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儀器儀表的檢修原則

時(shí)間:2011/11/16閱讀:726
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 裝修工人有時(shí)需要對一些儀器儀表進(jìn)行檢修,為了正確而有效地實(shí)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(dòng)手,先電源后部件,先外后內(nèi),先靜后動(dòng),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(dòng)手: 在檢修中必須自始至終地注意冷靜的分析,避免盲目動(dòng)手,這里提倡的思索,是有根據(jù)有目的的思索。先思索后動(dòng)手,是要在了解情況,綜合運(yùn)用理論做出必要的分析判斷的基礎(chǔ)上再動(dòng)手。
2、先電源后部件:電源是儀器儀表運(yùn)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(shí)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(shí)候,在避免震動(dòng)的同時(shí),就必須先斷電,這樣有效的保護(hù)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(shí),也可以避免部件啟動(dòng)、拆動(dòng)而降低質(zhì)量,甚至因拆卸不當(dāng)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(dòng):靜,指的是不加電對儀器儀表的檢查修理;動(dòng),;指的是加電后進(jìn)行的檢查修理。先靜后動(dòng)的理由是:確保人身安全和儀器儀表安全,同時(shí)也可以預(yù)先排除一些故障。但必須說明一點(diǎn),在檢修過程中靜與動(dòng)是經(jīng)常靈活地交替進(jìn)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(shí),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(shí)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(yùn)用。當(dāng)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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