HELDN50K1C5B1聚氨脂橡膠電磁流量計

HELDN50K1C5B1聚氨脂橡膠電磁流量計

電(dian)磁流量計的結構主要由磁路系統(tong)、測量導(dao)管、電(dian)極(ji)、外殼、襯里和(he)轉換器等部分組成。

工作原理
智能電(dian)(dian)(dian)(dian)磁(ci)(ci)流(liu)量(liang)(liang)計測(ce)量(liang)(liang)原(yuan)理(li)是基(ji)于法拉第電(dian)(dian)(dian)(dian)磁(ci)(ci)感應定(ding)律。流(liu)量(liang)(liang)計的(de)(de)測(ce)量(liang)(liang)管(guan)(guan)是一(yi)內(nei)襯絕(jue)緣(yuan)材料的(de)(de)非導(dao)(dao)磁(ci)(ci)合金(jin)短(duan)管(guan)(guan)。兩只電(dian)(dian)(dian)(dian)極(ji)沿(yan)管(guan)(guan)徑方(fang)向穿通(tong)(tong)管(guan)(guan)壁固(gu)定(ding)在測(ce)量(liang)(liang)管(guan)(guan)上(shang)(shang)。其電(dian)(dian)(dian)(dian)極(ji)頭與襯里內(nei)表面基(ji)本齊(qi)平。 勵磁(ci)(ci)線圈(quan)由(you)雙(shuang)向方(fang)波脈沖勵磁(ci)(ci)時(shi)，將在與測(ce)量(liang)(liang)管(guan)(guan)軸線垂直的(de)(de)方(fang)向上(shang)(shang)產生一(yi)磁(ci)(ci)通(tong)(tong)量(liang)(liang)密度為B的(de)(de)工作磁(ci)(ci)場。此時(shi)，如果具(ju)有一(yi)定(ding)電(dian)(dian)(dian)(dian)導(dao)(dao)率(lv)的(de)(de)流(liu)體流(liu)經(jing)測(ce)量(liang)(liang)管(guan)(guan)，將切割(ge)磁(ci)(ci)力線感應出電(dian)(dian)(dian)(dian)動勢(shi)E。 電(dian)(dian)(dian)(dian)動勢(shi)E正比于磁(ci)(ci)通(tong)(tong)量(liang)(liang)密度B、測(ce)量(liang)(liang)管(guan)(guan)內(nei)徑d與平均流(liu)速V的(de)(de)乘積，電(dian)(dian)(dian)(dian)動勢(shi)E(流(liu)量(liang)(liang)信號(hao))由(you)電(dian)(dian)(dian)(dian)極(ji)檢出并(bing)通(tong)(tong)過電(dian)(dian)(dian)(dian)纜送至轉換器。轉換器將流(liu)量(liang)(liang)信號(hao)放(fang)大(da)處(chu)理(li)后，可(ke)顯(xian)示流(liu)體流(liu)量(liang)(liang)，并(bing)能輸出脈沖，摸(mo)擬電(dian)(dian)(dian)(dian)流(liu)等信號(hao)，用(yong)于流(liu)量(liang)(liang)的(de)(de)控制和(he)調節(jie)。

產品選型

注：精度(du)為0.5級(ji)建(jian)議(yi)流速范圍在（0.5~5）m/s