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Honeywell>閥門檢漏控制器>A4021A1002

Honeywell閥門檢漏控制器A4021A1002

  • 產(chǎn)品型號(hào): A4021A1002
  • 產(chǎn)品描述: Honeywell閥門檢漏控制器A4021A1002
  • 咨詢電話: 025-83704820,83705420

全國(guó)服務(wù)熱線:

000-000-0000

A4021A系列燃?xì)鈾z漏裝置

品牌:Honeywell(霍尼韋爾)

產(chǎn)地:美國(guó)


APPLICATION
TheA4021isaself--checkingmicroprocessorbasedValveProvingSystem(VPS).TheA4021checkstheeffectiveclo-sureofautomaticshut--offvalvesbymeasuringthepressuredifferentialbetweentwovalvesduringthetestsequence.Subbaseandpressureswitcharerequiredtocompletethesystem. WhenduringthetestsequenceoftheA4021afailingvalveisdetected,theA4021willgointoanon--volatilelock--outsta-tus,generatesanalarmandpreventsaburnerstart--up.Theintendedapplicationisforgasfiredpowerburnersandotherlargecapacitygasfiringinstallations,whereaccordingtotheEuropeannormEN676avalveprovingsystemcanbeusedasanalternativeforpre--purgingthecombustioncham-ber.Andforinstallationswithorwithoutpre--purgewithacapacityofmorethan1200kW



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