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：
000-000-0000A4021A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
