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Oval Ultra Oval LW76E, Instructions Manual

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Oval Ultra Oval LW76E Instructions Manual Download Page 31

B-320-2-E

3

(7)  Pull  the  internal  assembly  a  little  forward  and 

remove connectors CN1, CN2-1 (SV), and CN2-2 
(MV) at the bottom of the battery pack.

 CAUTION:  With LW74E register, 

CN2-2 (MV) is unused. At 

reassembly, be careful 

not to make a mistake in 

connections.

 CAUTION:  Do not pull the sensor 

bracket forcibly, or its 

lead wires may break.

 Now the internal assembly is ready for 

removal.

INTERNAL ASSEMBLY

BATTERY PACK

(8)  Remove  the  two  posts  securing  the  hold-down 

strip with socket wrench.

 

Then  remove  three  couplings  at  air  connections 
and silencer from their bushings.

 CAUTION:  Do not take a firm grip of 

the silencer overmuch or 

it will be crushed.

HEXAGONAL POSTS

COUPLING
BUSHING

SOLENOID 

VALVE UNIT

HOLD DOWN STRIP

(9)  Take off eight hex socket head bolts (M4) holding 

the retainer, using hex wrench key.

 CAUTION:  At installation, tighten bolts 

in an alternating order to 

ensure even tightening.

RETAINER

(10) Draw the solenoid valve unit out of the register  

  body.

Now the solenoid valve is ready to be removed. 

SOLENOID VALVE ASSEMBLIES

LW76E REGISTER SERVICE

(11) Loosen  sensor  retainer  fitting  screws  (M4)  with 

screwdriver,  remove  the  sensor  retainer  and 
draw out the sensor unit.

 The sensor unit is now ready to be removed.

SENSOR 

RETAINER

SENSOR

CONNECTOR

SENSOR 

RETAINER

FITTING 

SCREW

(12) Insert a new sensor unit into the opening through 

which  the  old  sensor  was  removed.  Assembly 
is  simply  the  reverse  of  the  removal  procedure. 
Upon  completion  of  assembly,  perform  an 
operation check before service operation.

158 152

SENSOR ASSEMBLY

Location of Holes for Installing the Sensor

SENSOR FITTING 

DISC

SENSOR OPENING

FOR SINGLE-CASE

METER

SENSOR OPENING

FOR DOUBLE-CASE

METER

  

(13) At register installation on the body, ensure that 

the flow direction arrow on the body agrees with 
the arrow mark on the sensor bracket.

FLOW DIRECION ARROW

Summary of Contents for Ultra Oval LW76E

Page 1: ...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 Sizes 28 29 31 and 60 Double Case Construction Size 29 Single Case Construction Sizes 60 and 31 Single Case Construction Meter Sizes 28...

Page 2: ...umatic Circuit 14 6 ABOUT DISPLAY AND PUSHBUTTONS 16 6 1 Display Functions 16 6 2 Pushbutton Inspection and Cleaning 17 6 3 Pushbutton Functions 18 6 4 Switch Functions 19 6 4 1 Selecting Add and Subtract Counter 19 6 4 2 Selecting Setup and RUN Mode 19 7 RECONFIGURATION 20 7 1 Establishing a Batch Setpoint 20 7 1 1 Procedure batch setup mode 20 7 1 2 Example of Establishing a Batch Setpoint 21 7 ...

Page 3: ...er 10K type Exploded View 46 12 4 2 Sizes 28 29 and 31 Double Case Construction Meter 10K Type Parts List 47 12 5 Size 60 Double Case Construction Meter 10K type Exploded View and Parts List 48 12 5 1 Size 60 Double Case Construction Meter 10K type Exploded View 48 12 5 2 Size 60 Double Case Construction Meter 10K Type Parts List 49 12 6 Sizes 28 29 and 31 Double Case Construction Meter 30K type F...

Page 4: ...ly configured and adjusted Do not remove its front cover to gain access to its internal assembly except for reconfiguration 1 3 Storage Considerations If your Ultra OVAL is stored for long periods of time upon receipt before installation unexpected faulty conditions could result If a long term storage is anticipated take the following precautions 1 Keep the Ultra OVAL in store in the same shipping...

Page 5: ...is incorporated in the flowmeter register Large quantities of drain may cause malfunctioning of the solenoid valve and other pneumatic equipment used besides environmental pollution Careful considerations must therefore be made in handling of drain In case such handling is difficult good practice is to provide an auto drain equipped filter 5 Powder carbon produced from the compressor can build up ...

Page 6: ...noises are highly expected 3 GENERAL 3 1 General Description The Ultra OVAL is a high precision flowmeter combined with a user friendly batch controller for use in the field Its electronic register is programmable with front pushbuttons for batch processes or quantities of the process fluid to be delivered When used in combination with a pneumatic shutoff valve you can build an automatic metering ...

Page 7: ...ary according to the operating conditions A low battery alarm BATT flickers in the front LCD when the battery is near to its end 2 Replacing the existing OVAL register LW76 with this new model does not require another air source the existing shutoff valve remains serviceable 5 Affords adequate protection in batch processes 1 In the model equipped with LW76E register the shutoff valve opens and clo...

Page 8: ...r and operation status Unit of Total Plate Front Cover Fitting Hex Soc Hd Bolt OUT1 OUT2 IN A Air Signal Connections Cooling Tube or Heating Tube Flow Direction Arrow Meter Body Flowmeter Rear Cover Register Front Cover Register Body Battery pack built in Connecting Flange EXT GND Terminal Label Ratings shown STOP Button ROT Button RESET Button Button START Button Button Nameplate Ratings shown ...

Page 9: ...point at 0 2 On detection of an overshoot overmeasurement An overshoot of measurement at the end of a batch does occur due to some time lag in shutoff valve actuation on closure An indicator ALM in the display lights when the register counts more than the anticipated overshoot count oV NOTE While 0 is chosen for anticipated overshoot count oV the overshoot detection feature remains disabled 3 On d...

Page 10: ...hoot setpoint ｏ Ｖ Ｄ Ａ Ｔ Ａ Ｅ ｒ ｒ 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 STOP ROT button is depressed in this case the display scrolls through available data so that the operator can confirm which parameter is in trouble see Figure below 2 Following acknowledgement press RESET A message DATA Err...

Page 11: ...r and other associated equipment NOTE Pressure losses of the Ultra OVAL with a batch controller and strainers are stated in the GENERAL SPECIFICATIONS 6 The flow direction arrow indicated on the meter body should point in actual direction of flow 7 The strainer should be located upstream of and in close proximity of the meter 8 Since the sensor in the Ultra OVAL detects the changes in magnetic flu...

Page 12: ...nds carefully rotate it to a desired orientation of the new flow direction and secure it with hex socket head screws CAUTION Never rotate the register assembly more than one complete revolution Do not attempt to separate the register assembly from the meter body to change the flow directions 4 3 Standard Installation Vertical Line 1 If the flow direction is from top to bottom change places of mete...

Page 13: ...ecification of the valve Fig 5 1 NOTE When combined with OVAL pneumatic electrical switch Model FPD1 the pump can be interlocked For complete details see the pneumatic electrical switch instruction manual 5 2 Air Signal Line Connections The register contains a pneumatic circuits to which air signal lines of copper tubing are connected through their ports below the register body Air pressure 0 20 t...

Page 14: ...ne the right batch setpoint corrected for this overshoot If an overshoot exceeds a predetermined quantity the register sets off an alarm Safe and precise measurement is thus achieved In practice we preselect valve positions A B and C D on the part of the shutoff valve NOTE In a model equipped with LW76E register manual interruption while the valve is fully open causes the shutoff valve to close in...

Page 15: ... final flow control SHUTOFF VALVE SIGNAL AIR SOURCE SHUTOFF VALVE AIR SOURCE SIGNAL AIR SOURCE SHUTOFF VALVE AIR SOURCE SIGNAL AIR SOURCE SIGNAL AIR SOURCE SHUTOFF VALVE AIR SOURCE SHUTOFF VALVE AIR SOURCE Fig 5 4 Metering Action Output Signal Shutoff Valve OUT1 OUT2 V1 V2 V3 Valve position Not in operation 0 0 0 0 1 Closed Metering initial flow control 0 1 1 0 1 SV open Metering fully open 1 1 1 ...

Page 16: ... b c ALM Stays on missing pulses excessive overshoot low battery alarm until reset d COUNT Comes on in response to pulses incoming to the total counter blinks in synchronism with incoming pulses e END Comes on at the end of a batch process Stays on until the batch setpoint is reset f BATT Blinks to indicate a low battery g NOTE For batch setup mode see paragraph 7 1 1 in page 20 LCD DISPLAY OPERAT...

Page 17: ...ttons into place according to their colors See pushbutton colors on the previous page Spring Pushbutton Panel Hex Socket Head Bolt M4 10 w spring washer Fig 6 5 Cleansing Spray Fig 6 6 CAUTION 1 The panel is made of resin Tighten bolts at 150cN m 2 Avoid immersion of the panel and pushbuttons in solvent such as thinner as these parts are made of resin RUN OUT ALM COUNT END X L BATT a b c d e f g B...

Page 18: ...reset and the current batch setpoint is reset RESET button white internal button RESET functions Mode of Operation Functions RUN mode batch processing Batch setpoint is displayed not operating Resets the batch setpoint count Resets the end of a batch process LCD END goes out An overshoot is detected Resets the missing flow signal pulse detection alarm LCD ALM goes out Batch setup mode Moves the di...

Page 19: ... 6 7 shows the SUB subtracting counter mode standard 6 4 2 Selecting Setup and RUN Mode SW 2 in the register internal assembly selects the SETUP mode and RUN mode Set SW1 2 to either RUN or SET Table 6 3 Switch Description SW1 2 ON SETUP mode SET 1 OFF RUN mode RUN 2 NOTE 1 Mode to change parameters and cumulative total count 2 Normally set in this mode Fig 6 7 shows RUN mode Register Internal Ass...

Page 20: ...set it before changing setpoints 2 While the register is simply adding up counts of incoming flow signal other than in a batch process then changing batch setpoints presents no problem 7 1 1 Procedure batch setup mode On seeing the LCD batch setpoint blinking in response to the operation above you can change the current setpoint by the following procedure 6 digits BATCH SETUP MODE LCD batch setpoi...

Page 21: ...s 123456 and press to end the setup procedure Similarly keep on adjusting the figure at the rightmost of the LCD with and taking the figure place up with Press the button a number of times to adjust the figure Press the button a number of times to adjust the figure If you have taken the figure place up more than necessary like １ 10 100 press button a number of times until the LCD display shows 0 a...

Page 22: ...setup label attached to the retainer inside the register NOTE The register is shipped in default settings unless otherwise specified by the customer Table 7 1 Symbol Item Setting Range Default Setting Total counter reset figure adjustment 00000000 to 99999999 F Scaler factor 0 0001 to 1 9999 Meter factor of the flowmeter or customer s specification d Frequency division 0 1 1 1 1 10 2 1 100 Default...

Page 23: ... STOP ROT STOP ROT NO YES CHG START RESET STOP ROT STOP ROT NO YES CHG START RESET STOP ROT STOP ROT NO YES CHG START RESET STOP ROT STOP ROT NO YES CHG START RESET STOP ROT STOP ROT NO YES CHG START STOP ROT STOP ROT OR OR OR OR 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 follow...

Page 24: ... pressure with the reducing valve air set Steps 3 and 4 above require daily inspection 8 2 Preoperational Checks CAUTION Ensure that without allowing the process fluid to run the shutoff valve operates positively and that no air leaks exist at air tubing connections 1 Set the quantity of a batch to any value NOTE See Section 7 on page 20 for setup procedure 2 Show the batch setpoint in the LCD dis...

Page 25: ...ere temperature exceeds 60 C run the system at least for 30 minutes in this state to ensure uniform heat distribution in the measuring chamber preheating is necessary 5 Following the break in preheating period shut off the bypass line valve C completely and open the upstream valve A progressively until fully open and slowly open the downstream valve B until the rated flow is reached 6 Flowrate sho...

Page 26: ...utdown 1 Valves should be closed progressively Rapid valve closure could under certain piping conditions cause a sharp pressure rise by water hammer or hydraulic shock resulting in damage to the meter 2 Precautions against pressure buildup on closure Complete closure of valves upstream and downstream of the meter makes the affected section a totally enclosed chamber and a pressure buildup inside d...

Page 27: ...upting a batch process Shutoff valve fully closes goes out OUT OUT OUT COUNT A B START RESET STOP ROT STOP ROT 8 7 Starting a Batch Process 8 7 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...

Page 28: ...ch process 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 Final setting other than 0 Partially closes goes out Final setting other...

Page 29: ...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 PLS A rectangular waveform after waveshaping the SIG pulse waveform Output timing remains the same as that of SIG 2 to 2 5ms 3V Pulse frequency 200Hz OUT Produces a factored pulse output with the same timing as that of the indicate...

Page 30: ...ising care not to bump the sensor unit REGISTER SCREWS 3 Take off four hex socket head bolts M8 on the front of register using hex wrench key REGISTER FRONT COVER 4 Separate the register front cover from the register body in a straight line carefully Use care not to bump the front cover against the internal assembly INTERNAL ASSEMBLY BATTERY PACK REGISTER BODY REGISTER FRONT COVER 5 Take off two s...

Page 31: ...installation tighten bolts in an alternating order to ensure even tightening RETAINER 10 Draw the solenoid valve unit out of the register body Now the solenoid valve is ready to be removed SOLENOID VALVE ASSEMBLIES LW76EREGISTERSERVICE 11 Loosen sensor retainer fitting screws M4 with screwdriver remove the sensor retainer and draw out the sensor unit The sensor unit is now ready to be removed SENS...

Page 32: ... construction meter body is shown here The same procedure applies to other size meters 3 Remove oval rotors from the measuring chamber and inspect them for condition Rotor shafts should be drawn out straight forward a Inspect the oval rotors to see if they are stuck with foreign solids b Check the rotors shafts and other components for wear c Inspect the measuring chamber and the inner wall of fro...

Page 33: ...ly until the front cover is closely in contact with the meter body PIN SLOTS PINS HEX BOLTS O RING 4 Confirming Smooth Rotation With air or water make sure to see that the rotors move freely CAUTION Rotation check should be performed at low rotor r p m Violent rotor spinning may cause a damage to the components and bearing burn CAUTION This meter is not compatible with any other registers Never at...

Page 34: ...ew holes in the major shaft holder 204 to jack the major shaft holder by tightening them alternately as shown 204 218 6 Using stop ring pliers remove stop ring 216 and remove uniform motion drive gear 214 At assembly install in line with the locating pins of uniform motion gears 216 214 1 Using hex key take off four bolts 115 Holding the register assembly in both hands carefully separate it from t...

Page 35: ...ing chamber and inner case top cover with suitable cleaning oil Reassemble them exercising care to keep grit and dust from entering At assembly align match marks as shown and make sure of smooth rotor rotation 202 214 217 209 208 CAUTION This meter is NOT Compatible with any other registers Never attempt to replace it Assembly is the reverse of the removal procedure but observe the following instr...

Page 36: ...eginning to run down an alarm BATT blinks in the display As this state advances a warning ALM comes on closing the shutoff valve automatically if a batch process is in progress shutoff valve is open and saving variables of the total count and cumulative total in the memory As a rule of thumb it takes about 8 days from BATT to begin blinking until ALM to come on Good practice is to replace the batt...

Page 37: ... to press STOP ROT button to set it A pause for next operation longer than 10 sec in the course of setting will result in returning to the previous setting automatically 20 Can set a batch setpoint but upon STOP ROT button depression the display reading return to 0 If in the ADD mode the display following a batch setting shows it for 2 sec approx and then 0 in the standby mode 20 Can not set a des...

Page 38: ... the sensor provides a flow signal output Referring to Sec 9 1 Register Inspection monitor waveshapes at test pins SIG and PLS 29 Flowrate signal frequency has exceeded its limit Inspect similar to the above and make sure that the pulse frequency at test pin PLS is held below 200Hz 29 Sensor installed the wrong way Referring to Sec 9 2 Register Disassembly inspect the sensor for correct installati...

Page 39: ...e the battery pack early 36 15 BATT alarm blinks and ALM stays on A low battery alarm The battery is generally no longer serviceable in this state The meter is out of service until the battery is replaced Referring to Sec 10 2 Battery Pack Replacement replace with a new one 36 16 Batch process fails to stop at the target setpoint Trouble lies in the internal assembly Does OUT go out and END light ...

Page 40: ...ction manual No symbol No part name and the quantity desired 12 1 Size 29 Single Case Construction Meter Exploded View and Parts List 12 1 1 Size 29 Single Case Construction Meter Exploded View NOTE See next page for parts list NOTE Flow direction from right to left viewed from the register The 1st rotor is below the other ...

Page 41: ... Meter Body 1 102 Front Cover 1 103 O Ring 1 105 Front Cover Fitting Bolt 12 M16 60 106 Rear Cover 1 107 Rear Cover Fitting Bolt 6 M8 20 108 Rear Cover Gasket 1 109 Eyebolt 2 M10 18 113 Gasket 1 115 Adapter 1 117 Adapter Fitting Bolt 4 M10 35 119 Register Fitting Bolt 4 M6 12 121 Iron Slug 1 122 Spacer 1 200 Inner Case Assembly 1 set 201 First Rotor 1 Signal magnet embedded 202 Second Rotor 1 204 ...

Page 42: ... Construction Meter Exploded View and Parts List 12 2 1 Size 60 Single Construction Meter Exploded View NOTE See next page for parts list NOTE Flow direction from right to left viewed from the register The 1st rotor is below the other ...

Page 43: ...Meter Body Assembly 1 set 101 Meter Body 1 102 Front Cover 1 103 O Ring 1 JIS P 320 105 Front Cover Fitting Bolt 12 M16 60 109 Eyebolt 2 M12 113 Gasket 1 115 Adapter 1 117 Adapter Fitting Bolt 4 M10 35 119 Register Fitting Bolt 4 M6 12 121 Iron Slug 1 122 Spacer 1 200 Inner Case Assembly 1 set 201 First Rotor 1 Signal magnet embedded 202 Second Rotor 1 204 Rotor Shaft 2 206 Thrust Ring A 1 207 Thr...

Page 44: ... Construction Meter Exploded View and Parts List 12 3 1 Size 31 Single Case Construction Meter Exploded View NOTE See next page for parts list NOTE Flow direction from right to left viewed from the register The 1st rotor is below the other ...

Page 45: ... Q ty Remarks 100 Meter Body Assembly 1 set 101 Meter Body 1 102 Front Cover 1 103 O Ring 1 JIS P 400 105 Front Cover Fitting Bolt 12 M24 75 109 Eyebolt 2 M12 113 Gasket 1 115 Adapter 1 117 Adapter Fitting Bolt 4 M10 35 119 Register Fitting Bolt 4 M6 12 121 Iron Slug 1 122 Spacer 1 200 Inner Case Assembly 1 set 201 First Rotor 1 Signal magnet embedded 202 Second Rotor 1 204 Rotor Shaft 2 206 Thrus...

Page 46: ...tion Meter 10K type Exploded View and Parts List 12 4 1 Sizes 28 29 and 31 Double Case Construction Meter 10K type Exploded View NOTE See next page for parts list NOTE Flow direction from right to left viewed from the register The 1st rotor is below the other ...

Page 47: ...er 1 1 1 204 Longer Shaft Holder 1 1 1 205 First Rotor Shaft 1 1 1 206 Second Rotor Shaft 1 1 1 207 Uniform motion Gear Boss 1 1 1 208 First Rotor 1 1 2 209 Second Rotor 1 1 210 Rotor Bearing 4 4 4 211 Thrust Ring A 1 1 1 212 Thrust Ring B 3 3 3 214 Uniform motion Drive Gear 1 1 1 215 Shaft Non turn Strip 2 2 2 216 Stop Ring 1 1 1 217 Inner Case Top Bottom Cover Fitting Bolt 12 M12 35 12 M12 35 12...

Page 48: ...tion Meter 10K type Exploded View and Parts List 12 5 1 Size 60 Double Case Construction Meter 10K type Exploded View NOTE See next page for parts list NOTE Flow direction from right to left viewed from the register The 1st rotor is below the other ...

Page 49: ...ont Cover Fitting Bolt 16 M16 65 122 Gasket 1 123 Sealing Flange 1 124 Hex Socket Head Bolt 8 M10 130 Sealing Plate 1 131 O Ring 1 132 Sealing Plate Gasket 1 200 Inner Case Assembly 1 set 201 Inner Case 1 202 End Plate 1 204 Major Axis Holder 1 205 First Rotor Shaft 1 206 Second Rotor Shaft 1 207 Uniform motion Gear Boss 1 208 Rotor 2 210 Rotor Bearing 4 211 Thrust Ring A 1 212 Thrust Ring B 3 214...

Page 50: ...n Meter 30K type F3 Exploded View and Parts List 12 6 1 Sizes 28 29 and 31 Double Case Construction Meter 30K type F3 Exploded View NOTE See next page for parts list NOTE Flow direction from right to left viewed from the register The 1st rotor is below the other ...

Page 51: ...lt 4 M6 119 Nut 16 120 Washer 16 122 Gasket 1 124 Sealing Flange 1 125 Hex Socket Head Bolt 8 M10 130 Sealing Plate 1 131 O Ring 1 132 Sealing Plate Gasket 1 200 Inner Case Assembly 1 set 201 Inner Case 1 202 Inner Case Top Cover 1 203 Inner Case Bottom Cover 1 204 Longer Shaft Holder 1 205 First Rotor Shaft 1 206 Second Rotor Shaft 1 207 Uniform motion Gear Boss 1 208 First Rotor 1 209 Second Rot...

Page 52: ...n Meter 30K type F3 Exploded View and Parts List 12 7 1 Size 60 Double Case Construction Meter 30K type F3 Exploded View NOTE See next page for parts list NOTE Flow direction from right to left viewed from the register The 1st rotor is below the other ...

Page 53: ... Fitting Bolt 4 M6 12 119 Nut 16 M20 120 Washer 16 M20 122 Gasket 1 123 Sealing Flange 1 124 Hex Socket Head Bolt 8 M10 130 Sealing Plate 1 131 O Ring 1 132 Sealing Plate Gasket 1 200 Inner Case Assembly 1 set 201 Inner Case 1 202 Inner Case Top Cover 1 204 Inner Case Bottom Cover 1 205 Longer Shaft Holder 1 206 First Rotor Shaft 1 207 Second Rotor Shaft 1 208 Uniform motion Gear Boss 2 210 First ...

Page 54: ...15 401 Register Body 1 402 Register Front Cover 1 with pushbuttons 403 Fitting Bolt Front Cover 4 M6 with washer 404 B Solenoid Valve Assembly 1 for LW76E register 405 Retainer 1 406 Hex Strut 2 M4 407 Retaining Setscrew 1 408 Hold down Strip 1 409 Battery Pack 1 410 Battery Pack Fitting Screw 5 M3 411 Solenoid Valve Fitting Bolt 8 M4 with washer 412 Internal Assembly 1 413 Faceplate 1 414 Interna...

Page 55: ...In the SET mode Initial setting oP and final setting cL Set to any point from 0 to 999 counts in the SET mode A setpoint at 0 makes the one step open one step close mode Missing pulse setting PL Set to any point from 0 to 15 sec in the SET mode A setpoint at 0 disables the missing pulse setting Overshoot setup oV Set to any point from 0 to 99 counts in the SET mode A setpoint at 0 disables the ove...

Page 56: ...ations are subject to change without notice for improvement 2013 03 Revised 2010 02 Revised B 320 3 E 2 NOTE For outline dimensions and pipeline connection dimensions see the approval drawing or specifications of the product ...

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