封閉管道流體流量測量的新型流量計。因其具有良好的介質(zhì)適應(yīng)能力，無需溫度壓力補償即可直接測量蒸汽、空氣、氣體、水、液體的工況體積流量，配備溫度、壓力傳感器可測量標況體積流量和質(zhì)量流量，是節(jié)流式流量計的理想替代產(chǎn)品。　　為提高渦街流量計的耐高溫及抗振動性能，我公司新近開發(fā)出了HLUG改進型渦街流量傳感器，因其獨特的結(jié)構(gòu)和選材使該傳感器可在高溫(350℃)、強振動(≤1g)的惡劣工況下使用�！　≡趯嶋H應(yīng)用中，往往最大流量遠低于儀表的上限值，隨著負荷的變化，最小流量又往往會低于儀表的下限值，儀表并非工作在它的工作段，為了解決這一問題，通常采用在測量處縮徑提高測量處的流速，并選用較小口徑的儀表以利于儀表的測量，但是這種變徑方式必須在變徑管與儀表間有長度為15D以上的直管段進行整流，使加工、安裝都不方便。我公司研制的縱斷面形狀為圓弧的LGZ變徑整流器，具有整流、提高流速及改變流速分布多重作用，其結(jié)構(gòu)尺寸小，僅為工藝管內(nèi)徑的1/3，與渦街流量計作成一體，不僅不需要另外附加一段直管段，還可以降低對工藝管直管段的要求，安裝非常方便。

為了使用方便，電池供電的本地顯示型渦街流量計采用微功耗高新技術(shù)，采用鋰電池供電可不間斷運行一年以上，節(jié)省了電纜和顯示儀表的采購安裝費用，可就地顯示瞬時流量、累積流量等。溫度補償一體型渦街流量計還帶有溫度傳感器，可以直接測量出飽和蒸汽的溫度并計算出壓力，從而顯示飽和蒸汽的質(zhì)量流量。溫壓補償一體型帶有溫度、壓力傳感器，用于氣體流量測量可直接測量出氣體介質(zhì)的溫度和壓力，從而顯示氣體的標況體積流量�！魷y量介質(zhì)：氣體、液體、蒸氣◆口徑規(guī)格法蘭卡裝式口徑選擇 25,32,50,80,100◆法蘭連接式口徑選擇 100,150,200◆流量測量范圍正常測量流速范圍雷諾數(shù)1.5×104～4×106；氣體5～50m/s; 液體0.5～7m/s 正常測量流量范圍液體、氣體流量測量范圍見表2；蒸氣流量范圍見表3◆測量精度 1.0級 1.5級◆被測介質(zhì)溫度:常溫–25℃～100℃◆高溫–25℃～150℃ -25℃～250℃◆輸出信號脈沖電壓輸出信號高電平8～10V 低電平0.7～1.3V◆脈沖占空比約50%,傳輸距離為100m◆脈沖電流遠傳信號 4～20 mA,傳輸距離為1000m◆儀表使用環(huán)境溫度:-25℃～+55℃ 濕度:5～90% RH50℃◆材質(zhì) 不銹鋼, 鋁合金◆電源 DC24V或鋰電池3.6V◆防爆等級本安型iaIIbT3-T6 防護等級 IP65

產(chǎn)品選型

代號	通徑	流量范圍㎡/h
LUGB-25	DN25	0.44~14(液體)			9.3~124(氣體)			蒸汽流量請查看說明書，DN300以上推薦使用插入式渦街流量計
LUGB-32	DN32	0.73~25(液體)			15.3~203(氣體)
LUGB-40	DN40	1.2~39(液體)			23.9~318(氣體)
LUGB-50	DN50	1.8~60(液體)			37.3~496(氣體)
LUGB-80	DN80	4.6~155(液體)			95.5~1270(氣體)
LUGB-100	DN100	7.1~241(液體)			149~1985(氣體)
LUGB-150	DN150	16~544(液體)			336~4466(氣體)
LUGB-200	DN200	28.3~967(液體)			597~7939(氣體)
	代號	功能1
	N	無溫壓補償
	Y	有溫壓補償
		代號	輸出型號
		F1	4-20mA輸出(二線制)
		F2	4-20mA輸出(三線制)
		F3	RS485通訊接口
			代號	被測介質(zhì)
			J1	液體
			J2	氣體
			J3	蒸汽
				代號		連接方式
				L1		法蘭卡裝式
				L2		法蘭連接式
						代號	功能2
						E1	1.0級
						E2	1.5級
						T1	常溫
						T2	高溫
						T3	蒸汽
						P1	1.6MPa
						P2	2.5MPa
						P3	4.0MPa
						D1	內(nèi)部3.6V供電
						D2	DC24V供電
						B1	不銹鋼
						B2	碳鋼

該公司產(chǎn)品分類：渦輪流量計雷達物位計溫度就地顯示儀雙金屬溫度計熱電阻熱電偶綜合校驗儀壓力校驗儀溫度校驗儀智能巡檢儀 PID 操作器閃光報警儀表流量顯示儀表顯示調(diào)節(jié)儀無紙記錄儀金屬管浮子流量計節(jié)流裝置漩渦流量計電磁流量計渦街流量計