is0125 f fuel-manager

8/6/2019 IS0125 F Fuel-Manager

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CalculatesGas Engines Only(Not for use with Ethanol fuels)

Fuel Remaining In Tank

Displays Fuel Flow in GPH or LPHTotal or Trip Fuel UsedLow Fuel Alarm

FuelManagementSystem

IS0125rev. F

ECR#8287 06/2010


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Specifications - for use with gas engines only.(Not for use with Ethanol fuels)SizeMount 2 1/ 16" diameter holeDepth behind face plate 3" min.

Display 3-character LCDBacklightingRed colored diffused lighting for display.

Water IntegrityFront will withstand direct water spray.

AlarmAudio and visual alarm indicatesremaining fuel total has dropped belowa preset alarm value.

Flow0.5 to 34 US gallons per hour2 to 129 liters per hour0.4 to 28 imperial gallons per hourThe instrument may show erratic

readings or indicate 0 flow below .5 gph.LogsLogs record fuel used up to 999 displayunits.Both Trip Log and Total Log are savedin memory at power down. Both TripLog and Total Log can be reset.

Fuel RemainingUser enters a fuel value into memory.The quantity of fuel used is

automatically subtracted from the total.This value remains in memory at powerdown.

Operating Voltage8 VDC to 16.5 VDC

Operating Temperature0C to 50C (32F to 122F)

Current Drain90 mA max. with supplied transducer.

Compliance/Certifications


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IMPORTANTAlways install the Fuel Flow Transducer AFTER the primary filter. The primary filter must bea good quality water separator type with a minimum filtration of 30 microns or better. (10 or 2micron. The lower the micron rating the finer the filtration) Failure to provide this level offiltration protection will result in inaccurate readings or total failure or damage to the transducer.If there is not a suitable length of hose after the primary filter, an in-line filter (30 micron or

better) should be fitted before the Fuel Flow transducer. Damage due to insufficient filtrationis not covered by warranty. If in doubt please consult your local Marine dealer for adviceprior to installation.

Installation

Location

On a flat surfaceAt least 12" from a compassAt least 20" from any radioEasy to read by the helmsman andcrewProtection from physical damageAccessible to electrical cableconnections.

MountingThe instrument panel may be up to3/ 4" in thickness.

Drill a 2 hole in the instrumentpanel.

1

/ 16"

Remove brackets and insert theinstrument so the back is flush withthe instrument panel.Slide the back clamp over theinstrument and tighten mountingnuts until secure.

Instrument Panel

2 1/ 16" Hole

Instrument

Mounting Bracket

Mounting Hardware

Always wire your Fuel Management Gauge into your boats ignition so that whenthe engine is turned on, the gauge is recording the fuel used. If an accessoryswitch is used and you forget to turn the unit on then the gauge will not haverecorded the fuel used and will be inaccurate. If you are unsure how to do this,contact a qualified marine electrician.

The Fuel Management Gauge isdesigned for above or below deckinstallation. Select a position that is:


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Wiring ConnectionKeep electrical and transducer cablesaway from alternator or other noisegenerating electrical cables. Avoidconnecting the instrument to power

circuits that share loads with ignition,alternators, inverters and radiotransmitters. Electrical power supplyconnections should always be as shortas possible.

Connect the red wire from the gauge tothe positive supply through a 1 amp fuseor a 1 amp circuit breaker. Connect thegreen wire from the gauge to the

electrical ground.

Connect the fuel flow transducer to thegauge as follows:

GAUGEWhite - Fuel Flow SignalBlack - Fuel Flow DC Output PositiveShield - Fuel Flow DC Common

FLOW TRANSDUCERWhiteBlack (Input)Shield w/ Black shrink tubing

BUZZER

DC output to Fuel transducervoltage positive (Black)

Fueltransducerflow signal

(White)

DC Input voltage ground (Green)

DC Input voltage positive (Red)

FuelTransducerDC

Common

Fuel Flow Gauge Signal (White) Fuel Flow Gauge DCinput positive (Black)

Fuel Flow Gauge Common ShieldBlack Heat shrink tubing on shield

Installation of the fuel flow transducerThe fuel flow transducer is designed forinstallation in Coast Guard approved 3/ 8"flexible fuel line. The transducer MUST beinstalled AFTER the main fuel filter. It shouldbe located well away from any area where itwill be effected by excessive heat or vibrationfrom the engine. It is preferable to mount thetransducer in a vertical position.

Drain all the fuel from the flexible fuel line. Cutthe fuel line and using the fuel hose attachingclips provided install the transducer so that theFUEL IN side of the transducer connects tothe fuel tank.


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Instrument SetupSelecting units of measureThe Fuel Management fuel flow meter willindicate fuel values in US gallons, Litersand Imperial gallons. To change the currentsetting perform the following steps.1 Power up the unit while holding down

the key.

Hold down during power up 2 When the unit is on, release the key.

The display will indicate the currentdisplay unit with:

3 To select the display unit desired, usethe and keys to change the value.

4 To exit this mode, press and hold boththe and keys simultaneously forone second.

Press and hold to exit

Information will now be indicated in theselected display unit.

CalibrationThe fuel transducer supplied with thefuel flow meter will provide readings atbetter than 5% accuracy. Individualcalibration will increase this level ofaccuracy to better than 2% over a fuelflow range of 2 to 32 US gallons perhour.

1 Reset the total log value to zero (seepage 9).

2 Use a known amount of fuel. The largerthe amount the more accurate thecalibration will be.

3 Take note of the actual volume of fuelused and the fuel used indicated by thetotal log. If these two totals are differentthe instrument may require calibration.

4 Press and hold the key while

applying power.

Hold down during power up

5 Release the key. The display willflash current total log value.

6 Use the or keys to make thedisplay indicate the actual volume offuel used.

7 Press both keys simultaneously 2seconds to exit.

Press and hold to 2 second

The fuel flow meter is now calibrated.

TOTAL

Imperial Gallons

US Gallons

Liters

FLOW TOTAL

FLOW

FLOW TOTAL

Use the followin g steps to calibrat e yourfuel flow meter:

While a properly calibrated unit shouldprovide accuracy within the published limits,the user should also have a level sender orfuel level gauge installed in the boat. This isnecessary due to possible operator inducederrors such as forgetting to reset the fuelused when filling the tank, or other operatorcontrolled actions that may render thedevice inaccurate.Use the following stepsto calibrate your fuel flow meter:


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How to en ter the flo w ave ra gin gmenu:1. Press and hold the key while

applying power.

2. Press and hold both keys andsimultaneously for 2 seconds to

enter Flow Filter mode.3. Fuel Flow average period menu

AVG is displayed briefly and thedefault value of 10 seconds isdisplayed if you have not previouslychanged it.

4. Use the and keys to

select a new value between 1 and99 seconds.

5. Press and hold both keys andsimultaneously for 1 second to savethe new averaging period and returnto Normal mode.

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FLOW TOTAL

Press and hold for 2 seconds

AVG (which shows as AUG) will thenbe displayed. To skip this function andreturn to normal mode, press and holdboth keys simultaneously for another 2seconds.

Flow AveragingThi s fun ctio n sets the per iod over which the fuel flow is averaged. The

period can be set in the range of 1 to99 seconds. Normally engines do notdraw fuel from the tank at a constantrate. Instead, they draw fuel at a highrate a short time until the carburetor bowl or injection reservoir is full, andthen draw no fuel for a few seconds. If the true flow rate were displayed, itwould be too erratic to read.

Usually a value of 10-15 seconds willgive satisfactory results for two strokenaturally carbu retor engines. Four stroke engines that use electronic fuelinjection may require longer periods. If the readi ng see ms err ati c you canincrease the period.

A large number means the fuel flowdisplay will have a slow response timebut more accurate average readings,and a short period means the displaywill have a quick response time anderr atic dis pla y rea din gs. The flowperiod setting only affects the fuel flow

display. It does not affect the fuel usedor fuel remaini ng meas ureme nt interms of accuracy.


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Fuel FlowPress the key to display the currentfuel flow rate

Fuel Remaining FunctionsPress the key to cycle through thepossible functions. Each time thekey is pressed the display will showan identifier for 2 seconds before thevalue is displayed.

FLOW

TOTAL

TOTAL

TOTAL

TOTAL

Fuel used on trip

Fuel remaining in tank

Low fuel alarm setting

Fuel used in total

Changing the fuel remainingvalueTo change the value of fuel remainingin thetank press the key until the

display indicates for two secondsand then displays the current value.

Press and hold both keys for threeseconds and the displayed value willbegin to flash.

Use the and keys to change thevalue. Press and hold both keys forone second tosave this new value tomemory and to exit this function.The display will indicate and thenthe new value.

Operation

TOTAL

FLOW TOTAL



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I f the fue l rem ain in g val ue dro psbelow the fuel alarm value, the alarmwil l sound and the alarm arrow willflash.

Press any key to mute the alarm. Thealarm arrow will continue to flash aslong as the alarm condition remains.

Rese tt ing the TRIP LOG orthe TOTAL LOGTo reset a log , press the key unt ilthe display indicates the name of thelog to be reset.

Press and hold both keys for threeseconds. The display will show or

for 2 seconds before resetting tozero.

Note: The trip log value may be resetwithout changing the total log value. ifthe total log is reset to zero, then thetrip log will automatically reset to zero.

Note: If the tot al log exc eed s 999the n bot h it and the tr ip log wil l bereset to zero.

Use the key to sel ect the al armfunction. The LCD will indicate fortwo seconds and will then display thepresent alarm value. If no alarm valuehas been entered the LCD will indicate

.

Pre ss and hol d both key s for thre eseconds and the displayed value willbegin to flash.

Use the and keys to select thedesired alarm value. Press and holdboth keys for one second to save thisnew value to memory and to exit thisfunction. The display will indicateand then the new value.

The arrow pointing at the alarm bellwill be activated.

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Setting the low fuel alarm

.

Alarm activation

TOTAL

FLOW TOTAL



FLOW TOTAL


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Copyright 2005 by the Thomas G. Faria Corporation, Uncasville CTFaria is the trademark of the Thomas G. Faria Corporation. All rightsreserved.No part of this publication may by reproduced in any form,in an electronic retrieval system or otherwise, without the prior writtenpermission of the company.

is0125 f fuel-manager

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