稱重(zhong)傳感器(qi)(qi)有電(dian)阻應(ying)變式(shi)、電(dian)磁力補(bu)償(chang)式(shi)、電(dian)容式(shi)和振弦式(shi)。在商(shang)用稱重(zhong)測量儀器(qi)(qi)中，電(dian)阻應(ying)變式(shi)稱重(zhong)傳感器(qi)(qi)是(shi)選擇(ze)。它體(ti)積小，反應(ying)快，使用方便(bian)，價格低廉。同(tong)(tong)的角度來(lai)看，電(dian)子秤可以分為不同(tong)(tong)的類別(bie)。 

(1)電(dian)子(zi)秤從原理、結構、稱(cheng)量原理上(shang)可以分為(wei)機械和電(dian)子(zi)兩大(da)類。機械式多(duo)采用彈(dan)簧盤結構。價(jia)格低，無電(dian)源，機械結構有限，精度(du)提高，功能單一。電(dian)子(zi)功能，精度(du)高，易(yi)于高度(du)集(ji)成。

(2)電(dian)(dian)(dian)子(zi)秤(cheng)(cheng)功能，精度高，易(yi)于集成。因此，電(dian)(dian)(dian)子(zi)秤(cheng)(cheng)是近(jin)年來(lai)應(ying)用廣泛(fan)的。電(dian)(dian)(dian)子(zi)稱重(zhong)傳(chuan)(chuan)感器(qi)(qi)的工作原(yuan)(yuan)理(li)(li)是在(zai)載體上放置(zhi)負載后，載體通過傳(chuan)(chuan)力機(ji)構對稱重(zhong)傳(chuan)(chuan)感器(qi)(qi)施加(jia)重(zhong)力，傳(chuan)(chuan)感器(qi)(qi)受(shou)力后相應(ying)的形狀或位置(zhi)發生變(bian)(bian)化(hua)，會(hui)使(shi)傳(chuan)(chuan)感器(qi)(qi)輸出(chu)一個變(bian)(bian)化(hua)的電(dian)(dian)(dian)量(liang)，這(zhe)種變(bian)(bian)化(hua)可(ke)以被(bei)電(dian)(dian)(dian)子(zi)儀器(qi)(qi)準確檢測到。經過的變(bian)(bian)換，負載的重(zhong)量(liang)可(ke)以數字(zi)形式顯(xian)示出(chu)來(lai)。機(ji)械稱重(zhong)傳(chuan)(chuan)感器(qi)(qi)的工作原(yuan)(yuan)理(li)(li)機(ji)械電(dian)(dian)(dian)子(zi)秤(cheng)(cheng)一般(ban)采用虎克原(yuan)(yuan)理(li)(li)制作彈簧秤(cheng)(cheng)或指針式秤(cheng)(cheng)。過去有羅(luo)威爾原(yuan)(yuan)理(li)(li)做的廚房秤(cheng)(cheng)。

電(dian)子(zi)應(ying)變(bian)式(shi)稱重(zhong)傳(chuan)感器主要用(yong)(yong)作電(dian)子(zi)秤的(de)(de)(de)稱重(zhong)傳(chuan)感器。電(dian)子(zi)應(ying)變(bian)式(shi)稱重(zhong)傳(chuan)感器將電(dian)阻(zu)(zu)應(ying)變(bian)式(shi)傳(chuan)感器連接到特(te)殊的(de)(de)(de)彈性梁上。重(zhong)物受壓后，彈性體變(bian)形，其電(dian)阻(zu)(zu)應(ying)變(bian)片也變(bian)形。測(ce)得的(de)(de)(de)重(zhong)量(liang)(liang)轉(zhuan)化(hua)為(wei)因變(bian)量(liang)(liang)，電(dian)阻(zu)(zu)值(zhi)發生變(bian)化(hua)。打破平衡(heng)輸出電(dian)壓獲得電(dian)壓值(zhi)的(de)(de)(de)是四壁組成的(de)(de)(de)橋式(shi)測(ce)量(liang)(liang)電(dian)路。線性關系好(hao)，抗側向(xiang)和側向(xiang)偏心荷(he)載能(neng)力強，四角誤差小(xiao)。這些應(ying)用(yong)(yong)廣(guang)泛用(yong)(yong)于(yu)力的(de)(de)(de)測(ce)量(liang)(liang)。

電(dian)子(zi)秤(cheng)的(de)稱重(zhong)(zhong)傳(chuan)感(gan)(gan)器(qi)(qi)由(you)材料(liao)制成，使用優質(zhi)彈性鋁合金(jin)(jin)材料(liao)是電(dian)子(zi)秤(cheng)傳(chuan)感(gan)(gan)器(qi)(qi)的(de)關鍵之一(yi)。稱重(zhong)(zhong)精(jing)度(du)要(yao)求0.03%F.S，所以(yi)鋁合金(jin)(jin)的(de)正(zheng)蠕(ru)變小于0.03FS非常重(zhong)(zhong)要(yao)，只有(you)(you)這(zhe)樣才(cai)能傳(chuan)感(gan)(gan)器(qi)(qi)的(de)綜合精(jing)度(du)。M-2048 T8 1是一(yi)種用于電(dian)子(zi)秤(cheng)稱重(zhong)(zhong)傳(chuan)感(gan)(gan)器(qi)(qi)的(de)鋁合金(jin)(jin)材料(liao)，經高溫而成。其彈性模量、蠕(ru)變強(qiang)度(du)、熱膨脹(zhang)系數(shu)、硬度(du)、線性度(du)、蠕(ru)變、磁滯(zhi)等數(shu)據對于電(dian)子(zi)秤(cheng)的(de)應用領域(yu)具有(you)(you)實用性。