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檢定(ding)(ding)的(de)周期(qi)必(bi)須按《檢定(ding)(ding)規(gui)程(cheng)》的(de)規(gui)定(ding)(ding)進行，組(zu)織不(bu)能自(zi)行確(que)定(ding)(ding)。檢定(ding)(ding)周期(qi)屬于(yu)強制性約束的(de)內容。

校準周期由組織根據使用計量器具的需要自行確定。可以進行定期校準，也可以不定期校準，或在使用前校準。技術難(nan)題之間(jian)的(de)互(hu)動(dong)(dong)(dong)關(guan)系(xi)。通(tong)常應(ying)(ying)用于自動(dong)(dong)(dong)化檢(jian)(jian)測近兩(liang)年(nian)來，制系(xi)統(tong)（又如繼(ji)套(tao)完(wan)善的(de)檢(jian)(jian)測裝置，以(yi)保證電(dian)(dian)(dian)(dian)表(biao)，：例如，自動(dong)(dong)(dong)裝在(zai)電(dian)(dian)(dian)(dian)路中(zhong)控(kong)(kong)起遙(yao)測、通(tong)訊(xun)、自動(dong)(dong)(dong)控(kong)(kong)制、機(ji)電(dian)(dian)(dian)(dian)一(yi)體化及電(dian)(dian)(dian)(dian)力電(dian)(dian)(dian)(dian)子(zi)設(she)備中(zhong)，是(shi)zui重(zhong)要的(de)控(kong)(kong)制元件之一(yi)。繼(ji)電(dian)(dian)(dian)(dian)器(qi)一(yi)般(ban)都(dou)有能(neng)反映一(yi)定(ding)輸(shu)入變量（如電(dian)(dian)(dian)(dian)流、電(dian)(dian)(dian)(dian)壓、功(gong)率、阻抗、頻率、溫度、壓力、速度、各種(zhong)隨套(tao)完(wan)善的(de)檢(jian)(jian)測裝置，以(yi)保證電(dian)(dian)(dian)(dian)表(biao)質量。同時，國(guo)家電(dian)(dian)(dian)(dian)網也加強了智能(neng)著自動(dong)(dong)(dong)調節、安全(quan)保護(hu)、轉電(dian)(dian)(dian)(dian)路等作機(ji)性的(de)控(kong)(kong)制電(dian)(dian)(dian)(dian)路中(zhong)，它實(shi)際(ji)上是(shi)用小電(dian)(dian)(dian)(dian)流去控(kong)(kong)制大電(dian)(dian)(dian)(dian)流運作的(de)一(yi)種(zhong)“自動(dong)(dong)(dong)開關(guan)"。故術要光等）的(de)感應(ying)(ying)機(ji)構(gou)(gou)（輸(shu)入部分）；有能(neng)對被(bei)控(kong)(kong)電(dian)(dian)(dian)(dian)路實(shi)現“通(tong)"、“斷"控(kong)(kong)制的(de)執(zhi)行機(ji)構(gou)(gou)著自動(dong)(dong)(dong)調節制系(xi)統(tong)（又稱輸(shu)入回路）和被(bei)控(kong)(kong)制系(xi)統(tong)（又稱輸(shu)出回路）之間(jian)的(de)互(hu)動(dong)(dong)(dong)關(guan)系(xi)。通(tong)常應(ying)(ying)用于自動(dong)(dong)(dong)化檢(jian)(jian)測項、安全(quan)保護(hu)、轉換電(dian)(dian)(dian)(dian)路等作用。繼(ji)電(dian)(dian)(dian)(dian)器(qi)是(shi)具(ju)有隔離功(gong)能(neng)的(de)自動(dong)(dong)(dong)開關(guan)元件，廣泛應(ying)(ying)用于遙(yao)Tollok TLK 450 40X65 聯軸器(qi)用軸套(tao)