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E-822-9-E
Ins. No.
STEAM FLOW COMPUTER
MODEL : EL406
Every OVAL product is fabricated and shipped from our factory under stringent quality control. In order
to maintain its design performance throughout its life, this manual offers the operator the necessary
installation, operation and maintenance information.
Be well familiar with these instructions before you place the computer in service and keep this manual at
the field location for ready reference.
We also recommended you to read the instruction manuals for the companion pulse generator (flowmeter)
and receiving instrument.
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Table of Contents
Related Manuals for Oval EL4061
Summary of Contents for Oval EL4061
- Page 1 STEAM FLOW COMPUTER MODEL : EL406 Every OVAL product is fabricated and shipped from our factory under stringent quality control. In order to maintain its design performance throughout its life, this manual offers the operator the necessary installation, operation and maintenance information.
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Page 2: Table Of Contents
E-822-9-E CONTENTS 1. GENERAL ..........................3 〈FEATURES〉 ........................3 2. PART NAMES......................... 3 3. OUTLINE DIMENSIONS ......................3 4. INSTALLATION ........................4 4.1 Installation Location ......................4 4.2 Mounting Panel ........................ 4 4.3 Installation Procedure ...................... 4 5. WIRING ..........................5 5.1 Cables for Field Wiring .................... -
Page 3: General
E-822-9-E 1. GENERAL Dedicated for steam service, this computer accepts signals from a steam service delta flowmeter. It contains a microprocessor to perform steam pressure setting relative to service pressure, size (nominal bore) setting and meter error adjustment, and indicates the total flow in terms of weight for accurate, precise flow measurement. -
Page 4: Installation
E-822-9-E 4．INSTALLATION Unit：mm 95 min. 4.1 Installation Location Select an installation location where 95 min. （1）Mechanical vibration, shock and corrosive gases least exist. （2）Air is dry and temperature at room temperature and stable. −0.7 0 NOTE: Although the manufacturer guar- a n t e e s s t a t e d p e r f o r m a n c e a t −0.7 0... -
Page 5: Wiring
E-822-9-E 5. WIRING 5.1 Cables for Field Wiring （1）Use electrostatically-shielded, polyethylene-insulated, vinyl-sheathed control cables, or equivalent, for input signal cables (CEVS 1.25-2.00mm , 2-conductor). For signal cables, vinyl-insulated, vinyl- sheathed cables (CVV, CVS, JIS C 3401) are recommended. （2）Ground the cable shielding to terminal "G" of the instrument. All circuitry on the detector side must be "floated"... -
Page 6: Overall Block Diagram
E-822-9-E 6．OVERALL BLOCK DIAGRAM SETTING RANGE 0.5A or 1A INSTANTANEOUS POWER 0.00 to 1.99MPa POWER INTERRUPTION DETECTOR POWER SOURCE AND POWER RESET CKT. SUPPLY PRESSURE SETTING SWITCH CURRENT LIMIT POWER TO PULSE AND OVERCURRENT METER ERROR, FREQ. DETECTOR CIRCUIT GENERATOR DIVISION. APPLICABLE 7-DIGIT STANDARD SETING JUMPERS TOTAL COUNTER CHECK/RUN FLOWRATE WAVESHAPING INTERRUPT CKT. CONTROL CKT. PULSE INPUT TEST F/I CONVERTER WEIGHT CIRCUIT ANALOG OUTPUT (OPTION) CHECK/RUN SELECT SWITCH... -
Page 7: Meter Error, And Scaler Settings
E-822-9-E 8．CHANGING THE PULSE GENERATOR TYPE, SIZE (nominal bore), METER FRROR, AND SCALER SETTINGS (They are correctly set in the factory before shipment and normally require no further alterations.) （1）Input Settings Relative to Pulse Generator Type Flowmeter Pulse Generator Type （jumper）... -
Page 8: Pulse/Analog Converter Board (Option)
E-822-9-E 9．PULSE/ANALOG CONVERTER BOARD (OPTION) An F/I converter board to provide an analog output proportional to the pulse frequency after weight conversion may be added as an option. （1）0 to 100 μ A or 0 to 10mV output ★ Output adjustment is made with VRI. （2）... -
Page 9: Operation Flow Chart
E-822-9-E 12．OPERATION FLOW CHART RUN MODE FLOW CHART CHECK MODE FLOW CHART RUN MODE CHECK MODE LED blinks Shows the for 2 sec. check mode. Size setting Checks input correct? Total counter and output counts 3 pulses; circuits with a LED lights in simulated pulse synchronism. train (1hZ). Shows pressure LED blinks Pressure setting being for 2 sec. changed? reviewed. Press.setting LED lights for pre- set number at in- one l.h. digit tervals of 0.5 sec. (0, 1). LED lights at intervals of LED lights Division by 2 sec. - Page 10 E-822-9-E Meter Size is shown in inches: LED lights for the Indicates the rotary switch position currently set up. preset number at Postitions A,B,C,D,E, and F are indicated by blinking intervals of 0.5 sec. 10,11,12,13,14, and 15 times, respectively. LED lights for 0.5 sec. Meter error set? LED blinks twice Meter error for a second. set or not Shows whether positive correction or negative correction. Positive correction? 1/10 Freq. division set or not NO (1/100) Freq. division LED lights once. LED lights twice. set? YES (1/10) LED lights for 0.5 sec. LED lights for 2 sec. LED lights for the Shows the first digit of preset number at the figure in percent (0 to 3). intervals of 0.5 sec. RUN MODE LED lights for 0.5 sec. LED lights for the Shows the last digit of preset number at...
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Page 11: Product Code Explanation
E-822-9-E 13．TOTAL COUNTER AND OUTPUT UNITS Totalizer Open Collector Mass Pulse Output Delta Flowmeter Analog Output Least Significant Digit, kg Nominal Diameter Min, Full Scale Flowrate,kg/h ※ 2 Scaling 1/10 ※ 1 1/100 1/10 1/100 0.01 0.001 0.01 0.01 0.001 0.01 0.01 0.01... -
Page 12: General Specifications
E-822-9-E 15．GENERAL SPECIFICATIONS Always N Output item 2 Output item 3 Always N Output item 1 Always N Input signal Version code Power supply Characteristic Model ① ② ③ ④ ⑤ ⑥ − ⑧ ⑨ − ⑪ ⑫ ⑬ ⑭ ⑮ ⑯ ⑰ ⑱ ⑲ ⑳ − ㉒ / / / Additional code Main code Main code Additional code ●... - Page 13 The new product code has been implemented since April 2017. Therefore, the product code explanation of the old product code will not be updated after April 2017. Contact OVAL if you wish to order with the old product code for reasons such as type approval. Code No.
- Page 14 E-822-9-E 2019.04 Revised △ All specifications are subject to change without notice for improvement. E-822-9-E (1)
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