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HONGYANG GROUP New Zealand Technical Center , Discuss Technical Problem , Suply After Service Online of Fuel Dispenser, Please Regist Firstly

FUEL DISPENSER & SPARE PARTS

fuel-dispenser

FUEL DISPENSER & SPARE PARTS

Fuel dispenser are used in petroleum-retail service stations for filling lightweight oil including gasoline or diesel etc. We have taken up the production of fuel dispenser since1992. Among our gigantic business portfolio, oil transfer pumps were first put on our agenda and then mechanical fuel dispensers, electronic fuel dispenser in subsequence.

Our fuel dispensers have 3 series, namely, C series, D series and S series. All of the series share the same electronic system, which consists of flow meter, combination pump, auto nozzle etc. But C series is little in size and has a general outline with hoses from the middle. And D series contains jambs with stainless steel and hoses from the top. Then S series have a novel streamline outline and hoses from the top, which is bigger in size in comparison with the other ones.

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    C/DC convert type switch power is universally adopted in fuel dispenser. Diagram 3-13: Structural sketch map of liner voltage stabilizing power Diagram 3-14: Structural sketch map of switch stable voltage power adopted DC/DC converter Diagram 3-15: Structural sketch map of switch voltage stabilizing power adopted pulse transformer As an electronic component in fuel dispenser, stable voltage power is easily failed and possibly leads to whole trouble of fuel dispenser once appear doesn’t work. Generally, liner voltage stabilizing power adopts 78 series special voltage stabilizing integrated circuit, such as 7805 and 7812, simple design and convenient maintenance. In Diagram 3-16, a popular liner voltage stabilizing power circuit of fuel dispenser is illustrated. Switch power supply adopted pulse transformer will not introduced here, reference with relevant boos when necessary. Diagram 3-16: Circuit diagram of liner voltage stabilizing power These integrated circuits of LM2576, LM4962 AND MC34063A are widely adopted in DC/DC transformer power supply. Intrinsic safety voltage stabilizing p fuel dispenser ower supply in fuel dispenser This kind of direct current is able to employ in flammable and combustible environment only when mounted safety barrier. It also called intrinsic safety voltage stabilizing power supply illustrated in Diagram 3-18. Explosion-proof power supply is only used in explosion-proof box or an atmosphere without explosive gas, including its associated circuit. It is allowed to employ intrinsic safety power in explosive atmo fuel dispenser sphere, but must in explosion-proof box or an environment without explosive gas. However, its associated circuit is permitted t fuel dispenser o use in explosive gas atmosphere if meet requirements concerned. The major difference between intrinsic safety power and explosion-proof power is whether install safety barrier. Diagram 3-17: Voltage stabilizing power circuit of DC/DC convertor Diagram 3-18: Sketch map of intrinsic safety power The function of setting a safety barrier i

technical specification

    ets pour longueur =255 :   octet de poids fort : bit 8 (MSB) ?1 et bits 7 ?1 codent le nombre 1 (0000001=   nombre d octets de longueur ?suivre)   octet de poids faible : bits 8 ?1 codent le nombre d octets de donn es   sur 3 octets pour longueur = 65535 :   octet de poids fort : bit 8 (MSB) ?1 et bit 7 ?bit 1 codent le nombre 2   (0000010= nombre d octets de longueur ?suivre)   octets interm diaire(s) et de poids faible : codent directement le nombre d octets de   donn es   7.3.2.3. Value (V)   Les donn es sont cod es directement dans leur format initial (ASCII ou binaire).   Eventuellement ce champ peut 猼re vide ce qui correspond ?une donn e absente; dans ce cas   L= 0 sur un octet.   7.3.3. Codage dun objet TLV compos   Dans le cadre de la liaison automate-mon tique on d finira deux types dobjets compos s:   1) simple: renferme plusieurs objets fuel dispenser l mentaires diff rents ou identiques (exemple: un   montant+nombre de d cimales+unit mon taire)   2) liste dobjets simples ou compos s identiques (exemple: liste de clefs)   7.3.3.1. Objet compos simple   Ce type dobjet ne renferme que des objets l mentaires. En utilisation il peut comporter tout  ou partie des objets l mentaires qui sont susceptibles de la composer et ceci dans u fuel dispenser n ordre ?priori  quelconque.  All right reserved � Imprim le 210203 13:02 fuel dispenser 36138   MPA V5.2: SPECIFICATIONS Ref : NT1118R5   TECHNIQUES Nb Pages : 138 + 0 PJ   de la LIAI

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    “Two years ago,�says Muhammad, a local trader of Indian origin, “I did not have time to sit down; now I m sitting doing nothing.�Though his shelves are full of clocks and radios made in China, he blames his enforced idleness on the competition brought by Chinese traders. Zambian and other African consumers do not share his despondency. They like Chinese prices. But in some countries consumers are less well organised than textile workers, and in South Africa the trade unions have succeeded in getting the government to negotiate quotas on Chinese clothing imports. Still, the power of China s productivity and economies of scale—never mind government subsidies—certainly hurts local industries. Textile factories in places like South Africa, Mauritius and Nigeria have been badly hit. In tiny Lesotho, where making clothes for Europe or America is the only industry around, this has been catastrophic. The working conditions, as well as the prices, set by Chinese employers are also a concern to some Africans. The alleged ill-treatment of workers in a Chinese-owned mine in Zambia in July led to a vi fuel dispenser olent protest in which several workers were shot. And many Chinese firms bring in much of their own labour, rather than hiring locals. China brought in thousands of its own workers to build the 1,860km (1,160- mile) Tazara railway between Lusaka and the Tanzanian port of Dar es Salaam in the 1970s. It was finished ahead of schedule, but Tanzania and Zambia still have to rely on Chinese technical help to maintain it. African hopes of technolog fuel dispenser y transfer may be over-optimistic. Human rights are optional Some say China s involvement will erode efforts to promo fuel dispenser te openness and reduce corruption, especially in oil and mining. Nigeria insists that Chinese companies must respect its new anti-graft measures, and the latest bidding round for oil blocks in Angola has been the most open so far. In both countries it is unclear whether China s presence is making corruption better or worse. It is