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電解質(zhì)分析儀常見故障的處理

時間:2011/10/13閱讀:2038
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 電解質(zhì)分析儀是采用**的離子選擇電極測量技術(shù)來實現(xiàn)檢測,是一種快速、準(zhǔn)確、方便、實用的臨床檢驗設(shè)備。1、當(dāng)出現(xiàn)檢測器失效時如何解決檢測器失效時的原因有4種:①檢測器的插頭與主機板座松了;②檢測器本身壞了;③閥芯上的固定螺釘與電機轉(zhuǎn)動軸未緊固到位;④閥芯本身太緊不能轉(zhuǎn)動。檢查的順序依次為③-①-④-②?!?、吸樣不暢的原因及處理方法吸樣不暢的原因主要有以下4種,沿著“由簡單到復(fù)雜”的思路來檢查;①檢查管路各個接口(包括電極之間的連管、電極與閥之間、電極與泵管之間)的連管有無漏氣,此種現(xiàn)象表現(xiàn)為不吸樣;②檢查泵管是否粘連或過于疲勞,此時應(yīng)更換新泵管?,F(xiàn)象表現(xiàn)為泵管發(fā)出異常聲音;③各管道內(nèi)尤其是各接頭處有蛋白沉淀,此種現(xiàn)象表現(xiàn)為液流速度過程定位不穩(wěn),即使換了新泵管也是一樣,解決辦法為取下各接頭用水清洗干凈。④閥本身有問題,要仔細地檢查。3、電極漂移與失控的原因及處理 ?、匐姌O漂移的zui常見的原因是地線未接好,應(yīng)檢查地線;檢查漂移的電極銀棒是否未插入信號插座或接觸不良;②電壓不穩(wěn)定,接UPS不間斷電源或質(zhì)量較好的穩(wěn)壓電源(質(zhì)量差的穩(wěn)壓電源會引起電極漂移);③避免電磁干擾,功率較大的設(shè)備應(yīng)盡量遠離本儀器,獨立設(shè)置電源;④檢查標(biāo)準(zhǔn)液及清洗液是否已用完;檢查流通池中參比內(nèi)充液是否太少,應(yīng)及時注滿;⑤Na、pH電極漂移時應(yīng)用玻璃電極清洗液清洗。再用蒸餾水反復(fù)沖洗即可;⑥如果電極全部漂移,則應(yīng)檢查參比電極是否到期;⑦定位不好,造成溶液未全部浸沒電極,應(yīng)重新進行定位操作;⑧參比電極上方有氣泡,應(yīng)輕拍流通池,將氣泡移到Na電極上方;⑨試劑過期或被污染,檢查A、B標(biāo)準(zhǔn)液及清洗液瓶,是否有絮狀沉淀。4、電極斜率降低時,如何處理電極斜率低,將造成測試線性不好,有時也影響電極的重復(fù)性,其主要原因有:①電極膜板上吸附蛋白過多;②空氣濕度太大;?、蹨囟忍?;④壽命將至。第4種情況用戶需要更換電極,第1種可以用去蛋白液進行處理,Na和pH電極有專門的清洗液,其余電極可用由一片蛋白酶溶解在30m10.1M鹽酸內(nèi)配成的蛋白清洗液,用服務(wù)程序*項清洗功能來反復(fù)清洗,清除蛋白,然后用PVC清洗液沖洗數(shù)次,標(biāo)定穩(wěn)定后測樣。第2和第3種情況主要對Na和pH電極有影響,空氣濕度太大,應(yīng)選用抽濕機進行抽濕;溫度過低,可在室內(nèi)升溫。如無這兩種條件,可在測量前用電吹風(fēng)機將Na電極、pH電極、信號板加熱及去潮。5、測試血樣出現(xiàn)異常值原因及解決方法當(dāng)測試血樣時,如果出現(xiàn)異常值,按以下步驟進行檢查:①附近是否有大功率電器開動或漏電(如離心機、電冰箱),造成電壓波動;②測試時吸入凝血;③溶液未到位,可查看定位是否良好,如果溶液到位不好,可用服務(wù)程序中重新定位程序來進行重新定位;④檢查盛血樣的容器是否污染,是否殘留了消毒液等物質(zhì);⑤查看校正因子是否正確,如有異常,可將校正因子清除;⑥是否長時間未標(biāo)定,可重新標(biāo)定后再測。

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