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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.


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.


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


Color Channel plug

Green +5V 2

Black CH1 3

Yellow 0V 4

Blue CH2 5

Red +5V 6

-- --- 1


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.


Cross Weight Dimension

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


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.

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technical archives

    Diagram 3-28: Key command processing flow Article V IC card filling system security Intellectual IC card operation system --- COS 7 intellectual IC card, invented as early as 1968, has another name ---smallest PC (personal computer) from v fuel dispenser ery starting. IC card, according to principle of desktop, also needs a set of operating system as platform, that is, COS (Chip Operating System). From the view of its position in intellectual card, it is much more like past DOC in personal computer. COS as core of intellectual card technology, all c fuel dispenser ommands from exterior should be processed in operating system. This system is developed along with integrated circuit card from EEPROM to intellectual card with microprocessor. Compared with general operating system, operating system in card has many traits: address system security; COS is not a universal operating system because it is developed by various manufacturers. Yet, different commercial COS should be designed and developed in line with a basic and general international standard so that make sure the openness of system. Because of adopting unified interface in one factory, different chips may also provide same interface with similar functions. Safety threat and solution to IC card system The security of COS safety protection has integrated many current and matured safety technologies, its reliability lie in the following 3 items: Secrecy: adopt encryption to deal information, preventing illegal store and withdrawal data. Integrality: hinder illegal alteration of information including modification, deletion and increase, etc. Authenticity: system has ability to verify the sender and receiver of data, ensuring data valid and authentic. IC card applied system may be attacked during working. Some are by malice, others unconscious. The concrete attack methods are divided into 3 categories: Method I: Fake card, including fabricated card, changing card in operation, etc. Method II: compromised card, employing lost card or larcenous card to conduct operat fuel dispenser

technical specification

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