U401-B Solenoid Valve

U401-B Solenoid Valve

Materials:

Body: Brass

Approval: EX mâ…¡A T4

Technical Specifications:

Power:AC220 V,2×4W

Diamter:1"

Current :big flow valve 18mA

small flow valve 18mA

Allowed flow rate:90L/min , Max flow rate: 90L/min , Mini flow rate:5L/min.

Working pressure:0.035-0.035MPa

Environmental Condition: -40~~+70degree

Package:

Product ID Weight Dimension

U401-B 2.1kg/case of 130 ×116× 80mm/case of 1

ion without authorization; illegal disassemble or modify IC card so as to change data. Apart from the above methods there are some professional attacks mainly for operating system. IC card intellectual Prevention technology mainly contains two aspects: one is for IC card itself including physical safety; the other is for information exchange process. In order to ensure the physical safety of IC card, some safety technologies are adopted in manufacture of card base, such a fuel dispenser s laser engraving, fluorescent printing and macroline technology. As for possible attacks, chip manufacturers have researched many method fuel dispenser s: Inspection of exterior voltage; Inspection of low frequency of clock; Preventing information of data bus being pick through supervision programme; Protecting memory by logical encryption; Fuse protection; Mounting encrypted calculating processor for chip. The above safety technologies are belongs to hardware aspect. Whichever technology provided for hardware platform, the prevention technologies of differential power analysis (DPA) and simple power analysis (SPA) should be considered in software. COS safety mechanism The purpose of COS safety protection aims at protection information on card and exchanged between terminal and card. Therefore, safety mechanism should be able to effectively control information, which is considered in two aspects: One is to control the right to operate information, that is, who is authorized to operate information; the other is to process information itself, that is, encryption processing by which unauthorized person is unknown to its contents, even though he or she has got information. Other methods include: adopting enhanced Data Encryption Standard (DES) calculation in operating system; memory adopts special encryption; employing specific I/O technique to prevent Differential Power Analysis (DPA) attack. The control of right to operation of COS basically is divided into two categories: authentication mechanism and safety report mechanism. In real appli fuel dispenser

€€ Page: 21　　 3 bin8 R( ) M　　 CDP_Error_Total　　 Total of error having that code. If more than 255 errors are counted the value　　 (03H) fuel dispenser W(2)　　 remains 255. When a value is written in this field the total is cleared an fuel dispenser d the　　 date is recorded.　　 4 DATE R( ) M　　 CDP_Error_Total_Erase_Date　　 Date of last total erase.　　 (04H) W(2)　　 5 bin8 R( ) M　　 CDP_Error_State　　 Specifies the CDP state during which the latest error (with the selected　　 (05H)　　 ERROR_ID) occurred. The CDP state numbering is described in chapter 2.　　UNSOLICITED DATA　　 100 bin8 M　　 CDP_Error_Type_Message　　 This message must be sent unsolicited from the CDP (without acknowledge)　　 (64H) + bin8　　 whenever an error occurs.　　 The field structure consists of:　　 bin8 CDP_Error_Type　　 bin8 CDP_Error_State　　 The error codes listed below are used by the transaction database (if it is pre fuel dispenser

gues in other British cities. He has control of London s transport network, as well as limited powers over planning and the police. He can even levy a small tax on his citizens. Mr Livingstone has made the most of his powers, especially in transport. His congestion-charging scheme has reduced traffic snarl-ups, and he has revitalised the bus network. Beginning in 2007, he will gain control over some of the commuter rail lines that serve the city. Many Londoners see fuel dispenser extending his powers as the key to further improvements. London First supports his bid for personal control over skills training, which fuel dispenser is currently the preserve of regional agencies. Mr Livingstone has also suggested granting himself more powers over planning, to prevent his decisions being scuppered by unco- operative local authorities. A governmental review of his purview is due to report soon. Yet despite this talk of more independence, London s fate still depends on central government, which holds the purse strings. Tony Travers, of the London School of Economics, points out that Mr Livingstone s own piggy-bank is now empty. London First claims that even if the mayor did get extra revenue-raising powers, new taxes would merely drive firms overseas. “If we want more cash for economic development,�says Mr Travers, “it will be a case of battering against the Treasury s door until they hand over the money.�There is an argument for letting London keep more of its own wealth to spend within its city limits. But convincing the rest of the country could be tricky. © 2006 . London s East End The simmering pot Feb 16th 2006 From The Economist print edition A new book reveals the depth of resentment towards newcomers in the East End IN THE 1950s, Michael Young and Peter Willmott found something close to paradise in Bethnal Green. The east London neighbourhood might have been shattered by bombs, and its houses were shockingly crowded, but the white working-class folk who fuel dispenser