什麼是電磁流量計勵磁方式

    勵磁方式在電磁流量計實際應用上可分成交流正弦波勵磁、非正弦波交流勵磁和直流勵磁方式，勵磁是電磁流量計測量性能的關鍵技術之一。
    1、非(fei)正(zheng)弦(xian)波(bo)交(jiao)流(liu)勵(li)磁(ci)，是(shi)采(cai)用(yong)低(di)於(yu)工(gong)業(ye)頻(pin)率(lv)的(de)方(fang)波(bo)或(huo)三(san)角(jiao)波(bo)勵(li)磁(ci)的(de)方(fang)式(shi)
，可(ke)以(yi)認(ren)為(wei)產(chan)生(sheng)恒(heng)定(ding)直(zhi)流(liu)

，周(zhou)期(qi)性(xing)地(di)改(gai)變(bian)極(ji)性(xing)的(de)方(fang)式(shi)，因(yin)這(zhe)種(zhong)勵(li)磁(ci)電(dian)源(yuan)穩(wen)定(ding)，故(gu)不(bu)必(bi)為(wei)除(chu)去(qu)磁(ci)場(chang)強(qiang)度(du)的(de)變(bian)動(dong)而(er)進(jin)行(xing)運(yun)算(suan)。
    2、交流正弦波勵磁

，當交流電源電壓(有時是頻率)buwenshi，cichangqiangdujiangyousuogaibian
，suoyidianciliuliangjidianjijianchanshengdeganyingdiandongshiyebiandong，yiner，bixucongdianciliuliangjiquchuduiyingyujisuancichangqiangdudexinhao


，zuoweibiaozhunxinhao。zhezhonglicifangshiyiyinqilingdianbiandong，erjiangdiqiceliangjingdu。
    3、jiaoliulicifangshidezhuyaowentishiganyingzaoshengyanzhong。zhiliulicifangshi，zeshizaidianjishangdejihuadianweichenglezhongyaozhangai。suoyiyidingzhidezhiliulicifangshijinshiyongyufeidianjiezhi(如液態金屬)液體的測量。
    在測量自來水、yuanshuidengshuirongyeshi
，yibancaiyongzhouqixingjianxiedezhiliulicifangshi。jianxiezhouqiyingxuanweijiaoliudianyuanzhouqidezhengshubei，kexiaochujiaoliudianyuanpinlvdezaosheng
，paichulejiaoliucichangdedianwoliuhezhiliucichangdejihuaganrao。
    4、dipinjuxingbolici
，licipinlvjiangdi
，lingdianwendingxingkeyitigao
，danyibiaokangdipinganraonenglijianruo
，xiangyingsuduman，ruguolicipinlvgao，zekangdipinganraodenenglizengqiang，dandianciliuliangjidelingdianwendingxingjiangdi。zheyiwentidaoershishijiqishiniandaiyanjiuchuledipinjuxingbo(50Hz的1/2～1/32)，解決了長期困擾電磁流量計的工頻幹擾，提高了零點穩定性和測量精確度。