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China Hongyang Group, is an integrated enterprise with the research & development, production and marketing of Fuel Dispenser and related accessories as well as service station concerning equipments. It concentrates on the relative manufacture & services of filling station such as Hongyang tax control Fuel dispenser, IC Card fuel dispenser, manage system of network for stations, submerge pump and liquid level devise. China Hongyang Group, designed supplier of SinoPec and PetrolChina, our HONGYANG products have been sold to over 50 countries in South-east Asia, Mid-east, Africa, Europe and well received in their markets.

erally is mounted centrifugal pump installed in tank. The inlet pressure of fuel dispenser with submersible pump is higher than atmospheric pressure. Submersible pump consists of pump, connecting pipeline and controller. The appearance of submersible pump and its position in tank is showed in diagram 2-10. Diagram 2-10: Submersible pump position and figure Submersible pump is composed fuel dispenser of motor and centrifugal pump. Pump motor includes electromotor, wiring panel, overheat protector and pipeline; centrifugal pump has the elements of filter, anti-static subassembly, impeller and pump axis. Diagram 2-11: Main structure of submersible pump Connecting pipeline has two types of fixed and stretched. The former type consists of oil pipe, vapor-recovery pipe, lead pipe and wire. The later type is formed by oil pipe, vapor-recovery pipe, adjusting nut, lead pipe and motor wire. Controller is divided as two parts, upper and lower. Upper part have these components junction box, electric bridge, capacitor, exhausting plug, check valve, pressure adjustor, testing interface of exhaustion and pressure, leakage monitor of pipe. However, lower part is constituted by pipe jointer, lead terminals, pump holder, etc. By function, submersible pump is classified as four categories, namely, standard type, enhanced type, changing-frequency type and large flow type. The standard type access to general requirements, but the enhanced type not only increase flux than standard type, but also available to mix liquid of gasoline with alcohol. The changing- frequency submersible pump adopt pipe pressure to judge flux. Given a situation in inefficient flux and low fuel dispenser pressure the electric frequency of motor would tune high through computer, so as to elevate rotate speed and increase flux. Contrarily, to reduce electric frequency fuel dispenser and rotate speed as pipe pressure being low, adjusting appropriate flowage. The large flow type is adapted in filing station in where needs quickly operation. Some submersible pump has the flow speed of more

lure Complete failure.　　 DeviceUnavailable Complete failure. No further request will be successful because a device is unavailable (e.g.　　 printer)　　 Aborted Complete failure. The transaction was aborted by cashier or customer or an Abort Request.　　 TimedOut fuel dispenser Complete failure. No response from remote host.　　 FormatError Complete failure. The request cannot be handled or is mistakenly formatted.　　 ParsingError Complete failure. The request XML is not well formed　　 ValidationError Complete failure. The request XML is not validated agains the definition schema　　 MissingMandatoryData Complete failure. The request message is missing necessary data　　 Attributes Name Type Use Annotation　　 RequestType ServiceRequestType Required Gives the type of request. Echo of request.　　 ApplicationSender ApplicationType Optional Identifies the application sending the request. Usually　　 the POS Sell application. Echo.　　 WorkstationID WorkstationIDType Required Identifies the workstation answering the request. Usually　　 the POS (more than one POS can be present)　　 POPID POPIDType optional Necessary when Point Of Payment is fuel dispenser not coincident　　 with Workstation or the ApplicationSender; it is different　　 fuel dispenser from the TerminalID that is assigned (statically or　　

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