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        使用者使用可燃性氣體檢測儀故障分析及對策

        分類:
        公司新聞
        作者:
        來源:
        2018-03-28

          (一)使用者使用不當

          使用者使用探測器過程中,將空調和取暖設備靠近可燃性氣體檢測儀安裝,當使用空調和取暖設備的過程中,如果冷、暖氣流直接吹過可燃氣體報警器,就有可能造成可燃氣體報警器鉑絲的電阻率發生變化出現誤差,因此可燃氣體報警器應遠離空調、取暖設備,避免設置位置不當引發故障。使用者使用可燃性氣體檢測儀過程中還應注意防電磁干擾。可燃氣體報警器安裝位置、安裝角度、防護措施以及系統布線等方面應防電磁干擾。電磁環境對可燃氣體報警器的影響途徑主要有三條:空中電磁波干擾、電源及其他輸入輸出線上的窄脈沖群以及人體靜電。例如:可燃氣體報警器接近空調安裝時,將會引起系統的探測出現偏差;探測線路與動力線、照明線等強電線路間距較小,而未加防電磁干擾措施,系統亦將產生探測偏差。使用者使用可燃性氣體檢測儀過程中應注意易引起故障的因素,如:灰塵、高溫、潮濕、雨淋等。當安裝可燃氣體報警器的場所需安裝排氣扇時,排氣扇如與可燃性氣體檢測儀相鄰設置,泄漏的可燃氣體將無法充分擴散到可燃氣體報警器附近,造成不能及時探測,怡誤戰機。另外使用者還應注意防爆場所的可燃性氣體檢測儀的設置,如散發可燃氣體的甲類廠房應選用防爆型的可燃氣體報警器,其防爆等級不應低于現行規范相應的防爆等級要求。使用者使用可燃性氣體檢測儀還應注意避免高溫、高濕、蒸汽、油煙可到的地方。探測器上勿放置物品或掛置物品。裝好的可燃性氣體檢測儀不能任意移動裝置的位置。使用者使用可燃氣體報警器盡量選用傳感器探頭可更換的產品,以便于使用。

          (二)施工過程不規范

          施工過程不規范會在使用過程中使可燃性氣體檢測儀探測故障。如可燃性氣體檢測儀未設在設備易于泄漏可燃氣體附近,或安裝時與排氣扇相鄰設置,泄漏的可燃氣體無法充分擴散到可燃性氣體檢測儀附近,從而使泄漏險情無法及時被可燃性氣體檢測儀探知。對于住宅內可燃性氣體檢測儀應安裝在廚房內的燃氣管道、灶具附近,當住戶使用的是天然氣,燃氣探測器吸頂棚安裝距頂棚300mm以內的地方;當住戶使用的是液化石油氣,燃氣探測器應安裝在距地面300mm以內地方。可燃性氣體檢測儀如不可靠接地,不能消除電磁干擾,必將影響電壓,出現探測數據不準的故障。所以可燃性氣體檢測儀施工過程中應可靠接地。可燃性氣體檢測儀及接線端子設于易遭受碰撞或易進水處,造成電器線路斷路或短路。焊接必須用無腐蝕的助焊劑,不然接頭處腐蝕脫開或增加線路電阻,影響正常探測。探測器勿掉落或拋落于地。施工完后應進行調試,保證可燃氣體報警器處于正常工作狀態。

          (三)、維護保養

          可燃性氣體檢測儀要檢知可燃氣體信息,必須使得探測器和檢測環境溝通,所以環境中的各種污染性氣體和積塵進入探測器是無法避免的,其對探測器造成的工作條件的損壞是客觀的存在,可燃性氣體檢測儀工作環境較為惡劣,有許多安裝在室外,維護保養不善將會導致可燃氣體報警器探測出現誤差或不探測。因而定期對可燃性氣體檢測儀進行清洗、保養是防止發生故障的一個重要工作。

          接地應定期檢測,接地達不到標準要求,或根本未接地,也會使可燃性氣體檢測儀易受電磁干擾,造成故障。防止元件老化起的。從可靠性考慮,同時實踐業已證明,可燃性氣體檢測儀服役期超過10年的系統由元件老化引起的故障趨于增加,因此服役期超過使用規定要求的,應及時更換。

        關鍵詞:
        彩票33

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