產(chǎn)品詳情
氣體探測(cè)器是一種檢測(cè)氣體濃度的儀器。該儀器適用于存在可燃或有毒氣體的危險(xiǎn)場(chǎng)所,能長(zhǎng)期連續(xù)檢測(cè)空氣中被測(cè)氣體爆炸下限以內(nèi)的含量??蓮V泛應(yīng)用于燃?xì)猓突ぃ?/span>冶金,鋼鐵,煉焦,電力等存在可燃或有毒氣體的各個(gè)行業(yè),是保證財(cái)產(chǎn)和人身安全的理想監(jiān)測(cè)儀器。北美對(duì)氣體探測(cè)器需求逐年遞增,產(chǎn)品北美防爆認(rèn)證需要隨之上升。
北美(美國(guó)、加拿大和墨西哥)安全體系主要是指針對(duì)危險(xiǎn)場(chǎng)所用電氣設(shè)備的安裝、制造、使用、檢測(cè)認(rèn)證以及監(jiān)督所形成的有(國(guó)家)電氣法規(guī)(主要是美國(guó)國(guó)家電氣法規(guī)(NEC)和加拿大電氣法規(guī)(CEC))、標(biāo)準(zhǔn)制修訂組織、防爆電氣設(shè)備制造廠、用戶、第三方檢測(cè)認(rèn)證機(jī)構(gòu)和政府監(jiān)督機(jī)構(gòu)構(gòu)成六方安全體系。
爆炸性危險(xiǎn)場(chǎng)所涉及到許多行業(yè),所用到的電氣設(shè)備也種類繁多。在北美,負(fù)責(zé)制修訂與防爆產(chǎn)品有關(guān)的標(biāo)準(zhǔn)的組織機(jī)構(gòu)主要有:
* 美國(guó)安全檢測(cè)實(shí)驗(yàn)室公司(UL)
* 加拿大標(biāo)注協(xié)會(huì)(CSA)
* 電氣和電子工程師學(xué)會(huì)(IEEE)
* 儀器儀表、系統(tǒng)和自動(dòng)化學(xué)會(huì)(ISA)
* 礦用安全和管理局(MSHA)
* (美國(guó))全國(guó)電氣制造商協(xié)會(huì)(NEMA)
* 國(guó)家防火協(xié)會(huì)(NFPA)
氣體探測(cè)器的北美防爆認(rèn)證需要做安規(guī)、防爆和性能評(píng)估,其中標(biāo)準(zhǔn)如下:
1- Gas detection control panel
i. EN 60079-29-1, Explosive atmospheres. Electrical installations design,
selection and erection.
2 - Gas detector QB2000T
i. EN 60079-29-1, explosive atmospheres. Gas detectors. Perbance
requirements of detectors for flammable gases.
ii. EN 60079-29-4, Explosive atmospheres. Gas detectors. Perbance
requirements of open path detectors for flammable gases.
iii. EN 50402, Electrical apparatus for the detection and measurement
of combustible or toxic gases or vapor or of oxygen. Requirements on
the functional safety of fixed gas detection systems.
iv. EN 125 flame supervision devices for gas appliances.
viii. IEC 60335-1, Household and similar electrical appliances- Safety- Part
3-The General requirements of Gas detector
ix. IEC 60079-0, Explosive atmospheres- Equipment- General requirements.
x. IEC 60079-1, Explosive atmospheres- Equipment protection by flameproof
enclosures “d”.
xi. IEC 60079-11, Explosive atmospheres- Equipment protection by
intrinsic safety “i”.