U201-A Main board

U201-A Main board

Features :

Dual stable voltage input

Running normally on the condition of -40~~+55degree

Board-fixed EMC component

Input & output signal differentiate from system voltage individually

CPU changed only for different models

Weight:190g

100% Factory Tested.

Con Conection Con Conection Con Conection

P1 micro-swith 1 P6 power board P12 ----------

P2 micro-swith 2 P7 sensor 1 P13 display 1/A

P51 keypad 2 P8 sensor 2 P14 display 1/B

P3 keypad 1 P9 computer

P4 power board and SSR P11 display 2

of four-piston measurement transducer The upper subassembly includes inlet and outlet of oil. The export axis stretches out of measurement transducer from the hole of upper cover unit. The middle of frame unit is a solid chamber, connecting with four cylinders mounted stainless steel bushing. There is an oblong passage on top of each cylinder, which is communicated with lower part of cylinder. These oblong passages also communicate with annular grooves related on top of frame. Four pistons mounted idler wheels are installed respectively into bushings related, connecting piston with connecting rod at same axes. Camshaft unit insert into th fuel dispenser e oblong groove in middle of connecting rod. Shaft is supported by installing hole at lower frame and valve seat. D and U bearing are mounted in the two holes. Four end covers are installed at each end of frame, of which adjusting device being installed at one end cover to regulate the moving distance of piston concerned. Adjusting device regulates the discharge of measurement transducer so as to ensure the accuracy. Distributing valve and valve seat are installed at top of frame unit. 1-Seal gasket 2-Upper cover unit/O-ring 3-Drive fork/output shaft 4-Spring\O-ring\valve cover\seal\gasket 5-Frame\distributing valve\valve seat\connecting rod\cam\cam axis 6-Piston\clamp sheet\pin 7-End cover\adjusting bolt\gasket\regulating wheel Diagram 2-21: Exploded view of four-piston measurement transducer Wo fuel dispenser rking principle The pressured oil coming from vapor separator or submersible pump flows into distributing valve via measurement transducer and continuously flow into relevant cylinder via the oblong passage at top of frame so as to drive piston moving. Likewise, the piston impels opposite piston through connecting rod, pressured oil flows out the outlet of upper cover via the passages at top of cylinder and then the inboard window of distributing valve. As piston move to and fro, camshaft is driven by trolley unit that making distributing valve and export axis rotation. W fuel dispenser

in the scope of the common measure- achievable. In 2003 this was profited from to　　ment uncertainty the frequencies stabilized in investigate on the optical frequency stand-　　this way did not show any significant fre- ard with ultracold calcium atoms the influ-　　quency deviation with a relative uncertainty ence of frequency-shifting atomic collisions.　　of less than 10 15. As this uncertainty is as In these investigations a frequency shift was　　small as the realization uncertainty for to- not found either but an upper limit for this　　days best caesium atomic clocks this result inf fuel dispenser luence smaller by one order of magnitude　　can be regarded as the milestone at which was obtained. The investigations showed that　　optical atomic clocks begin to surpass the best a possible shift due to collision is smaller by　　microwave clocks in terms of reproducibility at least four orders of magnitude than in the　　and short-time stability. After the problem of case of the primary caesium atomic fountain　　optical frequency measurement too has in the clocks where it limits the accuracy achievable.　　past few years been solved applying optical　　 Within the scope of a novel concept neutral　　frequency combs and optical frequencies can　　 ultracold atoms will be stored in a l fuel dispenser attice of　　be divided down into second pulses with　　 light against the influence of gravitational　　justifiable effort nothing opposes the estab-　　 force over a prolonged period of time. If the　　lishment of an optical atomic clock. However　　 wavelength of the laser radiation generating　　the Cs atomic clocks with laser cooling can　　 fuel dispenser

& Co, a brokerage firm, has $2,000 as a long-term target, on the assumption that Google eventually wins a 1% share of the global digital-services business. Having survived the 2000 internet bubble—almost alone among Wall Street internet analysts� Mary Meeker of Morgan Stanley is keen to be seen as prudent in her bullishness. Yet like most of her peers, she thinks the shares are worth more than $400. Discounting expected cash flow for the coming ten years, she calculates a fair price of $413. Using other valuation techniques, she gets as high as $597. But these valuations all rely on Google delivering the now expected future perform fuel dispenser ance—which, as is clear from its current high ratio of share price to profits of 68 (compared with an average of 18 for the S&P 500), means spectacular growth. Whether it will achieve this growth, or even come close, is frankly anyone s guess, especially given how rapidly its market is evolving—a risk factor that surely argues for a far larger discount rate to be applied to future cash flow than the 11.5% in the Meeker model. On the other hand, as Ms Meeker points out, Google has so far consistently beaten her forecasts, both for revenues and for profit margins. Strikingly, just after Google went public, she predicted that it would generate revenues of $7 per user in 2005, up from $2 in 2002. In fact, it generated $10 per user—a number that, she plausibly argues, can be greatly improved on as ever m fuel dispenser ore advertising dollars shift to new media from old (which still account for 95% of total advertising spending). One reason that Google has been able to exceed earnings expectations in recent years is that the full-frontal attack some analysts predicted from Microsoft has yet to materialise. Ms Meeker had forecast a competitive search product from Microsoft by Christmas 2004, supported by a $100m advertising campaign. The passage of time has allowed Google to deepen its relations with its customers, making it more able to fight off competitors. Yet, omino fuel dispenser