Honeywell>阀门检漏控制器>A4021A1002
Honeywell阀门检漏控制器A4021A1002
- 产品型号： A4021A1002
- 产品描述： Honeywell阀门检漏控制器A4021A1002
- 咨询电话： 025-83704820，83705420
全国服务热线：
000-000-0000A4021A系列燃气检漏装置
品牌：Honeywell（霍尼韦尔）
产地：美国
APPLICATION
TheA4021isaself--checkingmicroprocessorbasedValveProvingSystem(VPS).TheA4021checkstheeffectiveclo-sureofautomaticshut--offvalvesbymeasuringthepressuredifferentialbetweentwovalvesduringthetestsequence.Subbaseandpressureswitcharerequiredtocompletethesystem.
WhenduringthetestsequenceoftheA4021afailingvalveisdetected,theA4021willgointoanon--volatilelock--outsta-tus,generatesanalarmandpreventsaburnerstart--up.Theintendedapplicationisforgasfiredpowerburnersandotherlargecapacitygasfiringinstallations,whereaccordingtotheEuropeannormEN676avalveprovingsystemcanbeusedasanalternativeforpre--purgingthecombustioncham-ber.Andforinstallationswithorwithoutpre--purgewithacapacityofmorethan1200kW
