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Ins. No. E - 886 - 2 - E
DENSITY COMPUTER
Model EL4301: Density Computer for Mass Flowmeter
Model EL4311: Density Computer for Mass Flowmeter
(with solids proportion calculation feature)
Model EL4321: Density Computer for Spool Densitometer
(gas service)
Model EL4331: Density Computer for Spool Densitometer
(liquid service)
This manual has been prepared to provide you with the information pertinent to the DENSITY
COMPUTERS. These models have the description in common except where noted.
With the proper application of the information and knowledge contained in this manual, you can
expect the best possible results over a long service life 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 time.
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Summary of Contents for Oval EL4301
- Page 1 Ins. No. E - 886 - 2 - E DENSITY COMPUTER Model EL4301: Density Computer for Mass Flowmeter Model EL4311: Density Computer for Mass Flowmeter (with solids proportion calculation feature) Model EL4321: Density Computer for Spool Densitometer (gas service) Model EL4331: Density Computer for Spool Densitometer...
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Page 2: Table Of Contents
11. BEHAVIOR IN ERRATIC CONDITIONS ................... 20 12. GENERAL SPECIFICATIONS 12.1 EL4301 Density Computer for Mass Flowmeter ............... 20 12.2 EL4311 Density Computer for Mass Flowmeter (with solids proportion flowrate calculation feature) ............21 12.3 EL4321 Density Computer for Spool Densitometer (gas service) ........22 12.4 EL4331 Density Computer for Spool Densitometer (liquid service) ........ - Page 3 E - 886 - 2 - E COMPANION VOLUME KEY OPERATION MANUAL Ins. No. E-880TM-E CONTENTS 1. KEY ARRANGEMENT ......................10 2. DISPLAY SCREEN ....................... 11 3. INITIAL CHECK ........................14 4. MODE SELECTION ......................18 5. RUN MODE SCREEN ......................
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Page 4: Before You Begin
E - 886 - 2 - E 1. BEFORE YOU BEGIN Every OVAL product is thoroughly tested and inspected before shipment from our factory. When received, its appearance should be inspected for possible damage by rough handling during tran- sit. First of all, thoroughly read the handling precautions described in this section. For topics other than those covered in this section, refer to the respective sections of this manual. -
Page 5: General
(6) Displays the percent concentration of solids content in the slurries and provides its analog output (EL4301 only). (7) Produces high and low density alarm outputs (set to desired limits) (EL4301 only). (8) If an error occurs, its nature is identified as an error message on the display. -
Page 6: Installation
E - 886 - 2 - E 3. INSTALLATION 3.1 Outline Dimensions All dimensions in millimeters Hold-down Fitting EL4001 MODEL 232.4 Fig. 3.1 Outline Dimensions 3.2 Installation 3.2.1 Installation Location Select an installation site where: (1) Mechanical vibration, shock and corrosive gases are negligible. -
Page 7: Wiring
E - 886 - 2 - E 4. WIRING (See the Wiring "Guidelines" in the instruction manual of the companion pulse generator.) 4.1 Field Wiring Cables (1) Use electrostatically shielded, polyethylene insulated, vinyl sheathed control cables (CEVS, 1.25-2 mm, 2-conductor or 3-conductor), or equivalent, for input signal cables from the flowmeter. For output signal cables, use insulated vinyl sheathed cables (CVV, CVS ... -
Page 8: Terminal Identification
E - 886 - 2 - E 4.3.1 Description of Terminals (1) Terminal Identification Table 4.1 EL4301 Terminal Identification Label Label Label Label SUP. ＋ Alarm out 2 SIG. Density in － ＋ Analog out － Temp. in － ＋... - Page 9 E - 886 - 2 - E (2) Terminal Connections Table 4.4 EL4301 Terminal Connections Label Description Label Description ＋ Corrected density or concen- Analog out tration; 4 to 20mADC/1 to 5VDC － Pt100Ω 3-wire High alarm Alarm out 1...
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Page 10: Product Code Explanation
E - 886 - 2 - E 5. PRODUCT CODE EXPLANATION Table 5.1 EL4301 Product Code Explanation Product Code Item Description ① ② ③ ④ ⑤ ⑥ − ⑦ ⑧ ⑨ ⑩ ⑪ ⑫ Density Computer for Mass Flowmeter Model... - Page 11 E - 886 - 2 - E Table 5.3 EL4321 Product Code Explanation Product Code Item Description ① ② ③ ④ ⑤ ⑥ − ⑦ ⑧ ⑨ ⑩ ⑪ ⑫ Density Computer (for spool densitometer for gas service) Model E L 4 3 2 1 20 to 30VDC Power consumption: 20W max.
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Page 12: Internal Components And Functions
E - 886 - 2 - E 6. INTERNAL COMPONENTS AND FUNCTIONS 6.1 Front Panel 6.1.1 Display The display is a 128 × 128-dot multiple function display capable of showing the data, units of measure, error messages, and other information at the same time. (The display is backlighted.) 6.1.2 Front Panel Keypad The eight front panel key switches consist of two kinds of keys - functions keys and shift keys. -
Page 13: Display Items
The units of measure vary with instrument programming. You select the units of measure in the SET mode. NOTE: For complete details, see the Key Operation Manual. The information displayed (menu items) by model are described below (Tables 6.1 through 6.4). Table 6.1 EL4301 Display Items Display Item Description Density Before Correction Calculates density from density periods of the flowmeter and displays it. - Page 14 E - 886 - 2 - E Table 6.3 EL4321 Display Items Display Item Description Density Before Correction Transforms density pulse periods currently being fed from the densitometer into a (DENSITY) density reading and displays it. Displays density corrected for temperature and pressure. Corrected Density If an error occurs in density conversion, such as out of range, its default fallback value (DENSITY(C))
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Page 15: Calculation Formulas
: Density of water ［ g/ml］ : Line temperature ［° C］ : Temperature of water during calibration ［° C］ : Density period with air ［μs］ (EL4301) (EL4311) α: Temp. correction factor of tube spring const. ［%/° C］ : Density period ［μs］... -
Page 16: Preparational Checks And Operation
E - 886 - 2 - E Calculate Item Calculation Formula (Models) ＋ 273.15 0.101325 Molecular M ＝ d・ ・ ・1/X・MOL［g/mol］ 273.15 ＋ 0.101325 weight (EL4321) where MOL ＝ Volume at 0° C and 1 atm. 22.4136 ［l］ ＋ 273.15 0.101325 ... -
Page 17: Troubleshooting
E - 886 - 2 - E 9. TROUBLESHOOTING Reminder: If internal trouble is suspected, seek our service at the nearest sales office or cus- tomer service representative in your area. Table 9.1 Symptom Check Possible Causes Display is dead. 1. -
Page 18: Error Messages
E - 886 - 2 - E 10. ERROR MESSAGES Table 10.1 List of Error Messages Error Message Description ADJUST DATA ERROR Adjusted allowable range check error A/D CONVERT ERROR A/D converter circuit error DENSITY CONVERT ERROR Density converter circuit error TEMP 1. -
Page 19: General Specifications
E - 886 - 2 - E 12. GENERAL SPECIFICATIONS 12.1 EL4301 Density Computer for Mass Flowmeter Table 12.1 Item Description Resist. thermo- Pt 100Ω at 0° C, 3-wire system Rated current 2mA meter bulb Temp. input Input signals Analog 4 to 20mADC or 1 to 5VDC, 10mV/°... -
Page 20: El4311 Density Computer For Mass Flowmeter
E - 886 - 2 - E 12.2 EL4311 Density Computer for Mass Flowmeter (with solids proportion calculation feature) Table 12.2 Item Description 2-wire voltage pulse Flow input Speed of response 2kHz Open collector pulse Input Resist. thermo- Pt 100Ω at 0° C, 3-wire system Rated current 2mA signals meter bulb Temp. -
Page 21: El4321 Density Computer For Spool Densitometer (Gas Service)
E - 886 - 2 - E 12.3 EL4321 Density Computer for Spool Densitometer (gas service) Table 12.3 Item Description Resistance thermo- Pt 100Ω at 0° C, 3-wire system Rated current 2mA meter bulb Temperature input Input Analog 4 to 20mADC or 1 to 5VDC signals Pressure input 4 to 20mADC or 1 to 5VDC... -
Page 22: El4331 Density Computer For Spool Densitometer (Liquid Service)
E - 886 - 2 - E 12.4 EL4331 Density Computer for Spool Densitometer (liquid service) Table 12.4 Item Description Resistance thermo- Pt 100Ω at 0° C, 3-wire system Rated current 2mA meter bulb Temperature input Input Analog 4 to 20mADC or 1 to 5VDC signals Pressure input 4 to 20mADC or 1 to 5VDC... -
Page 23: Overall Block Diagram
E - 886 - 2 - E 13. OVERALL BLOCK DIAGRAM... - Page 24 E - 886 - 2 - E 2017.01 Revised 2008.08 Released All specifications are subject to change without notice for improvement. E-886-2-E (1)
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