U501-A Pulse sensor

U501-A 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 Bennett SB-100 meter and other meters whose pulse per circle is 60.

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: 60 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+ 70 degree

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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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.

Package:

Cross Weight Dimension

340g/case of 1 186x157x29mm/case of 1

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 ilable 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.

used to keep a certain position to refuel. Working principal Pressured oil flow into the chambers in where main and vice valve located after switching main valve and flow out of spout fuel dispenser because vice valve is opened. Liquid flowage reduces the static pressure and the pressure in upper chamber of switch. The pressure on the chambers of upper and low switch membrane are equivalent due to the front of spout communicating atmosphere. When inlet vent is flooded by oil, the lower chamber of switch membrane still keeps atmospheric pressure. Thus, pressure difference is generated between the upper and lower chambers of switch membrane, the membrane and auto-shut level moving upward, auto controlled level moves downward under the function of switch handle. Finally, steel ball is driven into the hole of auto controlled level; switch handle continues to move downward; main valve is closed. In order to form the auto-shut function, two oil passages with different sections should be set (See Diagram 2-32). Here the Bernoulli equation as followed in order to explain the principle of auto-shut: �? = 12 ρv12+ρgh1=�?+12ρv22+ρgh2 (2--6) Among the above formula: ρ── oil density �?── pressure in main valve passage v1 ── v fuel dispenser elocity of flow in main valve passage h1── height of main valve �?── pressure in vice valve v2── velocity of flow in vice valve passage h2── height of vice valve Diagram 2-32: Auto-shut fuel dispenser nozzle Due to small nozzle body, it could be regarded as a horizontal pipe, that is h1= h2 From Formula 2-6: �?－ｐ2�?2ρ(v22－v12) (2-7) According the following Formula: v1v2=A2 A1 In the Formula: A1 ── section of main valve passage A2 ── section of vice valve passage The Formula can be converted into: �?－ｐ2�?2ρv22 [1�?A2A1)] It is known from Formula 2-8 that if A2 / A1 is certain value, P2 becomes a negative value when velocity of flow increasing a certain extent, that is, P2 smaller than at

tments (from top left to bottom right).　　 bined measurement uncertainties. The Cu-Ge　　 Planar multi-junction thermal converter o fuel dispenser n a　　 alloys which were used for the first time for　　 quartz crystal chip for high-frequency applica-　　 tions (Department 2.1) conductivity measurements and whose con-　　 Asymmetric coupled test structures for planar ductivity can be varied in a wide range by　　 lines in CMOS technology (Department 2.2) varying their alloy shares have excellently　　 Detection of sinusoidal signals by a digital　　 passed the tests and will in future be used as　　 sampling method (Department 2.3)　　 reference materials. The investigations per-　　 Series connection in SINIS technolgoy for　　 formed have aroused the interest of the air-　　 programmable Josephson voltage standards　　 craft industry and of manufacturers of coins　　 (Department fuel dispenser 2.4)　　 and coin testers who largely depend on con-　　 Single electron transport through an electronic　　 fuel dispenser ductivity measurements. It is planned to　　 channel with the aid of acoustic surface waves　　 bundle future activities of all those involved　　 (Department 2.5)　　 Linking of electrical units using quantum effects in a European network.　　 in the metrological triangle (Department 2.6)　　 62　　 Figure 1: Calibration of　�

are hurtling towards a field in Pennsylvania. In the intervening 90 minutes the audience sees 40 ordinary people go through a living hell—and history turn on a hinge. United 93—a regu fuel dispenser lar passenger plane that was flying from Newark to San Francisco—was the odd man out of the four planes that were hijacked on September 11th. It was the only one that failed to hit its intended target (which was probably the Capitol). And it was the only one where the passengers fought back. “United 93”—the first big-screen dramatisation of September 11th—is thus more than a film about a hijacking. It is also a film about the first counter-strike in the war against radical Islam—an improvised revolt that saved the American government from decapitation and demonstrated the heroic resourcefulness of ordinary people in extraordinary circumstances. The film has stirred an angry debate. Isn t Hollywood hijacking the hijacking for its own money- grubbing purposes? Isn t life hard enough without watching people hurtle to their death in a metal tube? And—the most insistent question of all—isn t it too soon for America to relive the horror of September 11th? Trailers for the film were greeted with boos in New York and Los Angeles, and were subsequentl fuel dispenser y pulled. Fully 60% of people tell pollsters that they will not see the film. All this is understandable. Nobody wants to have their noses rubbed in horror for the sake of it. And for the most part Holly fuel dispenser wood is incapable of dealing with even the most heavyweight subjects—terrorism included—without indulging in a mixture of sensationalism and idiocy. But September 11th cannot remain off limits to popular culture. Bruce Springsteen (with “The Rising�? and Neil Young (with “Let s Roll�? a hymn to Todd Beamer, one of the heroes of United 93) have both addressed the subject. A&E, a cable channel, has already made a film about Flight 93. Several films about September 11th are in the works, including one by the more-miss-than-hit Oliver Stone.