fLo-DRRrn f{nfoR lnfiRtlf,Tlon InfTnu0lonfThe frame is mounted by drilling two holes in the wall of the manholeabove the flow, installing two concrete anchors and attaching andaligning the frame. The objective is to level the frame assembly overthe center of the flow for optimum location. The sensor is then lockedinto the frame and connected to a remotelv located monitor.

wHf,T qou n{{D To (fi 'TRFT{DBefore going into the field check that all parts are present (see figure).

Also, determine what tools are needed for the complete installation. Itis suggested that the frame and mounting hardware be assembledbefore arriving at the installation site. Loosening the clamps will thenallow a normal installation once in the manhole.

Part Number Quantitv Description

1 Sensor Installation Kit consisting of:

Flo-Tractor

Laser Aliqnment Tool

80001 1 701 I I Frame Assembly - Consisting of:

Sensor Mount Frame

WallMount Frame

WallMount Bracket

Spacer Bar - 2"

Space Bar - 12"

Clamps

1 7a" Hex-Head Bolt

3/8 Flat Washer

318 x 2 7+" Wedge Anchor

3/8-15 Hex Nut

93047 2 . 3/8 Flat Washer

920003701 2 . 3/8 x 2 114" Anchor Wedoe

93007 2 . 3/8-15 Hex Nut

TOOL R{qUrP{DThe fbl lowing tocl ls wil l ensure a smooth instal lat ion. The hammerdrill will be used to drill into the concrete (or brick). The flashlightand mirror will be used to obscrye upsl.rcam or downstreamobstructions. The tape mcasure will be used as an alternate means ofnrcasuri n g ( Flo-Trircto;::,::::f ,

I/4" concrete bit

3/8" concrcte bit

o 7116" Socket / wrench

o 9/16" Sockct / wrench

o 318" Drive Ratchet or greater

o Hitmmer

o Marker

o Flashlight

o Mirror

o Tape measltre

o Screwdrivers

o Straighredge

N''{MBUNG il{ WRLI MOUNT GRMP1 Assemble two clamp halves over wall mount using four 7a-20

bolts (see figure).

2 Insert two bolts in diagonally opposite, non-threaded corners.

3 Hand tighten bolts uniformly until they are finger-tight.

4 Position clamp to just under top bracket.

5 Insert and hand tighten the remaining two bolts.

6 With a 7/l6" socket, t ighten bolts uniformly just enough tokeep clamp in place.

Nff{MBUNG il{ fRRIM GRMP

pp

Determine the front end of the frame (see figure). The frontend has a knurled area for better gripping action of the clamp.

Assemble clamp halves over front end of frame using four%-20bolts.

Insert two bolts in diagonally opposite, non-threaded corners.

Hand tighten bolts until they are finger-tight.

Insert the2Il4" spacer in frame clamp. The 12" spacer isprovided for a spare 2 ll4" section and a 7 3/4" spacer forpipe lips greater than 5 112".

Insert and hand tighten the remaining two bolts.

With a 7/16" socket, tighten frame clamp bolts uniformly justenough to keep it in place.

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7

IYH{R{ TO IntTRLt TH{ f{nfoR

UPSTREAM

Dctcrmining the iclcal position tbr the sensor frame by inspecting theupstream and downstream f-low characteristics is crucial fbr properinstal lat ion. Usc thc l lashlight and miror i f neccssary. Flow shouldbc l'roe of any standing waves, pools, undesirable materials, andforcign objects that might clisrupt thc flow contour.

lPipe midpointI

Locating the sensor above areas of low turbulence will result in thel-righest ilccuracy. In general, the best choice for an installation site is amanhole just downstream from a long, straight channel or pipe. It isalso important to locate the sensor so that it is accessible for ease ofinstallation and maintcnancc.

For a typical mounting the upper stud is located 10-3/4" above theinside wall of the pipe. The lower concrete stud should not be locatedany closcr then 2.5" from the inside wall of the pipe. This ensures thatthe sensor is above the flow under normal f'ull flow conditions. Thisposition is tbr a pipe configuration that is either flush with the wall orhas a l imited posit ive l ip.

Upstream and downstream flow disruptions may be checked using amirror and flashlight. It is desirable to locate the sensor on theupstream wall but it will operate as well on the downstream wall.

After cletermining the general wall location, proceed with marking andsecuring the franre assernbly as described in the following procedures.

Maxrmum 10-3i4" above l ipTop drill point

Minimum 2.5" above l ip

LO(frT{ TK INfTRLMNON POIITTf

/.-.- Smaller Dla.Plpe,1 Recceed fom wall.

NegitveUp.

This procedure is for a pipe that is flush with the wall or thathas a positive lip of 11" or less. Keep in mind that the mount isvery versatile and understanding its capabilities will makeinstallation smoother.

Using the Flo-Tractor ensure the hook is centered over theflow in the middle of the pipe.

Extend the ruled edge of the Flo-Tractor (in a "T" shape)until the tip just touches the wall.

Tighten the Flo-Tractor when the angle is 90o.

Mark the wall indicated by the Flo-Tractor tip. This will bethe top hole. The optimum distance from the pipe lip is 10-3/4". Note the lip dimension, it may be needed later.

This procedure is for smaller diameter pipes recessed fromthe wall.

Measure up from the wall edge of the recess I0 3/q" and markthe wall for your top-hole position.

Once the frame has been mounted to the wall, proper verticalposition can be attained through the use of the LaserAlignment Tool or the Flo-Tractor.

10 314'fromwalledge ofrccss.

InrTRrunG TH{ t{nfoR lnoufiI

&,ir\

Exploded view of all parts needed for standard mounting frame installation

I

9

10

Remove the top bracket in order to slide the bottombracket onto the wall mount.

Position the other bracket at the bottom of the wallmount.

Reposition the top bracket on the anchor and slide thebottom bracket until a suitable drilling surface is found.

Assemble the anchor with the washer and nut and inscrtinto hole wedge end flrst. Mark the wall through thebracket slot and removc the wall mount and bracketsout of your way.

Drill and clean the second hole usine the l/4" and 3/8"dri l l bits.

Assemble the anchor. Insert the anchor, wedge endfirst.

Reposition the top and bottom brackets onto theanchors.

NOTELoosen top bracket as needed to insert thewall mount into the bracket.

Slide the washer onto the threaded portion flush to thebrackets.

Position, then tighten the nuts using the 9/16" socket.

Tishten both nuts.

flnnt r{ntoR moufir Rrf{mBrq

Clamp Lowered 2"

, , F l tB*- Laser beam'pH5bes just below insideedge of pipe. An object can be placedin front of the beam to show its

ffoRrnc T[{ lnol|nflnc ilf,RDtYRR{ (BoTTOm HOr{)1

2

3

4

5

6

7

1 Install frame assembly into wall mount clamp.

2 Ensure the spacer is fully inserted into the wall mountclamp.

3 Ensure that the wall mount clamp is positioned just underthe top bracket.

4 Tighten all clamp bolts just enough to stabitize frameposit ion.

v{RTr(Rr RDfUfTm{fiI O{ TH{ {RRm{The purpose of this adjustment is to ensure the optimumlocation for velocity measurement.

2

3

Ensure clamp bolts are just loose enough to move theframe, but tight enough to hold the frame steady oncepositioned.

Using the Flo-Tractor, measure the length of the pipelip.

Determine how far the wall mount clamp must belowered usins the chart.

4 Using the Flo-Tractor, measure down from theunderside of the top wall mount bracket.

Lower the wall mount clamp until the top of clampaligns with the measurement.

Tighten clamp bolts.

Ensure bolts are tight enough to hold the frame steady.

You can verify the velocity beam location using theFlo-Tractor and/or the Laser Alisnment Tool.

5

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floRrzoffier RDfufrm{nT of TH{ fRRrrKThe purpose of this adjustment is to center the level sensor over theflow. This adjustment also effects the velocity position.

1 Assemble the alignment tool with the laser pointer inthe level sensor hole.

Position the alignment tool in the frame.

Loosen frame mount clamp bolts just enough to enabletapping the frame into position.

Position the tape measure just inside the pipe midpointhorizontally across the flow.

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4

Using the 2114" Spacer

lf Lip is Move Clamp Down

0.0' 0.0"0.0-.7" 0.5'.8"-1.4" 1.0"

1.5"-2.1" 1.5"

2.2"-2.8" 2.O',2.9"-3.5" 2.5"3.6',-4.2', 3.0'4.3"-4.9" 3.5'5."-5.6' 4.0'

Using the 8" Spacer

lf Lip is Move Clamp Down

5.7" 0.0"5.8'-6.4' , 0.5'6.5'-7.1" 1.0"7.2"-7.8" 1.5 '

7.9"-8.5" 2.0"8.6"-9.2" 2.5"9.3"-9.9" 3.0'

10.0"-10.6" 3.5"10.7"-11.3" 4.0"

Level Position

If the laser beam does not align on the ccntermcasurcment, tap frame side to side on the front end ofthc ll'arnc (horizontal).

lf the fiame asscmbly still cannot be ccntcrcd, tap therear end of the Irame (yaw).

When the bubble is ccntcred and the beam is centcred.tishtcn all bolts.

fl{mnf nf nG RD,urTm$fis o+ TH{ {RRm{1 Vcrify both critical positions and adjust as necessary.

2 Once framc is in dcsired location and lcvcl, cnsure allnuts and bolts lre socurely t iglrtened using the ratc:hctand socket.

ffrT{RnffT{ RDf UfTm{nT O{ TH{ {RRm{Use Lhis method when the laser al isnmrent tool isn'tavailable.

1 Chcck bubble lcvcl altcr cach liamer-novement.

2 Loosen frame and wall mount clarnp bolts justenough to tap the frame into final position.

Horizontal Adjustment

'l Configure Flo-Tractor in the level position andplace it in the ccnter o1'the f rame.

2 Determine the center point of the flow using thetape measure.

3 Adjust framc as neccssary to center frame ontape measure using the Flo-Tractor as a pointer.

Vertical Adjustment

1 Configure Flo-Tractor in velocity position andplace it in center of the frame.

Using the angled portion of the Flo-Tractor forline of sight or a guide for additional straightedge, position frame so that angled arm of Flo-Tractor is sl ightly below inside diameter of pipe.

It may be necessary to rcposition the framehorizontally by tapping the fiont end of thelrame.

Flo-Tractor in Level Position

Flo-Tractor in velocity position.

Check that the vertical clamp has not moved.

Check that the horizontal placement is stillcentered.

When the bubble is centered and the beam isaligned with the flow, tighten all bolts.

M{fl'UBING il{ PIP{ INflD{ DIRM{T{RThis calculation is also critical. This will enable the sensorto determine the height above the bottom of the pipe (forthe level transducer) and to enter into a surcharge modewhen the flow breaches the top of the pipe.

1 Assemble the Flo-Tractor into a"Y"configuration.

2 Position the Flo-Tractor pointers inside thecenter of the pipe walls.

3 Check inside pipe diameter at three locations.

4 Re-tighten the Flo-Tractor after eachmeasurement.

5 Use the tape measure to record the outsidedistance between the Flo-Tractor tips aftereach measurement.

6 Take the average of the three measurements torepresent the inside diameter of the pipe.

7 Record the pipe inside diameter (ID)measurement.

I This measurement will be entered into themonitor site set-up under site ID.

D{Knfnrnrnc r{nfoR o#t{ISensor offset is the distance from the top of the mountingframe to the bottom of the channel.

Sensor offset needs to be entered into the monitor duringinitial set-up for a given site. It is required by the monitorin order to determine the level of the fluid in the channel.

Sensor offset can be measured directly from the top of themounting frame to the bottom of the channel.

In situations when it is not practical to measure to thebottom of the pipe, an alternative method using the

45

,22---) []--l st\ l

)\_?J\,2^. /

Offset

i^\ta

Measure from top inside ofpipe to top of frame than addpipe dimension to get sensoroffset.

Flo-Tractor is described below and shown in the adjacentfigure.

1 Assemble the Flo-Tractor into an "L"configuration.

2 Position the Flo-Tractor pointer section under thelip of the pipe in at least six inches to form a firmbase.

3 Adjust the vertical extension length of the Flo-Tractor at the base to f'ully extend beyond theframe clamp.

4 Check that both sections of the Flo-Tractor areflush at the base (zero inches). When theextension is fully upright at 90 degrees, tightenthe wing nut.

5 Slide the pointer section along the inside pipeuntil the top of the extension is approximately 3 3A

inches away from the upright.

6 Record the height measurement from the inside ofthe pipe to the top of the frame.

7 Add this measurement to the pipe diameter to getthe Sensor Offset.

InTTRLLInG Tn{ t{nfoBThe sensor may be moved from one site to another withoutentering the manhole. Only the initial frame installationrequires entering the manhole. The cable connects thesensor unit (factory installed) to the secondary unit(customer installed). Do not remove the cable at the sensorend unless required to do so. See Chapter 8, Flo-DarSystem Maintenance.

CAUTIONNever raise or lower the sensor with the cable.Always use the bale.

r{nron InrIRrLRilonThe sensor only fits into the frame one way. Properlyinstalled, the sensor handle will point away from the wall.The sensor is positioned and locked into the frame using apole with the hook attachment. The hook fits into thelocking bale of the sensor and lowered into the frame withthe cable trailing away to the center of the manhole.

1 Check cable connection to sensor. Connector iskeyed to fit only one way.

2 Ensure hook attachment is securely attached to theend of the pole.

3 Position hook into sensor locking bar.

4 Lower sensor with cable trailing away from themanhole wall onto the frame.

5 Turn pole clockwise to engage the locking barsinto the frame side mounts.

CAUTIONThe locking bars will only turn so far. Do notforce the bars beyond the stops.

Coil excess cable and secure to top rungmanhole.

CAUTIONDo not apply stress to the sensor end of thecable. Allow some slack after the coil is secured

6 of

oPTronnt InfTnltfrilonThe sensor may be reinstalled without entering themanhole. The procedure above may be used in thoseinstances. The frame must be installed by entering themanhole just once. At that time, the sensor may beinstalled to check the system alignment. In this instanceyou will not need the pole and hook attachment. Thesensor lock may be turned by hand. If the sensor isinstallcd, obscrve all cautions concerning the cabledescribed in the standard installation.