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Garmin NMEA 2000 Network and LMF400 (to see economy)

Old 03-23-2017, 07:27 AM
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Default Garmin NMEA 2000 Network and LMF400 (to see economy)

Hello I have a Garmin NMEA 2000 Network with a GFS10 fuel sensor on it and need to monitor distance/fuel to optimize consumption.
On the Garmin display i can see only fuel/time.
I am thinking to install Lowrance LMF400 which can display distance/fuel to observe fuel economy.
Will the LMF400 be able to read and successfully display what I need?

Thanks
Old 03-23-2017, 07:41 AM
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Originally Posted by koutroul View Post
On the Garmin display i can see only fuel/time.
what Garmin model?

if it can show fuel flow rate from the GFS-10, it should be able to show "economy"

unless it is a display without an integral or attached GPS

you need a speed source to calculate economy....
Old 03-23-2017, 07:50 AM
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Originally Posted by Fwpratt View Post
what Garmin model?

if it can show fuel flow rate from the GFS-10, it should be able to show "economy"

unless it is a display without an integral or attached GPS

you need a speed source to calculate economy....
I believe this is correct as well. As long as you have a GPS signal your Garmin unit should be able to calculate economy. I am curious as well to what model Garmin you have as this could be a potential factor in what you are looking to do. You should be able to go into the menu options and change the data fields to show MPG, GPH, etc. A lot of units will also calculate trip logs and give you a total gallons used per trip. A unit model would be helpful though to determine capabilities of your unit.
Old 03-23-2017, 08:09 AM
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Originally Posted by koutroul View Post
Hello I have a Garmin NMEA 2000 Network with a GFS10 fuel sensor on it and need to monitor distance/fuel to optimize consumption.
On the Garmin display i can see only fuel/time.
I am thinking to install Lowrance LMF400 which can display distance/fuel to observe fuel economy.
Will the LMF400 be able to read and successfully display what I need?

Thanks
I have a Garmin 741xs (has N2k capability) also have a GFS 10 connected via N2K, however my Yamaha is a 2005 and pre N2K capable.

What i get on my screen is a count down of fuel remaining. In order to get other fuel info I'd have to have it hooked up to an engine that is N2k capable. FYI lots of threads on this topic.
Old 03-23-2017, 08:46 AM
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Originally Posted by Catn TJ View Post
I have a Garmin 741xs (has N2k capability) also have a GFS 10 connected via N2K, however my Yamaha is a 2005 and pre N2K capable.

What i get on my screen is a count down of fuel remaining. In order to get other fuel info I'd have to have it hooked up to an engine that is N2k capable.
I don't understand.
If plumbed into your fuel line, the GFS-10 is measuring rate of fuel consumption (one-way flow into the engine)

That's the same info the ECM would report via N2K.

From fuel flow, the MFD calculates economy, can decrement fuel on board, and can calculate cruising range.
Old 03-23-2017, 09:46 AM
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Originally Posted by Fwpratt View Post
I don't understand.
If plumbed into your fuel line, the GFS-10 is measuring rate of fuel consumption (one-way flow into the engine)

That's the same info the ECM would report via N2K.

From fuel flow, the MFD calculates economy, can decrement fuel on board, and can calculate cruising range.
I'm not sure either. I think we've had similar discussions re;Yamaha 225 and N2K. As a point of reference I have the model 225 TXRD built in 11/05 that has a Y2K harness but apparently not the N2K compatible ECM. When I plugged in the lowance cable I got momentary engine gauge info then it disappeared - I believe you had the same issue until you upgraded the ECM. So with the cable unplugged the only fuel info I get is fuel gals. remaining.

If I could get actually fuel flow in addition I'd be thrilled. Any clue as to how I could get it?
Old 03-23-2017, 10:49 AM
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Yes, I had the same problem with the 2005 ECM.

So because I couldn't use that, I installed a GFS-10.
That's where I'm confused:
Originally Posted by Catn TJ View Post
I have a Garmin 741xs (has N2k capability) also have a GFS 10 connected via N2K,
With the GFS-10 installed in your fuel line and connected via N2K - you will have gals/hour.

With gals/hour your MFD also gives you mpg, "fuel remaining" and "cruising range".

Here's shots when I was running a GFS-10 with a 740s:



Old 03-23-2017, 12:19 PM
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Originally Posted by Chris@BOEmarine View Post
I believe this is correct as well. As long as you have a GPS signal your Garmin unit should be able to calculate economy. I am curious as well to what model Garmin you have as this could be a potential factor in what you are looking to do. You should be able to go into the menu options and change the data fields to show MPG, GPH, etc. A lot of units will also calculate trip logs and give you a total gallons used per trip. A unit model would be helpful though to determine capabilities of your unit.
the model is 5212 so I will try to upgrade the firmware of it to see if the economy gauge will be available then.
Old 03-23-2017, 12:33 PM
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You probably have it already; you'll have to add it to the visible display.

Originally Posted by koutroul View Post
the model is 5212 so I will try to upgrade the firmware of it to see if the economy gauge will be available then.
Old 03-23-2017, 12:54 PM
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Originally Posted by Fwpratt View Post
Yes, I had the same problem with the 2005 ECM.

So because I couldn't use that, I installed a GFS-10.
That's where I'm confused:


With the GFS-10 installed in your fuel line and connected via N2K - you will have gals/hour.

With gals/hour your MFD also gives you mpg, "fuel remaining" and "cruising range".

Here's shots when I was running a GFS-10 with a 740s:



Well damm - I never knew that!! Mr. Pratt - thanks for the info ( I may be getting back to you later with a configuration question)

Thx again!!
Old 03-23-2017, 04:29 PM
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Originally Posted by koutroul View Post
the model is 5212 so I will try to upgrade the firmware of it to see if the economy gauge will be available then.
Originally Posted by Joe View Post
You probably have it already; you'll have to add it to the visible display.
yes, likely you just have some menu selections and setup to do, ~ p. 47:


http://static.garmin.com/pumac/GPSMA...ries_OM_EN.pdf

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