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E-886-2-E

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12. GENERAL SPECIFICATIONS

12.1 EL4301 Density Computer for Mass Flowmeter

Table 12.1

Item

Description

Input 

signals

Temp. input

Resist. thermo-

meter bulb

Pt 100

Ω

 at 0

°

C, 3-wire system  Rated current 2mA

Analog

4 to 20mADC or 1 to 5VDC, 10mV/

°

C, 5mV/

°

C

Density input

Tube period signal (from L.H. sensor)  

±

5V square wave

Output 

signals

Analog output

Corrected density 

or concentration 

(% mass)

4 to 20mADC (Max. load resistance 500

Ω

) or

1 to 5VDC (Output impedance 250

Ω

)  

Conversion accuracy: 

±

0.1% of F.S.

Alarm output 1

High alarm

With respect to the density corrected for temperature

Static relay 230VAC/340VDC, 0.1A

Alarm output 2

Low alarm

Alarm output 3

Static relay  Capacity: 230VAC/340VDC 0.2A

Display type

Display: ST display (128

×

128 dots), backlighted                              (

1), (

2)

Information displayed: Data, units, error message simultaneously

Menu

Items

Density before correction To the 4th decimal place (when g/ml is selected.)

Corrected density

To the 4th decimal place (when g/ml is selected.)

Temperature

To the 2nd decimal place (when 

°

C is selected.)

Density period

To the 1st decimal place (when 

μ

s is selected.)

% Mass

To the 2nd decimal place

Error alarm

Number of  error messages

Com-

puting 

range

Temperature

Pt 100

Ω

 at 0

°

C

Range: 

50 to +200

°

C

Std. Span: 70

°

C

4 to 20mADC or 1 to 5VDC

Range: 

200 to +200

°

C

Std. Span: 200

°

C

10mV/

°

C

Range: 

50 to +150

°

C

5

V/

°

C

Range: 

100 to +200

°

C

Density

0.0000 to 6.0000g/ml

Com-

puting 

accuracy

ULTRA 

mass

 MKII

(CN series)

Density before 

correction

±

0.001g/ml (Factory calibration accuracy: Option)

Corrected density

±

0.002g/ml (with 4 to 20mA or 1 to 5VDC temperature 

input)

±

0.006g/ml (with temperature input from Pt 100

Ω

 at 0

°

C, 

3-wire)      (

3)

Temperature

Pt 100

Ω

 at 0

°

C

±

0.3% of span

4 to 20mADC or 1 to 5VDC

±

0.1% of span

10mV/

°

C

5

V/

°

C

Clock IC backup battery

Lithium battery  Battery life: 10 years approx.

Communication (when communication 

interface is provided)

Interface: RS485  Multipoint (Up to 16 units can be connected.)

Dedicated protocol  Baud rate: 4800 bps standard  9600 bps max.

Transmission cable

Use 3-conductor shielded cable to the resistance thermometer bulb.

Loop resist. 5

Ω

 max. Example: 300 meters max. with 3-conductor 1.25mm

2

 

cable; 500 meters with 2.0mm

2

 cable

Power source

85 to 264VAC, 50/60Hz or 20 to 30VDC

Power consumption

20W max.

Ambient temperature

10 to 

50

°

C

Mounting

Panel mount

Finish

Munsell N1.5

Weight

2.5 kilograms, approx.

NOTES 

(

1): ST display stands for Super Twisted Nematic display.

(

2): Backlight life (luminance declined to one half its original luminance): 2500 hours, approx.

(

3): Depends on the accuracies of temperature input and density expansion coefficient of the fluid 

with respect to the uncorrected density.

(Accuracy is shown where density change is constant with respect to the difference between 

the temperature input and reference temperature.)

Содержание EL4301

Страница 1: ...of these instruments 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...

Страница 2: ...OMPONENTS AND FUNCTIONS 12 6 1 Front Panel 12 6 1 1 Display 12 6 1 2 Front Panel Keypad 12 6 1 3 Error Messages 12 6 1 4 Display Items 13 7 CALCULATION FORMULAS 15 8 PREPARATIONAL CHECKS AND OPERATION...

Страница 3: ...170 9 ABOUT EL4501 175 10 DIP SWITCH CONFIGURATION 182 Model with communication capabilities COMMUNICATION MANUAL Ins No E 880CM E CONTENTS 1 COMMUNICATION CAPABILITY OVERVIEW 5 2 NETWORK CONFIGURATI...

Страница 4: ...d 11 When you inquire supply complete infor mation as to the product name model number product number ratings and other pertinent information 1 2 Transportation Precautions 1 In order to safeguard aga...

Страница 5: ...nd provide an analog output EL4321 EL4331 This instrument receives density frequency signal from the density sensor and provides an analog output in proportion to the density of metered process fluid...

Страница 6: ...0 centimeters from the back panel of the instrument to facilitate wiring and servicing 3 2 2 Panel 1 Use a rigid steel sheet with a minimum thickness of 1 6 millimeters 3 2mm thick is recommended 2 If...

Страница 7: ...r circuits to minimize the possibility of inductive interference 3 Using crimp type lugs for wiring ensure good electrical coannections Terminals are found on the back of the instrument Fig 4 1 4 3 De...

Страница 8: ...3 0V 14 0V 4 OUT 1 1 15 5 b Temp in 16 6 B 17 Temp in 7 A 18 Comm 1 8 19 9 20 Comm 2 10 Alarm out 21 11 NOTE Model provided with communication interface NOTE If transmitter MT9411 temperature termina...

Страница 9: ...Pulse out 3 No polarity Alarm out Static relay 11 12 Density in SUP 13 SIG Tube period signal 5V square wave 14 0V TB2 No Label Description 1 2 3 4 Analog out Instant solids content flow 4 to 20mADC...

Страница 10: ...Code Description Model E L 4 3 1 1 Density Computer for Mass Flowmeter with solids content calculation feature Power 6 20 to 30VDC Power consumption 20W max 7 85 to 264VAC 50 60Hz Temperature Input 0...

Страница 11: ...1 Density corrected for temperature and pressure 9 Other than above special Communication Capability 0 No 1 Yes Finish 1 Munsell N1 5 Table 5 4 EL4331 Product Code Explanation Item Product Code Descr...

Страница 12: ...ving between menu items or changing numerical values 6 1 3 Error Messages When an erratic condition arises an error message automatically appears on the display NOTE The information represented by err...

Страница 13: ...plays it If it exceeds preset high or low limit its default fallback value is shown Total Mass Flowrate TOTAL COUNT Displays mass flow corrected for meter error Total Mass Flow of Solid Content TOTAL...

Страница 14: ...re pressure and density currently coming in and displays it Specific Weight SPECIFIC WEIGHT Calculates specific weight based on the temperature pressure and density currently coming in and displays it...

Страница 15: ...Xs Da Db Dx Dc Dx2 Ta Tb tx Tc tx2 100 where Xs Solids proportion Da to Dc Ta to Tc Coefficients to determine Xs Instant flowrate of solids content EL4311 Xs E Qsr Qr kg h Qr a f 1 3600 kg h 100 100 w...

Страница 16: ...instrument operates with no fluid flow How to Check 1 Couple sources of simulated temperature and pressure signals 2 Using the shift keys select menu items and verify the information displayed NOTE Se...

Страница 17: ...ulty 2 Pressure transmitter is faulty 3 A fault in internal assembly Faulty meter error correction factor and or temperature correction factor 1 Temperature and pressure readings correct 1 A fault in...

Страница 18: ...2 OVER Analog pressure input 2 overflow 25 PRESS 2 UNDER Analog pressure input 2 underflow 26 DENSITY OVER Density input overflow 27 DENSITY UNDER Density input underflow 28 4mA SCALER 1 UNDER Analog...

Страница 19: ...Std Span 200 C 10mV C Range 50 to 150 C 5 V C Range 100 to 200 C Density 0 0000 to 6 0000g ml Com puting accuracy ULTRA mass MKII CN series Density before correction 0 001g ml Factory calibration acc...

Страница 20: ...cimal place Solids content proportion To the 2nd decimal place Error alarm Number of errors error messages Com puting range Temperature Pt 100 at 0 C Range 50 to 200 C Std span 70 C 4 to 20mADC or 1 t...

Страница 21: ...ted Pressure To the 4th decimal place when MPa is selected Molecular weight To the 3rd decimal place when g mol is selected Specific weight To the 3rd decimal place Error alarm Number of errors error...

Страница 22: ...th decimal place when MPa is selected Molecular weight To the 3rd decimal place when g mol is selected Specific weight To the 3rd decimal place Error alarm Number of errors error messages Com puting r...

Страница 23: ...r Multi plexer 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 I O Board CPU Board Communicati...

Страница 24: ...E 886 2 E All specifications are subject to change without notice for improvement 2017 01 Revised 2008 08 Released E 886 2 E 1...

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