光(guang)纖光(guang)柵混凝土(tu)(tu)(tu)表面(mian)(mian)標準(zhun)型應(ying)(ying)(ying)變(bian)計(ji)主要(yao)用(yong)于(yu)混凝土(tu)(tu)(tu)表面(mian)(mian)的(de)應(ying)(ying)(ying)力應(ying)(ying)(ying)變(bian)監測，也用(yong)于(yu)對(dui)各種(zhong)金屬或其他(ta)固(gu)體結構表面(mian)(mian)進(jin)行(xing)靜態和動態應(ying)(ying)(ying)力應(ying)(ying)(ying)變(bian)監測。產品采用(yong)特有的(de)彈性(xing)梁結構，具有較高(gao)的(de)測量(liang)分(fen)辨率和測量(liang)。現(xian)場安裝時先在(zai)混凝土(tu)(tu)(tu)表面(mian)(mian)打四個鉆孔，然后采用(yong)緊固(gu)螺釘將(jiang)底(di)座固(gu)定(ding)在(zai)混凝土(tu)(tu)(tu)表面(mian)(mian)，通過螺母將(jiang)傳(chuan)(chuan)感器(qi)方(fang)(fang)(fang)便地固(gu)定(ding)在(zai)底(di)座上，亦可(ke)通過焊接或粘貼(tie)方(fang)(fang)(fang)式(shi)(shi)將(jiang)傳(chuan)(chuan)感器(qi)固(gu)定(ding)在(zai)結構表面(mian)(mian)。產品符合國家建筑工業(ye)行(xing)業(ye)標準(zhun)JG/T422-2013。產品特點(dian)，安裝方(fang)(fang)(fang)便，既可(ke)進(jin)行(xing)監測，又可(ke)在(zai)短(duan)期(qi)監測，能重復使(shi)用(yong)；適用(yong)于(yu)環境溫(wen)(wen)度變(bian)化(hua)小(xiao)的(de)工程(cheng)，占用(yong)波長(chang)帶寬資源少，批量(liang)實用(yong)性(xing)高(gao)，節省項目整體成本；尾纖采用(yong)PU披(pi)覆鎧(kai)裝光(guang)纜(lan)，具有優異的(de)耐(nai)溫(wen)(wen)性(xing)能和耐(nai)腐蝕、耐(nai)老化(hua)性(xing)能，適應(ying)(ying)(ying)野(ye)外存活環境；穩定(ding)性(xing)好、可(ke)靠(kao)性(xing)高(gao)。埋入式(shi)(shi)振(zhen)弦應(ying)(ying)(ying)變(bian)計(ji)集(ji)成有溫(wen)(wen)度傳(chuan)(chuan)感器(qi)。長(chang)春振(zhen)弦式(shi)(shi)土(tu)(tu)(tu)壓力應(ying)(ying)(ying)變(bian)計(ji)哪家好

振(zhen)弦(xian)式(shi)(shi)應(ying)(ying)(ying)(ying)(ying)變(bian)(bian)計(ji)(ji)(ji)使(shi)(shi)用(yong)(yong)(yong)指(zhi)南(nan)：1.測(ce)(ce)量(liang)(liang)(liang)，測(ce)(ce)量(liang)(liang)(liang)振(zhen)弦(xian)式(shi)(shi)應(ying)(ying)(ying)(ying)(ying)變(bian)(bian)計(ji)(ji)(ji)先將測(ce)(ce)量(liang)(liang)(liang)線(xian)連接(jie)(jie)振(zhen)弦(xian)讀(du)數(shu)儀(yi)，將各色夾子(zi)對應(ying)(ying)(ying)(ying)(ying)連接(jie)(jie)上應(ying)(ying)(ying)(ying)(ying)變(bian)(bian)計(ji)(ji)(ji)的(de)輸(shu)出(chu)電纜(lan)，黑(hei)、紅測(ce)(ce)頻率，白(bai)(bai)、綠測(ce)(ce)溫度。振(zhen)弦(xian)式(shi)(shi)應(ying)(ying)(ying)(ying)(ying)變(bian)(bian)計(ji)(ji)(ji)內(nei)附(fu)有智(zhi)能(neng)識(shi)別(bie)芯(xin)(xin)(xin)片(pian)，其內(nei)存貯(zhu)有該應(ying)(ying)(ying)(ying)(ying)變(bian)(bian)計(ji)(ji)(ji)的(de)編號(hao)、系數(shu)K、溫度修正系數(shu)b等信息(xi)(xi)。用(yong)(yong)(yong)讀(du)數(shu)儀(yi)測(ce)(ce)量(liang)(liang)(liang)時(shi)會自動(dong)將識(shi)別(bie)信息(xi)(xi)讀(du)出(chu)，順序存入(ru)讀(du)數(shu)儀(yi)內(nei)，通(tong)訊給計(ji)(ji)(ji)算機，方便快速統計(ji)(ji)(ji)計(ji)(ji)(ji)算及(ji)查詢，使(shi)(shi)測(ce)(ce)量(liang)(liang)(liang)實現人工(gong)智(zhi)能(neng)無紙化操作。工(gong)程(cheng)現場多(duo)支應(ying)(ying)(ying)(ying)(ying)變(bian)(bian)計(ji)(ji)(ji)電纜(lan)被(bei)意外挖斷(duan)，用(yong)(yong)(yong)讀(du)數(shu)儀(yi)測(ce)(ce)量(liang)(liang)(liang)一遍，自動(dong)識(shi)別(bie)出(chu)每支應(ying)(ying)(ying)(ying)(ying)變(bian)(bian)計(ji)(ji)(ji)所(suo)對應(ying)(ying)(ying)(ying)(ying)的(de)編號(hao)及(ji)身份信息(xi)(xi)。2.應(ying)(ying)(ying)(ying)(ying)變(bian)(bian)計(ji)(ji)(ji)故障排查，當振(zhen)弦(xian)式(shi)(shi)應(ying)(ying)(ying)(ying)(ying)變(bian)(bian)計(ji)(ji)(ji)測(ce)(ce)量(liang)(liang)(liang)出(chu)現故障時(shi)，可用(yong)(yong)(yong)萬用(yong)(yong)(yong)表(biao)(biao)檢查應(ying)(ying)(ying)(ying)(ying)變(bian)(bian)計(ji)(ji)(ji)芯(xin)(xin)(xin)線(xian)間(jian)的(de)電阻值，其正常狀況紅、黑(hei)芯(xin)(xin)(xin)線(xian)電阻值通(tong)常為(wei)300Ω左右(you)；綠、白(bai)(bai)芯(xin)(xin)(xin)線(xian)電阻值在溫度25℃時(shi)應(ying)(ying)(ying)(ying)(ying)為(wei)3kΩ左右(you)；紅、黑(hei)線(xian)對綠、白(bai)(bai)線(xian)或對屏(ping)蔽線(xian)(裸(luo)線(xian))間(jian)絕(jue)緣(yuan)電阻值應(ying)(ying)(ying)(ying)(ying)﹥50MΩ(測(ce)(ce)量(liang)(liang)(liang)絕(jue)緣(yuan)電阻時(shi)可使(shi)(shi)用(yong)(yong)(yong)100V直流兆歐(ou)表(biao)(biao)，萬用(yong)(yong)(yong)表(biao)(biao)測(ce)(ce)量(liang)(liang)(liang)絕(jue)緣(yuan)電阻應(ying)(ying)(ying)(ying)(ying)用(yong)(yong)(yong)MΩ檔，其值應(ying)(ying)(ying)(ying)(ying)為(wei)無窮大∞)。天津振(zhen)弦(xian)式(shi)(shi)埋入(ru)式(shi)(shi)應(ying)(ying)(ying)(ying)(ying)變(bian)(bian)計(ji)(ji)(ji)好不好表(biao)(biao)貼式(shi)(shi)應(ying)(ying)(ying)(ying)(ying)變(bian)(bian)計(ji)(ji)(ji)為(wei)振(zhen)弦(xian)式(shi)(shi)彈性梁結構，適用(yong)(yong)(yong)于焊(han)接(jie)(jie)到各種鋼結構的(de)場合。

常用的電阻應變計：1、短接式應變計，短接式應變計也有紙基和膠基等種類。短接式應變計由于在橫向用粗銅導線短接，因而橫向效應系數很小(<0.1%)，這是短接式應變計的較大優點。另外，在制造過程中敏感柵的形狀較易保證，故測量精度高。但由于它的焊點多，焊點處截面變化劇烈，因而這種應變計疲勞壽命短。2、金屬箔式應變計，箔式應變計的敏感柵是用厚度為0.002～0.005毫米的銅鎳合金或鎳鉻合金的金屬箔，采用刻圖、制版、光刻及腐蝕等工藝過程而制成。基底是在箔的另一面涂上樹脂膠，經過加溫聚合而成，基底的厚度一般為0.03～0.05mm。

振(zhen)弦(xian)(xian)式應(ying)(ying)(ying)(ying)(ying)(ying)(ying)變(bian)計(ji)可(ke)(ke)測(ce)量(liang)鋼(gang)(gang)或(huo)混(hun)(hun)凝土結構(gou)(gou)的(de)應(ying)(ying)(ying)(ying)(ying)(ying)(ying)變(bian)，測(ce)量(liang)值(zhi)用(yong)于計(ji)算結構(gou)(gou)荷載(zai)或(huo)應(ying)(ying)(ying)(ying)(ying)(ying)(ying)力。應(ying)(ying)(ying)(ying)(ying)(ying)(ying)變(bian)計(ji)可(ke)(ke)通過電弧焊(han)接端(duan)塊(kuai)(kuai)固定在(zai)(zai)(zai)鋼(gang)(gang)結構(gou)(gou)上，在(zai)(zai)(zai)混(hun)(hun)凝土表(biao)面，則可(ke)(ke)以(yi)通過安裝(zhuang)塊(kuai)(kuai)（包(bao)括鋼(gang)(gang)筋螺栓）安裝(zhuang)。埋入(ru)式應(ying)(ying)(ying)(ying)(ying)(ying)(ying)變(bian)計(ji)澆(jiao)鑄在(zai)(zai)(zai)混(hun)(hun)凝土結構(gou)(gou)中，也可(ke)(ke)作為(wei)“噴(pen)漿混(hun)(hun)凝土”模型，帶(dai)有(you)可(ke)(ke)調的(de)張(zhang)(zhang)緊(jin)環。對于混(hun)(hun)凝土的(de)高(gao)壓力，例如在(zai)(zai)(zai)深(shen)樁中，建(jian)議使用(yong)埋入(ru)式應(ying)(ying)(ying)(ying)(ying)(ying)(ying)變(bian)計(ji)進行(xing)深(shen)部應(ying)(ying)(ying)(ying)(ying)(ying)(ying)用(yong)。工作原理，張(zhang)(zhang)緊(jin)的(de)鋼(gang)(gang)弦(xian)(xian)在(zai)(zai)(zai)拉(la)動(dong)時會以(yi)其共(gong)振(zhen)頻(pin)率(lv)振(zhen)動(dong)，這(zhe)個頻(pin)率(lv)的(de)平(ping)方與鋼(gang)(gang)弦(xian)(xian)的(de)應(ying)(ying)(ying)(ying)(ying)(ying)(ying)變(bian)成(cheng)正比。為(wei)了利用(yong)這(zhe)一(yi)原理，振(zhen)弦(xian)(xian)式應(ying)(ying)(ying)(ying)(ying)(ying)(ying)變(bian)計(ji)被(bei)(bei)設計(ji)為(wei)在(zai)(zai)(zai)固定結構(gou)(gou)上的(de)兩(liang)個端(duan)塊(kuai)(kuai)之(zhi)間(jian)保持鋼(gang)(gang)弦(xian)(xian)的(de)張(zhang)(zhang)力，一(yi)個電磁(ci)線圈組件(jian)被(bei)(bei)用(yong)來激勵鋼(gang)(gang)弦(xian)(xian)，然后(hou)將(jiang)頻(pin)率(lv)信(xin)號返回(hui)給讀數單元(yuan)。結構(gou)(gou)的(de)變(bian)形會改變(bian)兩(liang)個端(duan)塊(kuai)(kuai)之(zhi)間(jian)的(de)距離，從而改變(bian)鋼(gang)(gang)弦(xian)(xian)的(de)張(zhang)(zhang)力及其共(gong)振(zhen)頻(pin)率(lv)。返回(hui)的(de)信(xin)號轉換(huan)為(wei)微應(ying)(ying)(ying)(ying)(ying)(ying)(ying)變(bian)單位(wei)。而應(ying)(ying)(ying)(ying)(ying)(ying)(ying)變(bian)計(ji)可(ke)(ke)在(zai)(zai)(zai)距其位(wei)置(zhi)1000米的(de)范圍內進行(xing)數據讀取(qu)。應(ying)(ying)(ying)(ying)(ying)(ying)(ying)變(bian)計(ji)具有(you)內置(zhi)的(de)熱(re)敏電阻，可(ke)(ke)在(zai)(zai)(zai)必(bi)要時提(ti)供溫度數據以(yi)檢測(ce)熱(re)效應(ying)(ying)(ying)(ying)(ying)(ying)(ying)。應(ying)(ying)(ying)(ying)(ying)(ying)(ying)變(bian)計(ji)的(de)安裝(zhuang)均應(ying)(ying)(ying)(ying)(ying)(ying)(ying)保持與支撐軸(zhou)線平(ping)行(xing)。

金(jin)屬(shu)(shu)電阻(zu)應(ying)(ying)(ying)(ying)變(bian)(bian)(bian)(bian)(bian)計(ji)還可(ke)(ke)以按敏感柵(zha)(zha)(zha)(zha)的結構形狀分為(wei)(wei)下(xia)(xia)述幾類：(1)單軸(zhou)應(ying)(ying)(ying)(ying)變(bian)(bian)(bian)(bian)(bian)計(ji)：單軸(zhou)應(ying)(ying)(ying)(ying)變(bian)(bian)(bian)(bian)(bian)計(ji)一般是指具有一個敏感柵(zha)(zha)(zha)(zha)的應(ying)(ying)(ying)(ying)變(bian)(bian)(bian)(bian)(bian)計(ji)。這(zhe)種(zhong)應(ying)(ying)(ying)(ying)變(bian)(bian)(bian)(bian)(bian)計(ji)可(ke)(ke)用來測量(liang)單向應(ying)(ying)(ying)(ying)變(bian)(bian)(bian)(bian)(bian)。(2)單軸(zhou)多(duo)柵(zha)(zha)(zha)(zha)應(ying)(ying)(ying)(ying)變(bian)(bian)(bian)(bian)(bian)計(ji)：把(ba)幾個單軸(zhou)敏感柵(zha)(zha)(zha)(zha)粘貼在(zai)同一個基底上(shang)，可(ke)(ke)構成(cheng)平(ping)(ping)行軸(zhou)多(duo)柵(zha)(zha)(zha)(zha)和(he)同軸(zhou)多(duo)柵(zha)(zha)(zha)(zha)，這(zhe)種(zhong)應(ying)(ying)(ying)(ying)變(bian)(bian)(bian)(bian)(bian)計(ji)可(ke)(ke)方(fang)便地測量(liang)構件表面的應(ying)(ying)(ying)(ying)變(bian)(bian)(bian)(bian)(bian)梯度(du)。(3)應(ying)(ying)(ying)(ying)變(bian)(bian)(bian)(bian)(bian)花(hua)(多(duo)軸(zhou)應(ying)(ying)(ying)(ying)變(bian)(bian)(bian)(bian)(bian)計(ji))：具有兩個或兩個以上(shang)軸(zhou)線相交成(cheng)一定(ding)角度(du)的敏感柵(zha)(zha)(zha)(zha)制(zhi)成(cheng)的應(ying)(ying)(ying)(ying)變(bian)(bian)(bian)(bian)(bian)計(ji)稱為(wei)(wei)多(duo)軸(zhou)應(ying)(ying)(ying)(ying)變(bian)(bian)(bian)(bian)(bian)計(ji)，也稱為(wei)(wei)應(ying)(ying)(ying)(ying)變(bian)(bian)(bian)(bian)(bian)花(hua)其敏感柵(zha)(zha)(zha)(zha)可(ke)(ke)由金(jin)屬(shu)(shu)絲或金(jin)屬(shu)(shu)箔制(zhi)成(cheng)。采用應(ying)(ying)(ying)(ying)變(bian)(bian)(bian)(bian)(bian)花(hua)可(ke)(ke)方(fang)便地測定(ding)平(ping)(ping)面應(ying)(ying)(ying)(ying)變(bian)(bian)(bian)(bian)(bian)狀態下(xia)(xia)構件上(shang)某(mou)一點(dian)處(chu)的應(ying)(ying)(ying)(ying)變(bian)(bian)(bian)(bian)(bian)。應(ying)(ying)(ying)(ying)變(bian)(bian)(bian)(bian)(bian)計(ji)在(zai)使用前(qian)，要(yao)(yao)用脫脂棉(mian)浸無(wu)水乙醇(chun)擦洗，注意兩面都要(yao)(yao)清(qing)洗。長春振弦式土壓力(li)應(ying)(ying)(ying)(ying)變(bian)(bian)(bian)(bian)(bian)計(ji)哪家好

為(wei)保證應變計粘貼位置的準確，可用無油圓珠筆芯或劃(hua)針在貼片部位輕(qing)輕(qing)劃(hua)出定(ding)位線。長春振弦式土(tu)壓力應變計哪家(jia)好

雙(shuang)(shuang)層應(ying)(ying)變(bian)(bian)(bian)(bian)(bian)計，在(zai)進(jin)行薄(bo)殼、薄(bo)板(ban)應(ying)(ying)變(bian)(bian)(bian)(bian)(bian)的測(ce)(ce)(ce)量時，需要在(zai)殼和板(ban)的內、外(wai)表(biao)面(mian)對稱貼(tie)(tie)片。而對于體積小或(huo)密封的結構(gou)在(zai)內表(biao)面(mian)貼(tie)(tie)片幾乎是無法(fa)進(jin)行的，雙(shuang)(shuang)層應(ying)(ying)變(bian)(bian)(bian)(bian)(bian)計為解決這(zhe)些問題提供了(le)條(tiao)件。在(zai)不(bu)太厚的塑料(liao)上、下(xia)表(biao)面(mian)粘(zhan)貼(tie)(tie)應(ying)(ying)變(bian)(bian)(bian)(bian)(bian)計，并在(zai)應(ying)(ying)變(bian)(bian)(bian)(bian)(bian)計表(biao)面(mian)涂環氧樹(shu)脂(zhi)保護層。使用(yong)(yong)時將此(ci)雙(shuang)(shuang)層應(ying)(ying)變(bian)(bian)(bian)(bian)(bian)計粘(zhan)貼(tie)(tie)在(zai)被(bei)測(ce)(ce)(ce)構(gou)件的外(wai)表(biao)面(mian)，利用(yong)(yong)彎曲(qu)(qu)應(ying)(ying)變(bian)(bian)(bian)(bian)(bian)線(xian)性(xing)分布(bu)及(ji)軸向(xiang)應(ying)(ying)變(bian)(bian)(bian)(bian)(bian)均勻分布(bu)特(te)點(dian)，同時測(ce)(ce)(ce)出彎曲(qu)(qu)及(ji)軸向(xiang)應(ying)(ying)變(bian)(bian)(bian)(bian)(bian)。防(fang)水應(ying)(ying)變(bian)(bian)(bian)(bian)(bian)計，在(zai)潮濕環境或(huo)水下(xia)，特(te)別在(zai)高水壓作用(yong)(yong)下(xia)，應(ying)(ying)采(cai)用(yong)(yong)防(fang)水應(ying)(ying)變(bian)(bian)(bian)(bian)(bian)計。常溫短期(qi)(qi)水下(xia)應(ying)(ying)變(bian)(bian)(bian)(bian)(bian)量測(ce)(ce)(ce)可(ke)在(zai)箔(bo)式應(ying)(ying)變(bian)(bian)(bian)(bian)(bian)計表(biao)面(mian)涂防(fang)護層(如水下(xia)環氧樹(shu)脂(zhi))。長(chang)期(qi)(qi)量測(ce)(ce)(ce)可(ke)用(yong)(yong)熱塑方法(fa)將應(ying)(ying)變(bian)(bian)(bian)(bian)(bian)計夾在(zai)兩(liang)塊薄(bo)塑料(liao)板(ban)中間，或(huo)采(cai)用(yong)(yong)防(fang)水、防(fang)霉、防(fang)腐蝕的特(te)種膠(jiao)材料(liao)作為應(ying)(ying)變(bian)(bian)(bian)(bian)(bian)計的基底和覆蓋層制(zhi)成防(fang)水應(ying)(ying)變(bian)(bian)(bian)(bian)(bian)計。長(chang)春振弦式土(tu)壓力應(ying)(ying)變(bian)(bian)(bian)(bian)(bian)計哪家(jia)好

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