U613-B Explosion-proof Terminal Boxes

U613-B Explosion-proof Terminal Boxes

The boxes are suitable to be used in outdoor and indoor places of zones 1 and 2 where there is explosive mixture

Features:

Enclosure is made of casting aluminium alloy,

Surface is sprayed with plastics.

Connection with tube or through wiring.

Explosion-proof approva:l

The flow control valve has been tested and granted Ex approval.

The Ex-approval is EX m II T4.Ex certificate number is CE021037.

Package:

Product ID Net Weight Cross Weight Size

U614-A 33kg/case of 20

38kg/case of 20 5.2×25.5×18cm3/case of 20

cation, the two categories of mechanism are adopted according to varied needs. COS security system COS safety system mainly consists of three sections: Safety state: current safety classification of card, which is used for judging holder whether or not has right to operate. Before power of IC card being connected, COS just has the minimum right to operation. Only pass authentication, like password verification and interactive authentication, can access to higher rights. Safety state is stored and indicated in special memory. Security attribute: every file has a corresponding requirement whether or not conduct an operation. Only security state meets file’s needs, operation concerned can be conducted. Therefore, security attribute is also called operation purview. When prepare to conduct an item of operation, system would automatically inspect current security classification whether or not meet requirement of purview. Security mechanism: based upon above security structure, it is needed to establish a security mechanism to interchange safety state, so that connecting safety state and security attribute. In other words, make valid user holding relevant operating right, and hinder illegal user. Generally, the transformat fuel dispenser ion of safety state includes password verification, authentication, encryption /decryption.etc. PIN authorization Verifying PIN, like using bank card, terminal transmit password into IC card, in which being compared with the password stored in secret area. Card holder gets operation right if passwords are matched. If fail to match there are only three times to try. After three times card holder is supposed as illegal user, verifying PIN is closed. PIN authentication technology has a long history, which is only testify card fuel dispenser holder whether or not know password, unable to testify he or she whether legitimate holder. Because of the shortcoming, a series of new authenticating technology have researched that employs human creation trait to distinguish personal identification. At prese fuel dispenser

metallic tanks and equipment for storage tanks and for service stations the secretariat of which is held by DIN.　　 This European Standard shall be given the status of a national standard either by publication of an identical text or　　 by endorsement at the latest by November 2004 and conflicting national standards shall be withdrawn at the latest　　 by November 2004.　　 This document has been prepared under a mandate given to CEN by the European Commission and the European　　 Free Trade Association and supports essential requirements of EU Directive(s).　　 For relationship with EU Directive(s) see informative annexes ZA and ZB which are integral parts of this　　 -- - - ---　　 document.　　 This European Standard Petrol filling stations consists of 4 parts:　　 Part 1: Safety requirements for construction and performance of metering pumps dispensers and remote　　 pumping units　　 Part 21): Safety requirements for construction and performance of fuel dispenser safe breaks for use on metering pumps and　　 dispensers　　 Part 31): Safety requirements for construction and performance of shear valves　　 Part 41): Safety requirements for construction and performance of swivels for use on metering pumps and　　 dispensers　　 Annex A is normative. Annex B is informative.　　 According to the CENCENELEC Internal Regulations the national standards organizations of the following　　 countries are bound to implement this Europ fuel dispenser ean Standard: Austria Belgium Cyprus Czech Republic Denmark　　 Estonia Finland France Germany Greece Hungary Iceland Ireland Italy Latvia Lithuania Luxembourg Malta　　 Netherlands N fuel dispenser

tried to buy AOL from its parent, Time Warner, Google s Mr Schmidt flew in for talks that led to Google taking a defensive stake in AOL, thus keeping it out of Microsoft s and Yahoo! s reach. In response, Microsoft has contemplated buying all or part of Yahoo!, and has recently announced a vague but large increase in research spending which amounts to an arms race. Google is now alleging that Microsoft is unfairly steering users of its web browser to MSN for searches, and is preparing to dispatch lawyers to keep Microsoft in check. Google thus finds itself at a defining moment. There are plenty of people within the company who want it to play the power game. “The folks who are closest to Larry and Sergey are very, very worried about Microsoft, as well they should be,�says John Battelle, the author of a blog and a book on Google. Yet the company s founders themselves may not be prepared to drop their idealism and their faith in their own mathematical genius. They have always wanted to succeed by being good and doing good. “Never once did we consider buying a big company,�says David Krane, Google s 84th employee, by way of example. It would not be googley. It would, he says, be “yuck� fuel dispenser © 2006 . Web 2.0 The enzyme that won May 11th 2006 | SAN FRANCISCO From The Economist print edition If it s cool, it s probably Web 2.0 IN 2003, towards the end of the dotcom depression, Dale Dougherty and Tim O Reilly, the founders of O Reilly Media, a book publisher and conference firm, were brainstorming, and Mr Dougherty dropped the term “Web 2.0� It was an allusion to the nomenclature for software upgrades, and Mr Dougherty was applying it to what he hoped would be a second generation of the internet. fuel dispenser “We think of ourselves as an enzyme,�says Mr O Reilly. “When we see something coalescing, we give it a name.� In marketing terms, it has been a great success. In 2004 Mr O Reilly and a partner, John Battelle, started a new annual fuel dispenser