50P80-EAOA1AAOAAAA德國(guó)正品Endress+Hause電磁流量計(jì)50P80-EAOA1AAOAAAA的詳細(xì)資料：

 德國(guó)正品Endress+Hause電磁流量計(jì)50P80-EAOA1AAOAAAA

E+H電磁流量計(jì)是根據(jù)法拉第電磁感應(yīng)定律進(jìn)行流量測(cè)量的流量計(jì)。電磁流量計(jì)的優(yōu)點(diǎn)是壓損極小，可測(cè)流量范圍大。zui大流量與zui小流量的比值一般為20：1以上，適用的工業(yè)管徑范圍寬，zui大可達(dá)3m，輸出信號(hào)和被測(cè)流量成線性，精確度較高，可測(cè)量電導(dǎo)率≥1μs/cm的酸、堿、鹽溶液、水、污水、腐蝕性液體以及泥漿、礦漿的流體流量。但它不能測(cè)量氣體、蒸汽以及純凈水的流量。

當(dāng)導(dǎo)體在磁場(chǎng)中作切割磁力線運(yùn)動(dòng)時(shí)，在導(dǎo)體中會(huì)產(chǎn)生感應(yīng)電勢(shì)，感應(yīng)電勢(shì)的大小與導(dǎo)體在磁場(chǎng)中的有效長(zhǎng)度及導(dǎo)體在磁場(chǎng)中作垂直于磁場(chǎng)方向運(yùn)動(dòng)的速度成正比。同理，導(dǎo)電流體在磁場(chǎng)中作垂直方向流動(dòng)而切割磁感應(yīng)力線時(shí)，也會(huì)在管道兩邊的電極上產(chǎn)生感應(yīng)電勢(shì)。感應(yīng)電勢(shì)的方向由右手定則判定，感應(yīng)電勢(shì)的大小由下式確定：

Ex=BDv-----------------式（1）

式中Ex—感應(yīng)電勢(shì)，V；

B—磁感應(yīng)強(qiáng)度，T

D—管道內(nèi)徑，m

v—液體的平均流速，m/s

然而體積流量qv等于流體的流速v與管道截面積（πD?）/4的乘積，將式（1）代入該式得：

Qv=（πD/4B）* Ex ---------式（2）

由上式可知，在管道直徑D己定且保持磁感應(yīng)強(qiáng)度B不變時(shí)，被測(cè)體積流量與感應(yīng)電勢(shì)呈線性關(guān)系。若在管道兩側(cè)各插入一根電極，就可引入感應(yīng)電勢(shì)Ex，測(cè)量此電勢(shì)的大小，就可求得體積流量。

德國(guó)正品Endress+Hause電磁流量計(jì)50P系列測(cè)量原理：根據(jù)法拉第電磁感應(yīng)定律，在磁感應(yīng)強(qiáng)度為B的均勻磁場(chǎng)中，垂直于磁場(chǎng)方向放一個(gè)內(nèi)徑為D的不導(dǎo)磁管道，當(dāng)導(dǎo)電液體在管道中以流速v流動(dòng)時(shí)，導(dǎo)電流體就切割磁力線.如果在管道截面上垂直于磁場(chǎng)的直徑兩端安裝一對(duì)電極則可以證明，只要管道內(nèi)流速分布為軸對(duì)稱分布，兩電極之間產(chǎn)生感生電動(dòng)勢(shì)：

e=KBDv （3-36）

式中，v為管道截面上的平均流速，k為儀表常數(shù)。由此可得管道的體積流量為：

qv= πeD/4KB （3-37）

由上式可見，體積流量qv與感應(yīng)電動(dòng)勢(shì)e和測(cè)量管內(nèi)徑D成線性關(guān)系，與磁場(chǎng)的磁感應(yīng)強(qiáng)度B成反比，與其它物理參數(shù)無關(guān)。這就是電磁流量計(jì)的測(cè)量原理。

需要說明的是，要使式（3—37）嚴(yán)格成立，必須使電磁流量計(jì)測(cè)量條件滿足下列假定：

①磁場(chǎng)是均勻分布的恒定磁場(chǎng);

②被測(cè)流體的流速軸對(duì)稱分布;

③被測(cè)液體是非磁性的;

④被測(cè)液體的電導(dǎo)率均勻且各向同性。

德國(guó)正品Endress+Hause電磁流量計(jì)50P80-EAOA1AAOAAAA

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50W2H-UD0B1AK2AAAH  50W65-UA0B1AA0AAAH  50P25-AA1B1AA0AAAH   50W32-UA0B1AA0AAAH

50W1H-UC0B1AA0AAAH  50W80-HC0A1AA0AAAH   53W1F-UC0B1AK6AAAJ 電纜L=1500

50WT8-HE0B1AK6AAAH L=1500  50WT2-HE0B1AK6AAAH L=1500  50W2H-UD0B1AK6AAAH L=1500

50W2H-UC0B1AA0AAAH  50W65-HC0A1AA0AAAH  72F1H-SB0AA1GAA6AH  50P2H-AD0B1AA0AAAH

80M50-AS2AAAAAAAAA  80I40-AD2WABAAAAAA  DTI200-A12D1A  DTI200-A14B1A

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65I-20AA0AD1A3AAAA  72F2H-SB0BA1AEA4AA  50W65-HC0A1AA0AAAW   50W65-UC0A1AA0AAAW

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10W1H-UC1A1AA0A4AA  72F1F-SE0AA1AAA4AW   91WA1-AA3B12AKA4AA 電纜長(zhǎng)度10M

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50W4H-UD0A1HK2CAAA  72F80-SK0AA1NAB4AW  50P40-ER2A1RA0BEAW  53H08-LBOB1AA0ABAA

50P25-EA1A1AA0ABAA  50W1F-UC0A1AA0ABAA  50W2H-UD0A1AA0ABAA   65F40-BE2AG1AAAAAA

50P50-EA1A1AA0BAAA  50P80-EA1A1AA0BAAA  80M50-AS2AABAAAAA8  73F2H-SD4AA1AAA4AA

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10H65-UF0A1AA0A4AA   91WA1-BA1A10ACA4AA  53W80-HC0B1AA0AAAA  72F80-SE0AA1AAA4AA

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10P32-EA0A1AA0A4AA  10P80-EC1A1AA0B4AA  10P50-EA1A1AA0A4AA  50P1H-EA0A1AA0AAAA

72F25-SE1AA1CAB4AW  50P32-EF1A1AA0AAAW  50P15-EF1A1AA0AAAW  50P50-EA1A1AA0BAAA

50P80-EA1A1AA0BAAA  80M50-AS2AABAAAAA8  50W1H-HC0A1AA0AAAW  50P15-EA0A1AA0AAAW

10P32-EA0A1AA0A4AA  50W50-UA0A1AA0AAAW  91WA1-AA2A10ACA4AA  53P2H-EC0B1AA0AAAA

93WA2-AB3B10ACAAAA  5BH08-VF0A1AB041A1  53H40-1F0B1AA0ADAA  72F50-SE0AA1AAA4AA

72F1F-SE0AA1AAA4AA  72F2H-SE0AA1AAA4AA  10W40-UA0A1AA0A4AA  10W1Z-UC0A1AA0A4AA

50P25-AS0A1BA0AAAW  50P1F-EM0A1BA0AAAW  53W2H-HC2B1AK6AGCA L=100m   FMU40-ANB1A2

53W2F-HC2B1AK6AGCA L=100m    80A02-ASVWAAAACAAA    65F25-AE2AG1AAAACA

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