U501-B Pulse sensor

U501-B 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 70degree

RPM: Max 3000RPM

Mounting: With 3 pcs. M4 screws

Weight: Approx. 340 gram. Excl. the cable

Wiring:

Color Channel plug

Red +5V 2

Green CH1 3

Blue CH2 4

Yellow 0V 5

Package:

Cross Weight Dimension

340g/case of 1 186x157x29mm/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-B 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 available 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

This device often is installed on check valve, hose pipeline also release certain hydraulic pressure. Pipe Resonance Apart from hydraulic stock, other hydraulic components also cause a certain degree of noise in pipeline, such as vane pump, overflow valve, vapor separator, measurement transducer, solenoid valve and nozzle. Sometime pipe resonance will be generated if the inherent frequency of pipe equivalent to hydraulic pulse resulted from hydraulic components of fuel dispenser. At that time, the normal working state will be affected, which is harmful to staff’s health due to intensi fuel dispenser ve noise. In order to explain this problem, the inherent frequency of pipe is introduced here. Pipe inherent frequency is: ω0 = kπ/2 l2 ·EJgGd+Gj (2-14) In the above formula: ω0 ── inherent frequency of pipe l ── supporting point distance E ── elastic modulus of pipe material J ── inertial moment of pipe section g── acceleration of gravity Gd── weight of pipe per meter Gj──liquid weight in per meter of pipe K── modifying coefficient K= 1-pA+mv/2π2EJA/l2 (2-15) In above formula: A ──pipe section m ──liquid weight in per meter of pipe v ──velocity of flow of liquid in pipe Several relative parameters affect the inherent frequency of pipe in Formula 2-14. Therefore, most manufacturers pay much attention to these elements that affect pipe inherent frequency and pulse frequency of hydraulic components in the design and manufacture of fuel dispenser, making the two frequencies as much different as possible so as to appear pipe resonance in fuel dispenser. 3. Hose used for fuel dispenser There are two kinds of hose used in fuel dispenser fuel dispenser. one is made according to GB/T10543 Rubber Hose Used for Refueling and Discharge of Airplane, connected oil indicator with nozzle; the other kind of hose is used in fuel dispenser with vapor recovery device, not only connecting oil indicator with nozzle, fuel dispenser

t period of 8 seconds. However if a recipient　　 node is unable to respond it must reply with an ACK. If for instance the device was　　 busy it replies with a MSG_ACK of NAK7 or if the Read Message contains an　　 invalid database address the device replies with a MSG_ACK of NAK6.　　 An Answer Message is a message which provides to the originator of a Read　　 Message all the requested data elements.　　 A Write Message is used to send data from an originator to a recipient device. The　　 identifier of the dat fuel dispenser a element is defined in the recipient device. It is possible to write a　　 multiple data elements in the one command. This is achieved by issuing a message　　 including a list of data elements and their values.　　 Sending a Command is considered as writing a data element with no value. The　　 same message is able to send commands and data elements used as parameters.　　 The recipient must respond to the Write Message with an Acknowledge Message　　 within the time-out period of 8 seconds.　　 An Unsolicited Data Message with Acknowledge is used for sending data　　 elements. The recipient must respond to this message with an Acknowledge　　 Message within the defined time-out of 8 seconds.　　 The only difference from a Write Message is that the data elements (database　　 address data identifier data element contents) are defined in the originator device.　　 An Unsolicited Data Message without Acknowledge is used for sending data　　 elements (e.g. status change error) where the recipient must not fuel dispenser respond to the　　 message.　　 The Acknowledge Message is used by the recipient of a message (write　　 unsolicited with acknowledge) to respond.　　February 2006 IFSF - STANDARD FORECOURT PROTOCOL fuel dispenser

César Raúl Ojeda of the Party of the Democratic Revolution (PRD), has been performing some alchemy of his own—turning what had been his solid lead in the polls this summer into a double-digit deficit. Mr Ojeda is closely linked to Mr López Obrador, also from the PRD, who won almost 60% of the vote in Tabasco in the presidential election on July 2nd. He has spent the past few weeks at Mr Ojeda s side, trying to revitalise a campaign that flagged during the months of protests instigated by Mr López Obrador against alleged electoral fraud after losing the July poll to Felipe Calderón fuel dispenser of the National Action Party (PAN) by just 0.56% of the vote. Mr Granier, by contrast, although a member of the PRI for over 25 years, is distant from Roberto Madrazo Pintado, another tabasqueño and the PRI s failed presidential candidate. Mr Madrazo, a former governor of Tabasco and PRI leader from 2002-05, who trailed far behind both Mr Calderón and Mr López Obrador in the presidential vote, is now “out of politics� says Mr Granier firmly. Tabasco is one Mexico s most prosperous states and site of much of its plentiful (though possibly declining) oil reserves. Yet both the leading gubernatorial candidates have focused on the lack of resources for the state s poor. Coming from parties whose ideologies are well nigh indistinguishable, it is no surprise that their campaign proposals are also markedly similar; both trumpet the sort of new infrastructure projects that tend to characterise local politics. Indeed, the only substantive issue between them is how to deal with the PAN. The party is almost non- existent as a political force in the state (its candidate is unlikely to get more than 5% of the vote in Sunday s p fuel dispenser oll), but Mr Granier promises to work with Mr Calderón, while he is anathema to Mr Ojeda. This accounts for the polarised atmosphere in the campaign, exacerbated by comically biased local newspapers on both sides. The impact of Sunday s election will be felt well beyond Tabasco. fuel dispenser