Oval EL4501 Instructions Manual Download Page 17

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E-888-5-E

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12. OVERALL BLOCK DIAGRAM

Power

Flow input

1/1 output

Density input

Press. input

Temp. input

Analog output

Pulse output 1

Pulse output 2

Pulse output 3

Com port

Terminal Block

Address path

Data path

Power Board

Interface Board

Communication Board

CPU Board

I/O Board

Power Unit

Internal Power

Flow Input Ckt.

Dens. Input Ckt.

A/D

Converter

Press. Input Ckt. (analog)

Temp. Input Ckt. (analog)

Temp. Input Ckt. (Pt)

Analog Output Circuit

Pulse Output Circuit 1

Pulse Output Circuit 2

Pulse Output Circuit 3

Multi plexer

Isolation

Test Pins

Internal

Volt.

Buzzer

Motherboard

Keyboard

IC Card

128×128 dots

ST Display

RUN

×8 keys

Isolation

Parallel I/O

Timer Counter

Parallel I/O

CPU

20MHz

Memory

RS485

Isolation

IC Card Interface Circuit

32.768kHz Real Time

Clock

Lithium Battery

Isolation

Power Detect

Fuse

Summary of Contents for EL4501

Page 1: ...he information and knowledge contained in this manual you can expect the best possible results over a long service life of this instrument Keep this manual for ready reference It is suggested that the instruction manuals for the companion pulse generator flowmeter and receiving instrument be referred to at the same time Multipoint temperature compensated FLOW COMPUTER MODEL EL4501 ...

Page 2: ...ror Correction Formula E Correction Factor in Implementation of Temperature Correction on Petroleums 5 Flow Calculation Formula 8 PREPARATIONAL CHECKS AND OPERATION 8 Preparation Before Operation 8 Preparational Checks 8 Operation TROUBLESHOOTING 5 0 ERROR MESSAGES BEHAVIOR IN ERRATIC CONDITIONS OVERALL BLOCK DIAGRAM PRODUCT CODE EXPLANATION 8 CONVENTIONS Shown in this manual are the signal words ...

Page 3: ...E 8 EL 0 0 EL 50 5 0 DIP SWITCH CONFIGURATION 8 Model with communication capabilities COMMUNICATION MANUAL Ins No E 880CM E CONTENTS COMMUNICATION CAPABILITY OVERVIEW 5 NETWORK CONFIGURATION 5 MODE SELECTION LOCAL REMOTE SELECTION 8 5 SETUP ITEMS FOR COMMUNICATION 0 COMMUNICATION PROCEDURE COMMUNICATION FORMAT 8 BCC SUM CHECK 5 CR LF 0 CODES ASSIGNED TO UNITS 8 ASCII CODE ...

Page 4: ...you inquire supply complete informa tion as to the product name model number product number ratings and other pertinent information 1 2 Transportation Precautions In order to safeguard against damage during transit transport your instrument to the installation location in the original package used for shipment from the factory if possible Use care to avoid impact shocks to the instrument during tr...

Page 5: ...he total flow readings readily permit the application engineer to build a petroleum products measurement system with this single instrument Changing the meter factor ranges of temperature or other parameters of the companion flowmeter is simple by keystrokes on the front panel keypad or by inserting an IC card into the slot Built around a microprocessor the instrument carries out calculations enti...

Page 6: ...e placed in service at room temperature Provide a sufficient working space behind the instru ment at least 50 centimeters from the back panel of the instrument to facilitate wiring and servicing 3 2 2 Panel Use a rigid steel sheet with a minimum thickness of millimeters mm thick is recommended If it is required to install instruments alongside each other dimensions in Fig are suggested Recommended...

Page 7: ...e good electrical connections Terminals are found on the back of the instrument Fig 4 3 Description of Terminal Blocks for External Connections Terminal blocks for external connections TB TB and TB are found on the back of the instrument as shown in Fig Terminal identification appears in Table while terminal connections appear in Table NOTE TB and TB terminal numbers are indicated on the side of t...

Page 8: ... relay A 8 8 Pulse out No polarity Total flow corrected for viscosity Static relay 0 Pulse out No polarity Total flow corrected for viscosity and temperature Static relay 0 TB No Label Description Power H 85 to VAC or 0 to 0VDC N Ground Screws on the terminal block M 5 Table Terminal Connections Output sync with input signal O C wire generator Pt 00Ω wire to 0mADC to 5VDC wire generator ...

Page 9: ...et viscosity μ To the st decimal place mPa s is selected Overall meter error To the th decimal place Vol conversion factor To the th decimal place Field labeled measurement unit Oil kind Correction factor E To the th decimal place Correction factor E To the th decimal place Frequency To the th decimal place Error alarm Number of occurring error error message Correc tion range Density Crude oil 0 0...

Page 10: ...nd indicated Temperature TEMPERATURE The temperature value currently fed to the instrument is indicated to the second decimal place If a problem arises in the course of temperature conversion such as out of scale a default fallback value is indicated 5 Set density SET DENSITY ρ Density value set up in the SET mode is indicated Set viscosity SET VISCOSITY μ Viscosity value set up in the SET mode is...

Page 11: ...eys Fig Touch Key Operation 6 1 3 Error Messages When an erratic condition arises an error message automatically appears on the display The information represented by error messages are listed on page If two or more concurrent errors are involved individual messages will be scrolled at intervals of approximately seconds When an error condition disappears an error message automatically goes out and...

Page 12: ...eference temperature t0 Temperature α and β Thermal expansion coefficients No μ μ μ μ Q E E E E S Q E E E E S 8 Q8 E8 E8 E8 E8S Q E E E E S Viscosity Flow velocity Hz If μ Set viscosity μS μ E S E E E Similarly factors are determined from E S to E S The same applies to determining factors in the case μ μS μ Next from QS Q through Q are determined Qn which is nearest to QS Qn EnS and EnS are determ...

Page 13: ...5 8 0 0 Light oil heavy oil 0 8 0 ρ 5 0 50 8 0 8 LUBE Petroleum derived lubricants 0 8000 to 0 0 0 0 8 7 5 Flow Calculation Formula Total flow corrected for viscosity Total flow corrected for viscosity is expressed as Qμf Q0 E E where E Meter error correction factor dependent on viscosity and flow velocity E Meter error correction factor dependent on flowmeter body s volumetric expansion α Hence t...

Page 14: ...mation displayed See the KEY OPERATION MANUAL Inject a simulated input pulse train or density signal representing the type of the companion pulse generator Select display menu items of the total mass flow and total calorific flow and make sure that incoming pulses are being accumulated Also verify that pulse output and analog output are properly generated 5 Remove the simulated pulse input and com...

Page 15: ... Using key cards set up viscosity liquid kind and density values A fault in internal assembly While fluid is allowed to flow Fails to count pulses fails to produce a pulse output Input signal line correctly wired Pulse signal coming in Pulse generator specifications matched Incorrect input wiring Pulse generator itself is faulty A fault in internal assembly Faulty total counter reading Temperature...

Page 16: ...r circuit error DENSITY CONVERT ERROR Density converter circuit error TEMP PT OVER Temperature Pt input overflow 5 TENP PT UNDER Temperature Pt input underflow TEMP PT OVER Temperature Pt input overflow TEMP PT UNDER Temperature Pt input underflow 8 TEMP ANA OVER Analog temperature input overflow TEMP ANA UNDER Analog temperature input underflow 0 TEMP ANA OVER Analog temperature input overflow TE...

Page 17: ...ow Input Ckt Dens Input Ckt A D Converter Press Input Ckt analog Temp Input Ckt analog Temp Input Ckt Pt Analog Output Circuit Pulse Output Circuit 1 Pulse Output Circuit 2 Pulse Output Circuit 3 Multi plexer Isolation Test Pins Test Pins Internal Volt Buzzer Motherboard Keyboard IC Card 128 128 dots ST Display RUN 8 keys Isolation Isolation Isolation Isolation Parallel I O Timer Counter Parallel ...

Page 18: ...ection pulse width 1ms V 5 After viscosity correction pulse width 50ms V 9 After viscosity correction special pulse width T 1 After viscosity temp correction pulse width 1ms T 5 After viscosity temp correction pulse width 50ms T 9 After viscosity temp correction special pulse width A L Alarm output Z Z Special Output item 2 affix code N Non Output item 3 Pulse output 3 B 1 Before correction pulse ...

Page 19: ...glish D W J Wiring diagram Japanese D W E Wiring diagram English D T J Inspection procedure Japanese D T E Inspection procedure English C B J Inspection certificate B set Only Japanese Customer witness inspection V 1 0 Required Model Input pulse signal Power supply Output item 1 affix code Output item 3 affix code Analog output hard Output item 4 Version code Communication function Characteristic ...

Page 20: ...ure Input 0 None 1 Pt 100Ω at 0 2 4 to 20mADC 1 to 5VDC 9 Special Pulse Output 1 Uncorrected pulse pulse corrected for viscosity pulse corrected for viscosity and temperature 9 Special Analog Output １ Temperature ９ Special Communication Capability ０ No EL4501 １ Yes EL4511 Finish １ Munsell N1 5 PRODUCT CODE EXPLANATION OF THE OLD PRODUCT CODE The new product code has been implemented since April 20...

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