U501-C Pulse sensor

U501-C Pulse sensor

This incremental shaft encoder has been designed for heavy-duty application,especially for use in petroleum & diesel dispensing environments where potentially explosive atmospheres can be expected. It features a rugged and compact construction as well as a wide selection of mechanical and electronic variations.

Materials:

Housing: Die cast aluminum alloy

Bearings: Self-lubricating sintered bronze

Features :

A high advantage in reliability and adaptability.

A large selection of shaft couplings, including couplings with built-in backlash clutch facility.

Standard sealing screws.

The fuel resistant cable can be customized regarding length.

Suit the TATSUNO meter and other meters whose pulse per circle is 60 or 100.

100% EX approved and tested.

Specifications:

Power supply: 5 VDC, fixed or variable

Current Consumption: Standard 10 to 30 mA, max 90mA

Number of Channels: 2

Number of pulses: 50 ppr

Output Signal: Square wave duty cycle 50%+10%.

Phase Shift: 2 channels 90° (25% +5%)

Output Stage: NPN

Output Current: Max. 30mA

Hysteresis: Min. 0.2°

Output freq. Min. 1000Hz

Temperature range: Working -40 to 70degree

RPM: Max 3000RPM

Mounting: With 3 pcs. M4 screws

Weight: Approx. 340 gram. Excl. the cable

Wiring:

Color Channel plug

Green +5V 2

Black CH1 3

Yellow 0V 4

Blue CH2 5

Red +5V 6

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Package:

Cross Weight Dimension

150g/case of 1 130x100x15mm/case of 1

Approval:

The shaft encoder has been tested and granted Ex and EMC approval.The Ex-approval is EX d IIA T3.Ex certificate number is CE991209.

Ordering Specifications:

Product ID Product name

U501-C pulse sensor

Important:

The products should be used in compliance with applicable country, province and local Laws and regulations. Products selection should be based on physical Specifications and limitations and compatibility with the environmentand materials to be handled. HONGYANG makes no warranty of fitness for a particular use. All illustrations and Specifications in this literature are based on the latest products information lable at the time of publication,HONGYANG reserves the right to make changes at any time in price, materials. Specifications and models and to discontinue models without notice or obligation.

Exploded drawing of double flux solenoid valve From above diagrams, it is known that this kind of solenoid valve consists mainly of valve body, membrane, cone-shaped spring, valve cover, pilot valve, control valve of small flux, reposition valve, winding of pilot valve and small flux valve winding. The working principle of double flux solenoid valve can be leaned from Diagram 2-35. Pilot valve, small flux valve and main valve controlled by membrane are closed after power cut, no oil pass solenoid valve. When both two windings are open, pilot valve and small flux valve switch on, pressured oil pushing down membrane. Part of oil in A chamber flow toward outlet of solenoid valve via pilot valve and small flux valve, main valve is switched on after overcoming spring, at this state, solenoid valve is in large flux. When winding of pilot valve is cut power, pilot valve is closed, membrane go upward so as to close main valve due to oil pressure increase in A chamber. Solenoid valve is in small flux state. If the power of winding of small flux valve is cut off, small flux valve is closed, no flux in solenoid valve. It is learned from above introduction t fuel dispenser hat the lar fuel dispenser ge and small flux of solenoid valve are controlled by pilot valve and small flux valve. This is why it called double flux solenoid valve. As filing motor, pilot valve, small flux valve and main valve are switched on, fuel dispenser work in large flux state. When filling volume nearly reach presetting value, winding power of pilot valve is cut off, main valve is closed. However, small flux valve is still working. When filling volume reach preset-value, the winding power of small flux valve is cut off, solenoid valve is closed. Filling operation is end. Troubleshooting In filing operation some troubles maybe correlate to solenoid valve, some maybe to fuel dispenser other hydraulic components. Small flux or no delivery in fuel dispenser, for example, it is possible caused by solenoid valve or other components. Therefore, it is need to give concrete analysis and diagno

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n, the prime minister, call themselves Sarkozystes. But the sniping on the left has got worse. Rivals of Ségolène Royal, the only candidate who polls say might beat Mr Sarkozy, have begun a last-ditch campaign to stop her. “Technique does not replace politics,�huffed Lionel Jospin, a former prime minister who was the losing candidate in 2002 and wants to run again. “Good measurements�do not make a good president, puffed Martine Aubry, a former minister, in a sideswipe at snapshots of Ms Royal sporting a bikini this summer. Once the Socialists pick their candidate in November, the swagger of unity on the right and the bickering on the left should make way for the real rivalry in next spring s election between the two parties. And it looks as if the standard-bearers will indeed be Mr Sarkozy and Ms Royal. For months the polls have suggested that the campaign will become a contest between them. Attention is now turning from the candidates to their strategies—which in some respects seem confusingly similar. Both Mr Sarkozy and Ms Royal promise to break with the past (Mr Sarkozy s favourite word is rupture). Being different and unbound b fuel dispenser y party tra fuel dispenser ditions has been their common recipe for success at a time when the French are disillusioned with the political class. Both have broken party taboos she by attacking the 35-hour week, he by calling for positive discrimination. Both have also talked more of values than of actual reforms. The work ethic, classroom discipline and family values have been recurring themes, not concrete proposals to tackle France s 8.9% unemployment. Mr Sarkozy, who vows to cut the jobless rate to 5%, once called himself a liberal and urged more flexible labour laws. But since the government withdrew its new flexible youth contract last spring, his language has chang fuel dispenser ed to what he calls “popular liberalism� Last week, when the government announced a big rise in the minimum wage and more subsidies for low earners, Mr Sarkozy cheered. Ms Royal is as ha