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Oval EL4131 Instruction Manual

Temperature/pressure compensated flow computer (liquid service)
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Ins. No. E-883-4N-E
Temperature/pressure compensated
FLOW COMPUTER
(Liquid service)
Model EL4131
This manual has been prepared to provide you with the information pertinent to the Temperature/
Pressure Compensated FLOW COMPUTER (Liquid service).
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 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.
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Summary of Contents for Oval EL4131

  • Page 1 Temperature/pressure compensated FLOW COMPUTER (Liquid service) Model EL4131 This manual has been prepared to provide you with the information pertinent to the Temperature/ Pressure Compensated FLOW COMPUTER (Liquid service). 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 this instrument.

  • Page 2: Table Of Contents

    E -- 883 -- 4N -- E TABLE OF CONTENTS ......................4 1. BEFORE YOU BEGIN 1.1 Confirming the Nameplate ..................... 4 1.2 Transportation Precautions ..................... 4 1.3 Storage Precautions ......................4 ..........................5 2. GENERAL 2.1 Features ..........................5 2.2 Part Names ...........................
  • Page 3 E -- 883 -- 4N -- 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 ……………………………………………………………………………… 23 6.

  • Page 4: Before You Begin

    E -- 883 -- 4N -- 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 transit. 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

    E -- 883 -- 4N -- E 2. GENERAL Using the most advanced electronic tehcnologies, this digital instrument has been developed specifically to meet the most demanding liquid flow measurement applications where accuracy is the prime requirement. In response to the liquid flowrate and temperature information arriving from the sensing terminal, such as a flowmeter, it totalizes the flow while implementing meter error and temperature corrections.

  • Page 6: Installation

    E -- 883 -- 4N -- E 3. INSTALLATION 3.1 Outline Dimensions All dimensions in millimeters Hold-down Fitting TB 1 TB 1 TB 2 TB 2 EL4001 MODEL TB 3 232.4 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 Min.120...

  • Page 7: Wiring

    E -- 883 -- 4N -- 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 E -- 883 -- 4N -- E Table 4.2 Terminal Connections Label Description Label Description SUP. -wire generator SIG. （＋） -wire generator Flow in （−） Output sync with OUT 1/1 （＋） input signal (O.C.) ＋ Uncorr. or corr. instant flowrate Analog out 4 to 20mADC/1 to 5VDC −...

  • Page 9: General Specifications

    E -- 883 -- 4N -- E 5. GENERAL SPECIFICATIONS Table 5.1 Item Description Pulse Speed of Signal name Power to generator response generator 8V 2-wire current pulse OPTO 01, 02 8.5VDC 2kHz Contact closure pulse PG20 50Hz 13.5VDC Allowable 2-wire, 12VDC 3-wire PG30, current...

  • Page 10: Internal Components And Functions

    E -- 883 -- 4N -- E 6. INTERNAL COMPONENTS AND FUNCTIONS 6.1 Front Panel 6.1.1 Display The display is a 128 X 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 On-Screen Menu Items The units of measurement vary with configuration.

  • Page 11: Front Panel Keypad

    E -- 883 -- 4N -- E 6.1.4 Front Panel Keypad The eight front panel key switches consist of two kinds of keys - functions keys and shift keys. ・Function keys: Four round keys Mainly used for function selection, such as activating the input conditions selected and recon- figuration.

  • Page 12: Calculation Formulas

    E -- 883 -- 4N -- E 7. CALCULATION FORMULAS 7.1 Implementation of Meter Error Correction (Total flow before correction) = a×Ip×(1 + E/100) where Q : Total flow corrected for meter error ［ l］ a: Meter factor ［ l/P］ Ip: Number of input pulses E: Meter error correction value ［%］...

  • Page 13: Preparational Checks And Operation

    E -- 883 -- 4N -- E 8. PREPARATIONAL CHECKS AND OPERATION 8.1 Preparation Before Operation (1) Ensure that the instrument and related equipment are correctly installed and wired with no place left unfinished. WARNING: Make sure to see that the power terminals are connected to a power source of the rated voltage.

  • Page 14: Troubleshooting

    E -- 883 -- 4N -- E 9. TROUBLESHOOTING Reminder: If internal trouble is suspected, seek our service at the nearest sales office or customer service representative in your area. Table 9.1 Symptom Check Possible Causes Display is dead. 1. Inspect fuse. 1.

  • Page 15: Error Messages

    E -- 883 -- 4N -- E 10. ERROR MESSAGES Table 10.1 List of Error Messages Error Message Description ADJUST DATA ERROR After adjusted, error of allowable range check A/D CONVERT ERROR A/D converter circuit error DENSITY CONVERT ERROR Density converter circuit error TEMP 1 (PT) OVER Temperature Pt input 1 overflow TENP 1 (PT) UNDER...

  • Page 16: Overall Block Diagram

    E -- 883 -- 4N -- E 12. OVERALL BLOCK DIAGRAM...

  • Page 17: Product Code Explanation

    E -- 883 -- 4N -- E 13. PRODUCT CODE EXPLANATION Output item 1 affix code Output item 2 Output item 2 affix code Output item 1 Output item 3 Others Output item 3 affix code Density input Output item 4 Pressure input Analog output hard Temp.
  • Page 18 E -- 883 -- 4N -- E Output item 1 affix code Output item 2 Output item 1 Output item 2 affix code Output item 3 Others Output item 3 affix code Density input Output item 4 Pressure input Analog output hard Temp.

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