Onicon D-1401 Installation And Operation Manual Download Page 14

D-1401 & D-1402 Portable Metering System Installation and Operation Guide • 03-17

 

14

 

 
 

3.4 

REM OVAL OF THE M ETER 

 
 
 

CAUTI ON 

Remember, the meter may be under high pressure, and while removal of the meter is basically the 
reverse of the insertion procedure detailed above, care must be taken to ensure that the meter is 
supported against the pipe pressure before the position clamping nut is loosened. Failure to do this 
will allow the pressure to suddenly and rapidly force the meter from the pipe causing serious injury. 
 
 
 
 

CAUTI ON 

Prior to removal of the meter, make sure that you are standing on a secure platform and have both hands 
available to manipulate the flow meter.

 

 
 
 
 
First support the flow meter against the pipe 
pressure by holding the electronics enclosure firmly 
in hand BEFORE loosening the position clamping 
nut. 

The effort which will be required is the same as 

that required for insertion of the meter and should be 
calculated according to the formula in the prior section 
covering insertion of the meter. This effort will be 0.11 
times the pipe pressure. 

If your footing is not secure, 

or if your ability to hold the meter limited for any 
reason, DO NOT loosen the clamping nut. 

 

SLOWLY

 loosen the position clamping nut and 

carefully and 

slowly

 allow the pressure to force the meter out of the pipe. 

This is not at all difficult, but you must not let go of the meter until it is fully withdrawn into the 
hot tap adapter. After the meter is completely withdrawn, you may close the isolation ball valve. 

 

The main cause of damage to meters comes from accidentally closing the valve on the turbine 
assembly. To avoid this, gently rotate the meter by twisting the electronics enclosure back and 
forth (twist the stem, do not bend it) while you slowly close the valve. If the valve touches any 
part of the meter, you will feel it as you are twisting the meter. If the valve touches anything, it 
means the meter is not fully withdrawn. Usually a gentle twisting motion while withdrawing the 
meter will clear any obstruction and permit the meter to withdraw completely. (Excessive build-
up on the stem may require the hot tap ‘ O’  ring to be lubricated with silicone.) 
After the valve is completely closed, you can safely unscrew the hot tap adapter from the valve. 
Partially unscrew the adapter and allow pressure to vent from the hot tap adapter. There will be 
very little water in the hot tap adapter; however, a small bucket or pan should be held under the 
valve to catch any spilled water. 

Summary of Contents for D-1401

Page 1: ...Model D 1401 D 1402 PortableMeteringSystem Installation and Operation Guide 03 17 11451 Belcher Road South Largo FL 33773 Tel 1 727 447 6140 Fax 1 727 442 5699 www onicon com E mail sales onicon com ...

Page 2: ...ismanual Servicerequirements Thisproduct containsalimited number of user serviceableparts Only qualified personnel should install or servicethisproduct Pleasedo not hesitateto contact ONICON for assistancein theunlikely event that this product requiresservice IMPORTANT NOTE Messagesidentified as Important Note contain information critical to theproper operation of themeter CAUTION Messagesidentifi...

Page 3: ...0 SYSTEM OPERATION AND SET UP 6 2 1 System Operation 6 2 2 Initial System Set up 6 2 3 Basic Flow Measurement 7 2 4 Flow Profiling Measurement 7 2 5 System Storageand MaintenanceRecommendations 8 2 6 Flow Meter Information 9 3 0 INSTALLATION REMOVAL AND ADJUSTMENT 10 3 1 SiteSelection 10 3 2 Mechanical Installation 11 3 3 Insertion of theMeter 13 3 4 Removal of theMeter 14 CONDITIONSOF SALE 16 ...

Page 4: ...402 PortableMetering System includesaF 1200 dual turbineflow meter and can beused to measure2 5 inch and larger pipesizes Theflow meter portion of thesystem istypically inserted into afilled and pressurized pipeviaan existing oneinch minimum diameter full port ball valve For pipesthat can beeasily drained beforeand after measurement theflow meter can beinserted into aoneinch minimum diameter outle...

Page 5: ...display Carrying case Owner smanual Laminated conversion chart Serialized for thespecific F 1100 flow meter TheD 1402 PortableMetering System containsthefollowing components Model F 1200 Insertion TurbineFlow Meter Model D 1402 battery powered hand held display Carrying case Owner smanual Laminated conversion chart Serialized for thespecific F 1200 flow meter ...

Page 6: ...theselection switcheson theDisplay Module Thisfrequency output isthen converted to gallonsper minute for thepipesizebeing measured viathelaminated conversion chart included with thesystem Pleasecontact Onicon to obtain conversion factorsfor any pipesizesnot listed on thechart or if you requirea flow rate unit of measureother than gallonsor liters 2 2 INTIAL SYSTEM SET UP 1 Insert theflow meter int...

Page 7: ...asurementsat incremental insertion depths Depending on thepipesizeto bemeasured determinean appropriate measurement increment that will providetherequired information For example when measuring theflow profileof an 8 inch pipe measurements may bemadeat 1 inch incrementsto providethedesired profile With theflow meter properly inserted in thepipe loosen thehot tap adaptor lock nut and push themeter ...

Page 8: ...easethespeed of rotation of oneof theturbinesand will havetheoppositeeffect on theother turbine 2 5 SYSTEM STORAGE AND MAINTENANCE RECOMMENDATION 1 Alwaysstorethesystem in itscarrying casewhen not in use 2 Beforelong term storageof thesystem blow all excesswater from theflow meter turbineassembly and wipetheflow meter stem assembly dry with a clean cloth Donot put any lubricantson theturbineassemb...

Page 9: ...9 ONICON sD 1401 D 1402 Insertion TurbineFlow Meter measuresthe velocity of flowing liquidsby counting thefrequency at which thebladesof a rotating turbinepassafixed electrode Circuitry within theflow meter electronicsenclosurethen convertsthe rotational rateto afrequency output ...

Page 10: ...heating coolingand fluid meteringfieldsshould attempt toinstall adjust or remove theflow meter Refer totheinstallation drawingsbeforeperformingany work on thesemeters 3 1 SITE SELECTION Theclearancerequired for installation istypically 30 36 from thepipewall to thenearest obstruction abovethevalveassembly Thisclearancedimension will increasewith large diameter pipes Theenvironment should befreeof ...

Page 11: ... Hot Tap feature it must beinstalled through an isolation valve Thelocation must allow sufficient overhead clearancefor meter removal IMPORTANT A full 1 opening isrequired to clear theturbineassembly Makesurethat your valvesand fittingsarefull port and at least 1 in actual internal diameter Also notethat an oversized accessholecan causeundesirableturbulence ...

Page 12: ...evalve without shutting down or draining thepipe SeeAppendix A for List of AvailableOnicon Installation HardwareKitsfor other typesof pipe materialsand applications After fitting thenecessary plumbing hardware flush theentiresystem so that it isfreeof flux solder and slag Prepareto install theflow meter by loosening theclamping nut and withdrawing theturbineassembly fully into thehot tap adapter N...

Page 13: ...largeamountsof water Thehand effort required tohold the meter will be0 11 timesthepipepressure Begin by calculating theeffort that will berequired to hold themeter Establish adequatefooting for thistask taking extracaution when working from aladder or platform Usethefollowing formula E 0 11 x P Where E effort in pounds P system pressurein poundsper squareinch Example In a300 PSI system 33 poundsof...

Page 14: ...eter limited for any reason DO NOT loosen the clamping nut SLOWLY loosen theposition clamping nut and carefully and slowly allow thepressureto forcethemeter out of thepipe Thisisnot at all difficult but you must not let go of themeter until it isfully withdrawn into the hot tap adapter After themeter iscompletely withdrawn you may closetheisolation ball valve Themain causeof damageto meterscomesfr...

Page 15: ...402 Portable Metering System Installation and Operation Guide 03 17 15 CAUTION In hot water systems even a small amount of water can causeseriouspersonal injury Useextra caution when workingwith hot water meters ...

Page 16: ... of theproductsunder thiscontract will beadded to thepurchaseprice Buyer agreesto reimburseONICON for such tax or chargeor provideONICON with an acceptableexemption certificate Payment of invoiceswill bedue30 daysfrom thedateof shipment of theproductscontained therein In theevent that payment of an invoiceisnot received by theinvoiceduedate ONICON will assessalatefeenot to exceed 1 5 per month or ...

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