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

oil, so as to reduce the volume of drained oil. Turn adjusting bolt clockwise to reduce discharge, fuel dispenser anticlockwise to increase discharge. Therefore, changing the position of bolt enable discharge approach academic volume and reach the requirements on measurement transducer of national appraisal regulations. As two regulative bolts access to adjusting piston, the adjusting discharge in a circulation per bolt can be calculated in the following formula: △V = 1/2πd12 nt (2--4 ) △V ── adjusting fuel dispenser value in per circulation; D1 ── diameter of regulative piston; n ── turning number of adjusting bolt; t ── screw- pitch of adjusting bolt. There is another metal piston measurement transducer in current market. See the Diagram 2-19. Regulative piston is singularly installed in piston rather than connect with rod in this model. Its adjusting value in terms of per adjusting bolt is: △V = 1/4πd2 nt (2--5 ) Common failure and Troubleshooting Metal piston fuel dispenser measurement transducer has the two common failures --- accuracy decline and mechanical trouble. Measure accuracy beyond scope The allowed measurement accuracy of fuel dispenser is ±0.3 %, repeated tolerance no more than 0.15 % according to the stipulation of JJG443-98 Fuel dispenser. The maximum allowed tolerance of min. measured valve don’t exceed ±0.5 %，its repeated tolerance no more than 0.25 %. The ratio of maximum flow (Q max.) to minimum flow (Q min.) is 10 to 1. as fuel dispenser leave factory. The ratio should not be less than 5: 1 in inspecting at operation locale. All of exceeded tolerance is regarded as beyond measurement accuracy. There are many elements and reasons resulting in measurement accuracy beyond scope, including unstable hydraulic system (extensive pressure fluctuation), electric system failure, thick colloid in frictional interface, measurement transducer abrasion, etc. The last two reasons will mainly be introduced in this article. Regulating adjusting

for mixed neutron　　sections of methane propane and dimethyl　　 fuel dispenser photon radiation fields　　ether　　 Measurements of neutron spectra on high-　　Energy-selective Faraday cup for the meas-　　 energy heavy-ion accelerators of the GSI in　　urement of the total electron scattering cross　　 Darmstadt　　sections in gases　　 fuel dispenser Investigation of measuring procedures for　　Generation of ionization clusters in　　 individual dosimetry at workplaces with　　nanometric volumes by particles　　 mixed neutronphoton radiation　　 109　　Ionizing Radiation　　International affairs　　Metrological equivalence between state insti-　　 fuel dispenser tutes for activity measurements　　The Radon Intercomparison 2001 to 2002 and　　the extension to the EUROMET Supplemen-　　tary Comparison　　International intercomparison for the realiza-　　tion of the activity concentration of　　radionuclides in ground-level air　　Evaluation of the comparison measurement　　CCRI(III)-K.10　　Further information　　Charge measuring device for the operation of　　ionization chambers　　 110　　 Ionizing Radiation　　111　　Ionizing Radiation　　 112　　 Reports from the Divisions　　Temperature　　and　　Synchrotron Radiation　　 Division　　 7　　 113　　Temperature　　Synchrotron　　Berlin Institute　　In its lecture-hall at the Hermann von Helm-　　holtz Building the PTB celebrated on Septem-　　ber 26 the 50th anniver

ster; £20 A young woman weds the Prince of Wales and finds that there are three in the marriage. fuel dispenser She seeks solace in the arms of a foreigner, attracts intense media attention, becomes the darling of the people, and after proceedings for divorce, dies suddenly. For sheer entertainment and political theatre, the story of Caroline of Brunswick far outstrips the tale of Diana, Princess of Wales. ______________________________________________ Politics and current affairs _________________________________ fuel dispenser _____________ Dangerous Nation America’s Place in the World from its Earliest Days to the Dawn of the Twentieth Century By Robert Kagan. Knopf; 544 pages; $30. Atlantic Books; £25 An absorbing and eye-opening interpretation of American foreign policy which argues that even before America was a nation its leaders anticipated that it was destined to be the dominant global power. Highly readable and full of information that will be new even to specialists. _____________________________ fuel dispenser _________________ The Looming Tower Al-Qaeda and the Road to 9 11 By Lawrence Wright. Knopf; 480 pages; $27.95. Allen Lane; £20 An impressive addition to the over-crowded world of al-Qaeda studies. Thoughtful and vividly written, this book traces the history of Islamic fundamentalism and brings to life the jihadists who conceived the attack on the twin towers and the officers of the CIA and FBI whose rivalries undermined efforts to thwart it. ______________________________________________ Guantánamo and the Abuse of Presidential Power By Joseph Margulies. Simon & Schuster; 322 pages; $25 A sober, and sobering, look at the policies and practices that have led to the internment of hundreds of men at Guantánamo Bay, without legal rights, and subject to degrading interrogations. Mr Margulies shows how the interrogation techniques echo those used by America’s bitterest enemies, the North Koreans, and later the North Vietnamese, on American soldiers. ___________________________