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U613-A Explosion-proof Terminal Boxes

U613-A

U613-A 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

U613-A 32kg/case of 200

37kg/case of 200 22.5x22.5x33.5 cm /case of 200

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    wing measuring requirements: Instrument of measurement should have a certain tension and not easily be deformed so as to affect the inner cubage volume. Foam and vapor that dissolved in fuel measured are able to be discharged completely when pouring into instrument of measurement. Liquid measured should be discharged after measurement, only a bit being left in container. Valve of instrument of measurement should have reliable sealability without leakage phenomenon as being full of oil. Indicating pipe on measurer should be made of glass without defect on inner diameter so as to hinder observation. Connection between measuring neck and scale should be fixed in order to keep stably relative position. The line on indicating glass should be legible and clear, width being no more than 0.25mm. The inner of measuring neck is depended upon measurer’s accuracy. As for Class II metal standard measurer, the ratio of corresponding liquid volume of per millimeter to measurable volume of measurer is no more than 5×10?. Discharge time of measurer relies on the diameter of bottom valve. It is leaned from experiment that the longer time of unload the less residual liquid left, better promoting measurement accuracy, and vice versa. Thereby, in order to fuel dispenser control fuel dispenser the fuel dispenser tolerance occurred by discharge velocity and time and residual volume during approval progress, discharge condition and pouring-out time is regulated generally that opening fully bottom valve start to count two minutes from liquid dropping, then close bottom valve; or fully open bottom valve and close it after 3 minutes. Indicated value generally read out as showed at the bottom of curve in indicating glass. Apart from standard measurer applied in fuel dispenser inspection and approval, there is thermometer or temperature sensor, measured range ?0?to ?0? minimum value 0.2? which used to measure temperatures of liquid that passed over nozzle vent and in standard measurer. One of purpose to measure temperature is to make modification of

technical specification

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    Nasr Oxford University Press; 214 pages; $29.95 and £17.99 Buy it at Amazon.com Amazon.co.uk AFP IF EVER policymakers in Washington, DC, needed a slim, thoughtful account of Iran s experiments with pluralism and democracy, now surely is the time. Ali Gheissari, a historian at the University of San Diego, and Vali Nasr, who teaches political science at the Naval Postgraduate School in Monterey, California, set out to challenge the assumption that modern Iranian history is essentially about the conflict between Iranian regimes and their cit fuel dispenser izens. fuel dispenser In d fuel dispenser oing so, they implicitly challenge the neoconservative belief that this conflict is approaching a climax. Too pat, say the authors Iranians failure to resolve a different tension, involving national ambition and risk, explains why their country s century-long transition to democracy shows no sign of being brought to a conclusion. The authors argue that ever since 1906, when a coalition of clerical grandees, progressive intellectuals and bazaar traders forced the shah of the time to promulgate Iran s first constitution and establish a parliament, Iranians have been struggling to accommodate the competing attractions of liberty and the rule of law, on one hand, and stability —often imposed with an iron fist—on the other. From the 1940s until re