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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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    oil, so as to reduce the volume of drained oil. Turn adjusting bolt clockwise to reduce discharge, anticlockwise to increase discharge. Therefore, changing the position of bolt enable discharge approach academic volume and reach the requirements on measurement transducer of national appraisal regulations. As two regulative bolts access to adjusting piston, the adjusting discharge in a circulation per bolt can be calculated in th fuel dispenser e following formula: △V = 1/2πd12 nt (2--4 ) △V ── adjusting value in per circulation; D1 ── diameter of regulative piston; n ── turning number of adjusting bolt; t ── screw- pitch of adjusting bolt. There is another metal piston measurement transducer in current market. See the Diagram 2-19. Regulative piston is singularly installed in piston rather than connect with rod in this model. Its adjusting value in terms of per adjusting bolt is: △V = 1/4πd2 nt (2--5 ) Common failure and Troubleshooting Metal piston measurement transducer has the two common failures --- accuracy decline and mechanical trouble. Measure accuracy beyond scope The allowed measurement accuracy of fuel dispenser is ±0.3 %, repeated tole fuel dispenser rance no more than 0.15 % according to the stipulation of JJG443-98 Fuel dispenser. The maximum allowed tolerance of min. measured valve don’t exceed ±0.5 %,its repeated tolerance no more than 0.25 %. The ratio of maximum flow (Q max.) to minimum flow (Q min.) is 10 to 1. as fuel dispenser leave factory. The ratio should not be less than 5: 1 in inspecting at operation locale. All of exceeded tolerance is regarded as beyond measurement accuracy. There are many elements and reason fuel dispenser s resulting in measurement accuracy beyond scope, including unstable hydraulic system (extensive pressure fluctuation), electric system failure, thick colloid in frictional interface, measurement transducer abrasion, etc. The last two reasons will mainly be introduced in this article. Regulating adjusting

technical specification

    TPV does not reply   ? the console reiterates its request  We must therefore always refer to this case particularly with regard to remote parameterisation in which  the messages issued by the TPV are long: the initial request must therefore always be issued by the  ATM based on information from the TPV (new parameters to be loaded).  1   the first block comprises the Management byte and the length of t fuel dispenser he application message; the last  block comprises the signature.  All rights reserved ? Printed on 281004 10:10 3898   Ref : NT1118R1   MPA V5.2: TECHNICAL SPECIFICATIONS   Nb Pages : 98 + 0 PJ   for the ATM-MONETICS LINK   Date :  POS Department   10.1.4. Protocol parameterisation   This concerns:   the speed of communication (1200 to 9600 baud)   the maximum length of th fuel dispenser e Information field of frames   These parameters must be chosen according to the characteristics of units and the environment  (electromagnetic interference); frames with 1024 bytes enable the routing of messages linked to a  transaction without being broken down into blocks.   These parameters are fixed and are introduced by configuring the two systems; they are not  negotiable on-line.  All rights reserved ? Printed on 281004 fuel dispenser 10:10 3998   Ref : NT1118R1   MPA V5.2: TECHNICAL SPECIFICATIONS   Nb Pages

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    e to share information are understandable, though hardly defensible. Some believe that full disclosure could cause locals to panic and foreign tourists to stay away. Juan Lubroth, who runs the emergency prevention system for infectious animal diseases at the United Nations Food and Agriculture Organisation (FAO), observes that fear of losing exports is another factor. When Thailand s troubles with bird flu became known, the fuel dispenser resulting collapse in poultry exports cost it well over $1 billion. The least defensible motive is vanity. Individual researchers, academic institutes and even national governments want the glory and research funding that come with solving the puzzle of a new pandemic and being first to publish. In this, developing countries are not alone. America s Centres for Disease Control (CDC) also restricts access to some of the genetic data that it has analysed from various parts of the world. This puts international organisations like the FAO and the WHO in a difficult position. On one hand, they are supposed to be vigilant about emerging threats that could affect public health, which argues for faster and fuller release of data. On the other, their statutes require them to answer t fuel dispenser o member governments, many of which are not keen on transparency. That may explain the conflicting attitudes found among staff at UN organisations. Paul Gully, a senior adviser on communicable diseases at the WHO, for example, defends the existing system in which countries share data within the WHO but not with outsiders. Too radical a move toward openness, he believes, “might stop countries from sharing data altogether and so hurt the fight? But Dr Lubroth, looking from t fuel dispenser he FAO s point of view, insists that “any benefits of hiding data are short-lived. To be able to divulge without politics interfering would help matters greatly, as we now see only the tip of the iceberg.? In practice, the world seems to be moving his way. The Global Pandemic Initiative, formed in May, is a collabo