U214-A TV

U214-A TV

me meter is a meter measuring liquid volume accumulatively, which consists of measurement transducer, calculator and indicator devices. When measuring liquid flow past the measured transducer, its mechanical measuring components divide flowing liquid into volume unit, then flow out together. At the same time it transforms the volume unit into relative position change value, indicating the total flowing volume by calculator and indicator devices. Measurement transducer once is called meter, which is the key parts in flow meter. 3. Additional devices Additional devices are apparatus aiming at ensure the accuracy of fuel dispenser, such as pump, oil-air separator, nozzle, solenoid valve, filter, oil indicator, pipeline, etc. 4. Ancillary devices Ancillary devices are adapted to realize other special functions of fuel dispenser, such as payment indicator, pre-setting, oil-air recovery, taxation interface, IC card read, amount indicator, zero-clear, etc. Article II Fuel dispenser’s development history Fuel dispenser is created and developed along with the development of automotive industry, petrol industr fuel dispenser y, and transportation industry. Diagram 1-1: Earlier fuel dispenser The first fuel dispenser in world, manufactured in the early of 20 century, is made of manual suction pump, transparent cylinder with scales, and switch (see the 1-1 diagram). The certain volume fuels flow into the vehicle’s tank by means of gravity, controlled by switch. The paid volume is decided by the operator eye-measuring the scales. Manual pump is replaced by motor pump until in 1920s, and the transparent cylinder by flow meter with scales (see Diagram 1-2). In 1940s, indicative handle calculator developed as wheel calculator, function having changed from indicator volume only into measuring volume, money, and unit price adjustment as well (see Diagram 1-3). The development of fuel dispenser electronic technique in the 1970s promotes the evolution of indicator operation and control management of fuel dispenser. The end of 20th cent fuel dispenser

(a) Check if it is valid to write to this data element if not a Data_Ack of 02 is　　 returned. The reasons a write is invalid are:　　 - wrong state　　 - read only data element　　 (b) Checking now moves to Data_Lg if the length of the data element (Data_El) is too　　 big or too small a Data_Ack of 01 is returned. For example the data element may be 3　　 bytes instead of the correct length of 2.　　 (c) Now Data_El is checked if the value of the data element is too big or too small a　　 Data_Ack of 01 is returned. For example the valid range for the data element is 1 to 8　　 but the value of Data_El is 9.　　 3. If the Data_Id is a valid Command the order of checking is as follows:　　 (a) make sure this Command can be executed in the current device State. If not the　　 Command is refused with a Data_Ack 03.　　 (b) Checking now moves to Data_Lg (remember checking is from the left) check　　 Data_Lg is 00. If it is the Command format is correct. At this poi fuel dispenser nt the application has　　 recognised the Write as a valid Command but it may not have been implemented in　　 this device in which case a Data_Ack of 05 is returned.　　 If Data_Lg is not 00 then a Data_Ack of 05 is returned. A possible explanation for　　 this may be the Originator message is trying to write data to a Command.　　 (c) Finally the State is valid and Command is valid but the application refuses the　　 Command in this case a Data_Ack of 06 is returned. A number of examples of this　　 situation can be found in the dispenser standard. One such example is:　　 If a Release Command is sent to a Fuelling Point that does not have the product unit　　 fuel dispenser price set the Release Command will be rejected with a Data_Ack of 06.　　FP2_1.89 fuel dispenser

fall short. The outcome will be “more like reform than revolution,�predicts Walter Guevara, a political consultant. Venezuela 1, Brazil 0 The nationalisation—and especially the circumstances in which it was done—reverberated around South America. It looked like a victory for the regional plans of Mr Chávez, and a defeat for those of Brazil s president, Luiz Inácio Lula da Silva. In Havana, Mr Morales signed an agreement under which Bolivia joins Cuba and Venezuela as the third member of the Bolivarian Alternative for the Americas (known by the acronym ALBA, which means “dawn�in Spanish). This alliance is supposed to be an alternative to a Free Trade Area of the Americas favoured by the United States. “Only in Cuba and Venezuela do we find unconditional support,�gushed Mr Morales. Under trade preferences which expire in December, Bolivia exports some $160m a year to the United States. Those exports support 100,000 jobs, many in textile firms and two-thirds of them in El Alto, a restive satellite city overlooking La Paz. Bolivia has not asked for the preferences to be extended and the United S fuel dispenser tates has not offered to do so. The alternative Mr Morales has chosen involves barter trade by governments. Mr Chávez has offered to buy all of Bolivia s soya crop (its second-biggest export) in return for all the diesel the country imports. Mr Chávez constantly trumpets his support for regional integration. What he means by that is an anti-American political alliance, under his leadership and based primarily on the control and distribution of energy. Last month, he said that Venezuela would pull out of the five-country Andean Community because two of its members, Colombia and Peru, have signed free-trade agreements with the United States. Bolivia, which is also a member, may now also leave. Mr Chávez s strategy clashes with Brazil s. It yearns fuel dispenser to be the leader of a South America united by trade and co-operation between the Andean Community and Mercosur, the four-cou fuel dispenser