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

ressure cover Take out spring and main valve Unload top level and locking nut, pay much attention as replacing 0-ring Adjusting bolt, keeping the clearance between to fuel dispenser p level and switch handle in the scope of 0.3~~0.5mm Install spring, pressure cover and sealed gasket. Trail run, to ensure operation flexible of nozzle and each sealed face without leakage Auto-shut nozzle Auto-shut nozzle is developed from general nozzle, which has function of automatic switch off. As container is full, nozzle valve is closed automatically, keeping clean and safety of operation environment. Due to this merit, this kind of nozzle is widely adopted in many brands of fuel dispensers. fuel dispenser This handbook will introduce the structure and working principle of general nozzle. Structure Illustrated in Diagram 2-31, auto-shut nozzle consists of nozzle body, main valve, top level, switch membrane, auto-shut level, side valve core, spout, etc. 1-Nozzle body 2-Cap 3-Ejection pin 4-O-ring 5-Spring 6-Pressure plate 7-Main valve 8-Upper cover 9-Swtich membrane 10-autoshut bar 11-Steel ball 12-Assistant valve 13-Sleeve 14-Air inlet spout 15-Air inlet pipe 16-Spring 17-Spout 18-O-ring 19-Spring 20-Assistant valve core 21-Autocontrol bar 22-Supporting plate 23-Location-limited plate 24-Switch handle Diagram 2-31: Auto-shut nozzle Main structure of auto-shut nozzle as followed: Four holes in the circle of side valve, which are connected with the upper chamber of switch membrane via the gradient hole on nozzle body; the lower chamber of switch membrane connect to outside via the clearance between nozzle body and auto-shut level. There are three steel balls installed in holes of upper of auto-shut, lift switch handle, auto-shut level is stuck in by there balls; once auto-shut level move upward, main valve will be closed as switch lost supportive p fuel dispenser oint. Metal sheet is installed on switch handle, which is controlled three different positions corresponding to three kinds of openness--- three kinds of flow rate. The spring on spout is

in the scope of the common measure- achievable. In 2003 this was profited from to　　ment uncertainty the frequencies stabilized in investigate on the opt fuel dispenser ical 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 influence smaller by one order of magn fuel dispenser itude　　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 lattice 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　　 fuel dispenser wavelength of the laser radiation generating　　the Cs atomic clocks with laser cooling can　　

rends, Issues and Macro Implications for the EU� by Cécile Denis, Kieran McMorrow and Werner Röger, European Commission Directorate-General for Economic and Financial Aff fuel dispenser airs, Economic Paper No. 254, July 2006. © 2006 .  About sponsorship Offer to readers Sep 14th 2006 From The Economist print edition Buy a PDF of this complete survey, including all graphics, for saving or one-click printing. Reprints Reprints are available should you wish to order extra copies of the survey. Please send your request to the relevant region Worldwide (excluding North America) Rights fuel dispenser and Syndication Department 26 Red Lion Square London WC1R 4HQ United Kingdom Tel +44 (0)20 7576 8000 Fax +44 (0)20 7576 8492 E-mail rights@economist.com North America Rights and Syndication Department 111 West 57th Street New York NY 10019 USA Tel +1 212 541 0532 Fax +1 212 641 9808 E-mail usrights@economist.com Corporate offers and customised reprints For corporate reprint orders of 500 or more and customisation options, please contact the Rights and Syndication Department in the relevant region Worldwide (excluding North America) Rights and Syndication Department 26 Red Lion Square London WC1R 4HQ United Kingdom Tel +44 (0)20 7576 8000 Fax +44 (0)20 7576 8492 E-mail rights@economist.com North America Rights and Syndication Department 111 West 57th Street New York NY 10019 USA Tel +1 212 541 0532 Fax +1 212 641 9808 E-mail usrights@economist.com © 2006 .  About sponsorship Social networking Hanging with the in-crowd Sep 14th 2006 From The Economist print edition Big media firms and investor fuel dispenser s are cosying up to social-networking websites WEBSITES for social networking have never had so many friends. The best known, MySpace, recently became the most visited website