U103-C Filter

U103-C Filter

Materials:

Body: Aluminum(spray-painted)

Technical Specifications:

Working pressure:0.2Mpa

Filter accuracy:30um

Maximum flow rate:220L/min

Medium:gasoline,diesel

Features :

?92*82

M20*1.5

Package:

Product ID Net Weight Cross Weight Dimension

U103-C 18kg/case of35 19kg/case of35 50×28×35cm/case of35

ariable DC voltage. Diagram 3-9 is a drive circuit. The display mode of volume and sales on main display board adopt 6 digits liquid crystal display (Model ED-139, fuel dispenser see Diagram 3-11), PPU or unit price r digits LCD (Model ED-830, see Diagram 3-12). Diagram 3-9: Static circuit and wave of LCD tube Diagram 3-10: Drive circuit of one-digit tube Diagram 3-11: ED-139 6-digit LCD Diagram 3-12: ED-830 4-digit LCD Display drive chip often adopts 8-digit memory/flip-latch: 74HC95. The drive circuit of liquid crystal display is composed of double D trigger 74HC74 and double input exclusive-OR gate 74HC86. Some fuel dispensers adopt special crystal drive circuit in liquid crystal display, its principle basically similar to 74 series LCD drive circuit. A few fuel dispenser manufacturers adopt light-emitting diode (LED) as display components of display board because its cost is low and need not backlight in evening. The defect of this display component is bad display effect, especially under extensive sunlight, and much electricity consumption. LED display drive circuit also has parallel and serial drive, similar to LCD display drive circuit in terms of structure. Very few fuel dispensers adopt matrix or color liquid crystal display, showing much information. However, it largely increases cost. 2.4 Power supply Stable voltage power supply used in explosion-proof fuel dispenser Most of fuel dispensers adopt explosion-proof type, installing liner stable voltage power supply or switch voltage power supply. Switch voltage stabilizing power supply includes power transformer, DC/DC converter, 220V direct commute and pulse transformer, illustrated in Diagram 3-14 and 3-15. Due to cost-efficient and simple design, liner stable voltage power is widely adopted. However, it is affected by exterior network voltage. Although pulse transformer is able to tackle with network voltage fluctuation, it is can’t afford because of complicated technology, expensive cost and difficult to maintenance. In recent years, D fuel dispenser fuel dispenser

- - - - - - -　　 Unable 1 fuel dispenser - 1 State error 6 State error 6 State error 6 State error 6 State error 6 State error 6 State error 6　　 Open_FP - 3 3　　 State error 1 State error 3 State error 3 State error 3 State error 3 State error 3 State error 3　　 Close_FP 2 - 2 - 2 - 2 - 2 - 2 - 2 - 2　　 State error 1　　 Valid-nozzle-up 1 2 - 4 - - 6 - - - -　　 Invalid-nozzle-up 1 2 - 4 - 5 - - - -　　　　 Nozzle-down 1 2 3 - 3 5 - 3 - 3 - 3　　 - 53　　 Release_FP - 5 - 6 5　　 State error 1 State error 2 State error 5 State error 5 State error 5 State error 5　　 Auth-time-out - - - - - 3 - fuel dispenser fuel dispenser

Even more disappointing for the students who attend a Hauptschule, Germany s famed “dual model�for apprentices (who spend half their time on the shop-floor and t fuel dispenser he other half in a vocational school) is no longer the social elevator it once was. Many would-be apprentices are crowded out by graduates of grander schools. And the maths demanded in some apprenticeships can be far too hard for somebody with only basic schooling. Besides, many German firms simply no longer take in apprentices. All this explains why more than half of vocational-school students no longer do a classic apprenticeship but enrol in some other professional programme. At stake are not just equal opportunities, but the future prospects of the German economy. “The German education system is wasting valuable potential,�says Andreas Schleicher, a co-ordinator of PISA research at the OECD. He has become something of a persona non grata among Germany s education establishment, perhaps because he dares to criticise his own country. Mr Schleicher thinks that in its education policy Germany needs to become more like Finland, which twice topped the PISA charts for literacy. For instance, it could start teaching children in nursery school rather than simply letting them play, stop selecting students for different types of schools so young, and create a culture of individual support. In the long run, Germany may have no choice but to do away with its three-tier school system. Such attempts have failed before, but two new forces are now at work. One is demography as the number of pupils drops rapidly, having just one, comprehensive, kind of school may be more efficient than maintaining three. The other force is business, which cannot thrive without well-educated employees. It was a lobbying organisation for Bavarian business, the Vereinigung der Bayerischen Wirtschaft, that in 2003 published the most comprehensive study so far on how to reform Germany s education system. According to the PISA study, Bavaria has the be fuel dispenser fuel dispenser