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        1. 上海乾思生物科技有限公司
          中級會員 | 第16年

          18916423352

          細胞庫
          優(yōu)勢品牌
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          SIGMA現(xiàn)貨,SIGMA代理

          儀器儀表的檢修原則

          時間:2011/11/16閱讀:729
          分享:

           裝修工人有時需要對一些儀器儀表進行檢修,為了正確而有效地實施檢修,確保檢修質(zhì)量和安全,避免在檢修中走彎路,迅速排除電路故障,必須遵守檢修原則。即先思索后動手,先電源后部件,先外后內(nèi),先靜后動,先簡后繁,先通病后其他等。這些是裝配工人在檢修中一般所遵守的原則。下邊對六原則加以分析說明:

          1、先思索后動手: 在檢修中必須自始至終地注意冷靜的分析,避免盲目動手,這里提倡的思索,是有根據(jù)有目的的思索。先思索后動手,是要在了解情況,綜合運用理論做出必要的分析判斷的基礎(chǔ)上再動手。
          2、先電源后部件:電源是儀器儀表運行的工作來源,部件是儀器儀表正常工作*的條件,電源和部件不正常,儀器儀表也不可能正常工作。同時電源電壓不正常,過高或過低,部件短路或開路,還有可能損壞儀器儀表,造成事故。此外,電源和部件在使用中產(chǎn)生故障較多,排除也比較容易,所以,應(yīng)按先電源后部件的原則修理。在檢修氧化鋯氧氣含量分析儀的時候,在避免震動的同時,就必須先斷電,這樣有效的保護鋯管的安全
          3、先外后內(nèi):所謂的外,指的是暴露在儀器儀表外邊的部分,如連線、插接組件等。所謂內(nèi)指的是儀器儀表內(nèi)部。先外后內(nèi)的理由是:外部檢查修理比較簡便,外部能修復(fù)的,就不必深入到內(nèi)部,以免走彎路。同時,也可以避免部件啟動、拆動而降低質(zhì)量,甚至因拆卸不當而損壞儀器儀表;另外,一般暴露在外面的儀器儀表也容易損壞。
          4、先靜后動:靜,指的是不加電對儀器儀表的檢查修理;動,;指的是加電后進行的檢查修理。先靜后動的理由是:確保人身安全和儀器儀表安全,同時也可以預(yù)先排除一些故障。但必須說明一點,在檢修過程中靜與動是經(jīng)常靈活地交替進行的。
          5、先簡后繁:簡,指的是容易檢查、測量、修理的因素;繁,指的是比較難檢查、測量、修理的因素。其理由是:儀器儀表零部件、元器件很多,電路的結(jié)構(gòu)也比較復(fù)雜,發(fā)生故障的因素也比較多,但其中必有簡單易排和復(fù)雜難排的故障之分,按照先簡后繁、由易到難的原則,就可以迅速地排除掉容易的故障,使復(fù)雜的故障和難修理的故障孤立起來,這樣就化難為易了;同時,也可以防止毫無必要的大拆大卸,避免走彎路,拖延了檢修時間。
          6、先通病后其他:通病指的是儀器儀表經(jīng)常容易發(fā)生故障的地方,如電池、阻容元件、附件等。因此,在檢修過程中應(yīng)首先檢查儀器儀表的通病。上述的原則上相互的,在檢修過程中必須全面考慮,具體分析、靈活運用。當然,在檢修中,只掌握原則還不夠,還應(yīng)該掌握方法,具體問題具體對待,就對我公司產(chǎn)品,可以直接和我公司工程師。

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