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.

C/DC convert type switch power is universally adopted in fuel dispenser. Diagram 3-13: Structural sketch map of liner voltage stabilizing power Diagram 3-14: Structural sketch map of switch stable voltage power adopted DC/DC converter Diagram 3-15: Structural sketch map of switch voltage stabilizing power adopted pulse transformer As an electronic component in fuel dispenser, stable voltage power is easily failed and possibly leads to whole trouble of fuel dispenser once appear doesn’t work. Generally, liner voltage stabilizing power adopts 78 series special voltage stabilizing integrated circuit, such as 7805 and 7812, simple design and convenient maintenance. In Diagram 3-16, a popula fuel dispenser r liner voltage stabilizing power circuit of fuel dispenser is illustrated. Switch power supply adopted pulse transformer will not introduced here, reference with relevant boos when necessary. Diagram 3-16: Circuit diagram of liner voltage stabilizing power These integrated circuits of LM2576, LM4962 AND MC34063A are widely adopted in DC/DC transformer power supply. Intrinsic safety voltage stabilizing power supply in fuel dispenser This kind of direct current is able to employ fuel dispenser in flammable and combustible environment only when mounted safety barrier. It also called intrinsic safety voltage stabilizing power supply illustrated in Diagram 3-18. Explosion-proof power supply is only used in explosion-proof box or an atmosphere without explosive gas, including its associated circuit. It is allowed to employ intrinsic safety power in explosive atmosphere, but must in explosion-proof box or an environment without explosive gas. However, its associated circuit is permitted to use in explosive gas atmosphere if meet requirements concerned. The major difference between intrinsic safety power and explosion-proof power is whether install safety barrier. Diagram 3-17: Voltage stabilizing power circuit of DC/DC convertor Diagram 3-18: Sketch map of intrinsic safety power The function of setting a safety barrier i fuel dispenser

rements for data and via open communication systems. In a sub-　　 software security which are metrologically project headed by Department 8.3 in which　　 founded differ for the various tasks the IT- the participating universities several PTB　　 related aspects are basically similar. Handling laboratories verification authorities and the　　 of these aspects by Department 8.3 on a cross- Federal Office for Information Security (BSI)　　 sectional basis has led to first noticeable take part a security concept for the transmis-　　 synergetic effects. fuel dispenser sion of measurement data via open networks　　 has been developed. As a model this concept　　 has a significance which goes far beyond the　　 project. The basis of this concept is the secu-　　 rity module MIM (Meter Identifi fuel dispenser cation Mod-　　 ule see Figure 7) which has been further　　 developed by Department 8.3 so that first　　 applications have already been demonstrated.　　 Figure 5: MCG signal with motion artifact (a) ex-　　 The Software Testing Laboratory which　　 traction of the artifact by ICA (b) and artifact-cor-　　 belongs to the same department has proven　　 rected MCG signal (c)　　 by respective in-depth test fuel dispenser

the government wants to drive loggers out, while Greens grouse that it is not doing enough. Although the environment ministry is eager to control the frontier, other ministries seem unenthusiastic. A recent bailout of struggling farmers, for example, did not require that they obey the environmental law. On the rescue of the Amazon, the government is clearly still of two minds. © 2006 . Tropical rainforests Giving credit Apr 27th 2006 | SÃO PAULO From The Economist print edition Rewarding rainforest conservation to help global warming Get article background TROPICAL deforestation accounts for a fifth of greenhouse gases emitted by human activity fuel dispenser . Yet the Kyoto protocol, which seeks to control global warming, does nothing to discourage it. Carbon credits will be available for planting new forest but not for preserving what is already there. This may change. At a climate meeting in Montreal in November, nine rainforest countries, led by Papua New Guinea and Costa Rica, proposed that countries that reduce deforestation below a given baseline be eligible for carbon credits, which others could then “buy�instead of cutting the fuel dispenser ir own emissions. The idea seems to be gaining diplomatic traction. It would be a way to set voluntary targets for developing countries, which are now exempt from Kyoto s emission caps. That might encourage rich countries to accept new targets after the current ones expire in 2012. Hard as it is to reduce deforestation, it is easier than changing the way economies burn energy. Brazil, which had flatly rejected payments for avoiding deforestation, has softened. It has said it will consider incentives, though not carbon credits (which would compete with the nascent business of selling other carbon-reduction projects through Kyoto s “clean development mechanism�. IPAM, a Brazilian research institute that is pressing for another scheme for using carbon credits, calculates that the country could earn nearly $500m a fuel dispenser