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Oval ULTRA UF-II LW76E Manual

Batch controller equipment
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Download this manual See also: Instruction Manual
Batch controller equipped
ULTRA UF-II
Every OVAL flowmeter 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 meter in
service and keep this manual at the field location for ready reference.
◆ About Meter Size Designation ◆
The size of OVAL positive-displacement flowmeters is basically identified by a two-digit
code. For complete details, see Section 15 PRODUCT CODE EXPLANATION.
Meter Sizes: 80 and 81
Register Model: LW76E (two-step open/shutoff)
B-529-3N-E
Ins. No.


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Summary of Contents for Oval ULTRA UF-II LW76E

  • Page 1 Meter Sizes: 80 and 81 Register Model: LW76E (two-step open/shutoff) Every OVAL flowmeter 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.

  • Page 2: Table Of Contents

    B-529-3N-E CONTENTS 1. BEFORE YOU BEGIN ........................4 1.1 Confirming the Nameplate ......................4 1.2 Transportation Considerations .......................4 1.3 Storage Considerations .........................4 1.4 Application Notes ...........................5 2. OPERATING CONDITIONS .......................6 3. GENERAL ............................6 3.1 General Description ........................6 3.2 Features ............................7 3.3 Part Names ............................8 3.4 About Safety Features ........................9 4.
  • Page 3 B-529-3N-E 9. INSPECTION ............................28 9.1 Register Inspection ........................28 9.2 Register Disassembly ........................29 9.3 Meter Body Disassembly and Inspection ..................3 9.3.1 Disassembly and Inspection Off the Piping Assembly ............3 9.3.2 Assembly ..........................33 9.3.3 Disassembly and Inspection as Installed in the Piping Assembly .........33 9.3.4 Reconditioning the Rotor Gear Teeth ..................34 9.3.5 Signal Generating Magnet Disassembly AND Reassembly Notes ........34 10.

  • Page 4: Before You Begin

    If a long-term storage is anticipated, take the following precautions: (1) Keep the Ultra UF-II in store in the same shipping container used for transportation from OVAL if possible. (2) Place of storage should conform to the following requirements: Free from rain and water.

  • Page 5: Application Notes

    In a case like this, we recommend to provide a dehumidifier, such as a dryer, to remove fluid to be drained and water content. NOTE: The above mentioned compressed air purification equipment are available from OVAL as an option. (4) About piping...

  • Page 6: Operating Conditions

    B-529-3N-E 2. OPERATING CONDITIONS To maintain the stated high accuracy and long service life of the Ultra OVAL, make sure that flowrate, pressure, temperature and viscosity are within the ratings as stamped on the meter register tag (page 4). ⇨  For product code explanation, see page 44.

  • Page 7: Features

    (battery life may vary according to the operating conditions). (A low battery alarm "BATT" flickers in the front LCD when the battery is near its life.) 2) Replacing the existing OVAL register (LW76) with this new model does not require another air source; the existing shutoff valve remains serviceable.

  • Page 8: Part Names

    B-529-3N-E 3.3 Part Names Measurement Unit Plate LCD Display (Total counter and Front Cover Fitting operation status) Hex Soc. Hd. Bolt Connecting Meter Body Flange Label Nameplate (Ratings shown) (Ratings shown) Register Front Cover Air Signal Connections OUT1 OUT2 EXT. GND Terminal STOP Button Register Body...

  • Page 9: About Safety Features

    B-529-3N-E 3.4 About Safety Features The register is provided with the following safeguards: (1) On detection of missing pulses Either condition 1) or 2) causes the indicator "ALM" in the display to light and the shutoff valve to close automatically for safety’s sake. 1) The register fails to count any pulses within preset missing pulse period (PL) from the moment a batch process started.
  • Page 10 B-529-3N-E (4) Upon detection of a parameter error in response to any error in parameter setting, an alarm message "DATA Err" appears in the display. 1) Each time button is depressed in this case, the display scrolls through available data so that the STOP ROT.

  • Page 11: Flowmeter Installation

    B-529-3N-E 4. FLOWMETER INSTALLATION 4.1 Considerations at Installation (1) The LCD display of Ultra UF-II equipped with a batch controller is designed to be seen down from upper point, rather than at the same level. (LEVEL) Take this into consideration when you decide its installation height.

  • Page 12: Standard Installation, Horizontal Line

    "A". Marked * is the space required for disassembly and inspection. BYPASS STRAINER ADAPTER ULTRA OVAL WITH SHUTOFF VALVE BATCH CONTROLLER 4.4 Example of Incorrect Installation (1) Do not install the meter in a position like this. WRONG! 4.5 How to Change Display Orientations (flow directions)

  • Page 13: Air Signal Line Connection Guidelines

    (1-step open/2-step close or 2-step open/2-step close) NOTE: For simplicity's sake, the Ultra OVAL (*) with a batch control feature is shown here in an upright position. In practice, the flowmeter should be installed in the physical orientation shown in Sections 4.2 and 4.3.

  • Page 14: Operation Time Chart And Pneumatic Circuit

    B-529-3N-E 5.3 Operation Time Chart and Pneumatic Circuit ■ Description of Operation Time Chart NOTE: Operation can best be understood by referring to the chart below. Upon depression of button, the shutoff valve opens to a predetermined position (initial flowrate). When a START ▲...
  • Page 15 B-529-3N-E ■ Pneumatic Circuit Coupled with a double torque cylinder ball valve SHUTOFF VALVE LW76E <Not in operation> OUT2 SIGNAL SHUTOFF VALVE AIR SOURCE AIR SOURCE OUT1 <Metering under initial flow control> OUT2 SHUTOFF VALVE SIGNAL AIR SOURCE AIR SOURCE OUT1 <Metering through fully open valve>...

  • Page 16: About Display And Pushbuttons

    B-529-3N-E 6. ABOUT DISPLAY AND PUSHBUTTONS 6.1 Display Functions Three pushbuttons - STOP/ROT., RESET/ START/▲ - are arranged on the front for controlling LCD DISPLAY a batch process and for setting parameters and variables. Located in the center of the display assembly is an 8-digit LCD to show characters 12.7 millimeters high.

  • Page 17: Pushbutton Inspection And Cleaning

    B-529-3N-E <LCD Display> Batch setpoint counter (6-digit) Lights to show an alarm Lights in response to pulses Flickers to show a low battery arriving at total counter BATT COUNT Lights at the end of a batch Lights in response to a shutoff Cumulative total counter (8-digit) valve operation signal output With LW76E (2-step open and close):...

  • Page 18: Pushbutton Functions

    B-529-3N-E 6.3 Pushbutton Functions NOTE: For pushbutton switch locations, see Fig. 6.2 on page 16. STOP button (red), internal button functions STOP ROT. ROT. Mode of Operation Functions Stops the batch process. (Shutoff valve operation signal: stops; LCD OUT A batch in progress. goes out.) Batch setpoint displayed (6-digit) + RUN status displayed Batch setpoint (not...

  • Page 19: Switch Functions

    B-529-3N-E 6.4 Switch Functions 6.4.1 Selecting Add and Subtract Counter SW-1 in the register internal assembly selects the add or subtract counter. SW-1 is located at the bottom of the register internal assembly. Set switch SW1-1 to either ADD or SUB. SW1-2 is a switch for the setup mode.

  • Page 20: Reconfiguration

    B-529-3N-E 7. RECONFIGURATION In most cases, the pushbuttons arranged on the register front cover do the job (Sec. 7.1). When the register front cover is removed for parameter changes (Sec. 7.2) or inspection, work with internal pushbuttons shown in Sec. 6.4 "Register Internal Assembly". 7.1 Establishing a Batch Setpoint To establish a new batch setpoint, reset, while the LCD shows the batch setpoint, the current setpoint and hold button depressed for more than 3 seconds.

  • Page 21: Example Of Establishing A Batch Setpoint

    B-529-3N-E 7.1.2 Example of Establishing a Batch Setpoint ● Shown below is the procedure to set up a batch at 123456 (in the add counter). Following resetting the current batch setpoint, hold button depressed for more than 3 seconds. STOP ROT.

  • Page 22: Parameter Setup (Cumulative Total, Scaler Factor, Frequency Division, Initial And Final Settings, Missing Pulse Detection, Overshoot Setting)

    B-529-3N-E 7.2 Parameter Setup (cumulative total, scaler factor, frequency division, initial and final settings, missing pulse detection, overshoot setting) (1) Open the register front cover (see Sec. 9.2 on page 29). RETAINER SETUP LABEL ADD RUN RESET BUTTON SW1−1 SW1−2 Fig.

  • Page 23: Operation In The Setup Mode

    B-529-3N-E 7.2.1 Operation in the Setup Mode On seeing that the entire front panel LCD is blinking (by the previously outlined steps), you can change parameters and variables as follows. The procedure to enter a figure remains the same as "An Example of Batch Setup"...

  • Page 24: Operation

    B-529-3N-E 8. OPERATION 8.1 Preparation Before Operation (1) Make sure to see that the flowmeter and associated equipment (shutoff valve, etc.) are correctly installed and connected with nothing left unfinished. WARNING: Make doubly sure that the shutoff valve and this flowmeter are correctly connected with air tubing.

  • Page 25: Operation With Actual Flow

    B-529-3N-E 8.3 Operation with Actual Flow At first-time operation with actual process fluid, careful observation of operations sequence which is described below is required. It is essential that the flowmeter be used within the specified flow range. (⇩Refer to the piping diagram below.) VALVE FLOW DIRECTION SHUTOFF...

  • Page 26: Starting A Batch Process

    B-529-3N-E 8.6 Starting a Batch Process 8.6.1 Preoperational Checks Before a Batch Process When you are through with all the preparations described in the previous sections, perform the following checks: (1) Parameters, batch setpoint, adding or subtracting counter mode are correctly established (see Sec. 7 or Sec.
  • Page 27 B-529-3N-E Starting a continual batch process START - Shutoff valve opens. ▲ When interrupted while shutoff valve was fully open: Restart at full open. lights up. When interrupted while shutoff valve was fully open: Top and bottom light up. Reaching the leading edge of final setpoint before target batch setpoint (LW76E register equipped model only) - Shutoff valve closes (1st step).

  • Page 28: Inspection

    An amorphous sensor output waveform appears. 10μs Accepts a simulated pulse train from the pulse checker (OVAL Model PC2201, for example). Used for making a loop check or other servicing. Input mode is Model PC2201's PG30 mode. Also accepts pulses with levels "0": 1V max. and "1": 3 to 12V, or open collector.

  • Page 29: Register Disassembly

    B-529-3N-E 9.2 Register Disassembly When you inspect or replace subassemblies, follow the procedure given below. NOTE: Removing only the internal assembly, battery pack, solenoid valve unit, or sensor unit does not require steps (1) and (2). CAUTION: Stop supply air to the shutoff valve and disconnect air signal lines beforehand.
  • Page 30 B-529-3N-E (7) Pull the internal assembly a little forward and (10) Draw the solenoid valve unit out of the register remove connectors CN1, CN2-1 (SV), and CN2-2 body. (MV) at the bottom of the battery pack. Now the solenoid valve is ready to be removed. CAUTION: With LW74E register, CN2-2 (MV) is unused.

  • Page 31: Meter Body Disassembly And Inspection

    ◎ Although it depends on individual operating conditions, periodic disassembly and inspection should be performed at least once a year. CAUTION: Because the Oval flowmeter is a precision industrial instrument, disassembly and inspection should be performed indoors as a rule. If...
  • Page 32 B-529-3N-E Match mark Match mark O-ring (5) Take off twelve fitting bolts (114) securing the (6) 1) Place the meter body with the flange face front cover, carefully lift and remove the front down. cover vertically. 2) Take off twelve rear cover fitting bolts (114) and remove the rear cover.

  • Page 33: Assembly

    B-529-3N-E (9) Remove the rotors (203) and (204) one after the NOTE: Mark individual thrust rings (209) with other. Because each rotor is integral with its identification marks to ensure their correct shaft, hold the rotor to be removed first in both installation with respect to respective hands and carefully slide it vertically out of the rotors at assembly.

  • Page 34: Reconditioning The Rotor Gear Teeth

    B-529-3N-E 9.3.4 Reconditioning the Rotor Gear Teeth UF-II Flowmeter Rotor The hatched areas of one rotor shown in the sketch at right indicate the areas in contact with the other rotor while they revolve. Do not attempt to recondition these areas unless it is absolutely necessary to do so due to undue wear found during disassembly and inspection.

  • Page 35: About The Battery Pack

    BATTERY PACK Never give impact shock or disassemble. Or loss of performance may possibly result. Battery packs are available at your nearest OVAL 3. For storage, keep moisture and dust out. sales representative or at OVAL Service Center. 10.1 Battery Life This battery is good for about 4 years.

  • Page 36: Troubleshooting

    B-529-3N-E 11. TROUBLESHOOTING NOTE: If troubleshooting below does not work at all, seek our service. SYMPTOM POSSIBLE CAUSE CHECKOUT AND COUNTERMEASURE Ref. page Remove register front cover to see if the battery pack Battery pack is not in place. is in place. Check voltage across test pin IN on the display board of internal assembly and terminal G of the housing.
  • Page 37 Taking pressure loss of the entire piping system into is low. account, adjust to the proper pump or head pressure. button START Oval rotors stuck with solids ▲ Referring to Sec. 9.3 "Flowmeter Body Disassembly", 31 to and locked, blocking the fluid but the process disassemble the meter and inspect it for condition.
  • Page 38 Reduce flowrate and adjust process fluid temperature from the pipeline. and pressure until vaporization ceases. flowmeter body. Oval rotors are revolving in Referring to Sec. 9.3 "Flowmeter Body Disassembly", 31 to contact with the measuring disassemble and inspect for condition.
  • Page 39 B-529-3N-E SYMPTOM POSSIBLE CAUSE CHECKOUT AND COUNTERMEASURE Ref. page 15. "BATT" alarm A low battery alarm. (The The meter is out of service until the battery is replaced. blinks and battery is generally no longer Referring to Sec. 10.2 "Battery Pack Replacement", "ALM"...

  • Page 40: Exploded Views And Parts List

    B-529-3N-E 12. EXPLODED VIEWS AND PARTS LIST ● When you order replacement parts, specify the stock No., flowmeter model, instruction manual No., symbol No., part name and the quantity desired. 12.1 Meter Body Exploded View and Parts List ◇EXPLODED VIEW◇ NOTE: See next page for parts list.
  • Page 41 B-529-3N-E ◇Parts List◇ Symbol No. Part Name Q’ty Remarks Symbol No. Part Name Q’ty Remarks Meter Body Sensor Assembly 1 set (151 through 160) Front Cover Sensor Bracket Rear Cover Sensor Retainer ▲ 05 O-ring Blind Plug Plug O-ring B Cover Fitting Bolt M12 ×...

  • Page 42: Register Exploded View And Parts List

    B-529-3N-E 12.2 Register Exploded View and Parts List ● When you order replacement parts, specify the stock No., flowmeter model, instruction manual No., symbol No., part name and the quantity desired. ◇EXPLODED VIEW◇ ◇Parts List◇ Symbol No. Part Name Q’ty Remarks 400 B LW76E Register Assembly 1 set...

  • Page 43: General Specifications

    B-529-3N-E 13. GENERAL SPECIFICATIONS ●Register Assembly DESCRIPTION ITEM LW76E Air two-step open, two-step close Type of control (One-step open mode available by setting the initial value at 0.) 0.20 to 0.69MPa (depends on the shutoff valve rating.) Signal air pressure (Air must be clean and dry.) Air signal line connection Rc 1/8 with a bite-type fitting for φ6 ×...

  • Page 44: Outline Dimensions

    B-529-3N-E 14. OUTLINE DIMENSIONS Unit: mm 380 （ 440） 668.5 （ 716.5） 192.5 298 （ 321） 178 （ 203） 10.5 38.5 20 20 NOTE: Figures in brackets ( ) show ● Approx. Mass of Meter Body dimensions of Size 81 meter. Meter Size FC body SCPH2 body...

  • Page 45: Product Code Explanation

    Z Special 3 T3 4 T4 ⑯ Regulations 0 Standard T Fire Service Act ※ w/Material test certificate F w/Material test certificate ※ w/Material test certificate Z Special ※1: See General Specification Sheet No. GBC201 for detail. ※2: Consult with OVAL.
  • Page 46 B-529-3N-E Ex-proof temp. class Regulations Register Explosion-proof Power supply Process connection Major material Output Version Temp. category Fluid category Bearing Nominal diameter Viscosity category Capacity (Nominal Diameter) Seal material Model Special ① ② ③ ④ ⑤ ⑥ − ⑧ ⑨ ⑩...
  • Page 47 B-529-3N-E...
  • Page 48 B-529-3N-E...
  • Page 49 B-529-3N-E...
  • Page 50 B-529-3N-E 2017.09 Revised△ All specifications are subject to change without notice for improvement. B-529-3N-E (1)

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