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Old 10-16-2013, 08:14 PM   #1
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Converting analog gauges to NEMA 2000

I doubt I'm ready to give up my analog gauges yet, but I do have some frustrations with a sticky tach and bouncing oil pressure gauge. I'm glad to see this device come along to double the monitoring of critical systems. Finally, I'll be able to read engine and tranny data on my new electronics suite. The system also includes hook-ups to "know" that analog gauges are working in tandem. Here's the link:

Panbo: The Marine Electronics Hub: Actisense EMU-1, analog engine gauges to NMEA 2000 happiness
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Old 10-16-2013, 08:49 PM   #2
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Man that is good stuff!!!!! I would have to read that over and over before it fully sunk in. But it sunk in enough to get me thinking!!!! One of the neat things about Cummins engines is that it comes already "tapped" for secondary monitoring like boost and exhaust gas temps....Man this would be cool!!!
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Old 10-16-2013, 09:39 PM   #3
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One of the neat things about Cummins engines is that it comes already "tapped" for secondary monitoring like boost and exhaust gas temps....Man this would be cool!!!
I installed boost on both of my engines. Gauges were relatively cheap and the install was easy. Haven't really determined if I really need them, but more gauges looks cool.
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Old 10-17-2013, 07:25 AM   #4
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I doubt I'm ready to give up my analog gauges yet, but I do have some frustrations with a sticky tach ...

FWIW, Aetna Engineering sells a digital tach, aid to be accurate to within 1 RPM. Connects to existing sensor, same basic facia/bezel size as normal tachs.

No affiliation.

-Chris
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Old 10-17-2013, 07:40 AM   #5
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FWIW, Aetna Engineering sells a digital tach, aid to be accurate to within 1 RPM. Connects to existing sensor, same basic facia/bezel size as normal tachs.

No affiliation.

-Chris
Hey, that's a nice tip. Looking into that. Thanks.
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Old 10-17-2013, 08:39 AM   #6
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+1 for the Aetna yachts! I changed our upper station tachs to the Aenta units for exactly the same reason. No more bouncing tachs.....

Found them on eBay: $140 for the pair.
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Old 10-17-2013, 09:30 AM   #7
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Found them on eBay: $140 for the pair.
Very good price! That's about half of what I've seen them selling for - for just one. I'd jump if I saw them for that, too.

Good discussion, my tachs are way off, and I want to re-vamp my upper helm display anyway. I've pretty much settled on going with a NMEA interface, but if they were cheap enough I'd leave dedicated tachs. Unfortunately I'd need four of them, and if my chartplotter will show the data, I can't really justify the cost.
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Old 10-17-2013, 11:22 AM   #8
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I installed boost on both of my engines. Gauges were relatively cheap and the install was easy. Haven't really determined if I really need them, but more gauges looks cool.
It's the pilot in you!!! Heck, I was just looking at all of the stuff in the Garmin 740 and all of the "gauges" are there.....
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Old 10-17-2013, 11:46 AM   #9
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It's the pilot in you!!! Heck, I was just looking at all of the stuff in the Garmin 740 and all of the "gauges" are there.....
You instrument Flyboys don't forget to look out the window occasionally!
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Old 10-17-2013, 12:08 PM   #10
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Very good price! That's about half of what I've seen them selling for - for just one. I'd jump if I saw them for that, too.

Good discussion, my tachs are way off, and I want to re-vamp my upper helm display anyway. I've pretty much settled on going with a NMEA interface, but if they were cheap enough I'd leave dedicated tachs. Unfortunately I'd need four of them, and if my chartplotter will show the data, I can't really justify the cost.
I find them from time to time- I'll let you know if I run across another deal.
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Old 10-17-2013, 12:15 PM   #11
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Look at the Noland Engineering RS-11. I installed one on a Perkins and now have oil pressure, temperature, and voltage at the upper helm on a LMF 400 gauge as well as monitoring by my two Lowrance MFDs. It taps into gauges at the helm making the install relatively simple with the total under $300.

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Old 10-17-2013, 12:18 PM   #12
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Look at the Noland Engineering RS-11. I installed one on a Perkins and now have oil pressure, temperature, and voltage at the upper helm on a LMF 400 gauge as well as monitoring by my two Lowrance MFDs. It taps into gauges at the helm making the install relatively simple with the total under $300.

Tom
The RS-11 had a bunch of glitches in previous versions- do you know if they been corrected, and does the unit now play nice in the NMEA 2K environment?
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Old 10-17-2013, 12:25 PM   #13
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The RS-11 had a bunch of glitches in previous versions- do you know if they been corrected, and does the unit now play nice in the NMEA 2K environment?
If read the comments in the link that the HH posted you will get an idea of the glitches....
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Old 10-17-2013, 05:43 PM   #14
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My .02 as a non large boat owner, 28 years in temperature control.

Most industrial sensors are current sensing devices because in a series circuit, ie 2 wires the current is always the same no matter how long the wire is.

A voltage sensor is very, very dependent on a stable and precise voltage.
This means voltage regulation, wire size and length are critical for ANY form of accuracy.

Better yet are sensors that encode their measured value into some form of word, that is transmitted on a bus and decoded at the head end.
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Old 10-17-2013, 10:05 PM   #15
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Does anyone know of non-standard size tachometers? I put in Maretron NMEA2000 backbone, with the EM100 adapters to send my engine instrumentation to the my nav laptop. The NMEA2000 tachometer readings are very accurate. I would now like to remove the analog tachs and perhaps install smaller units for a backup.
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Old 10-17-2013, 10:14 PM   #16
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Peter,

Operationally I haven't encountered any problems other than occasionally to restart it to get data flowing first thing in the morning. I think that problem is USB related since I keep it connected to the computer all the time through a USB hub. When the computer goes to sleep, the USB port stops responding and the RS11 stops sending data. I restart it from the computer with a couple of mouse clicks. I did not interface the tachometer since I didn't need it.

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Old 10-17-2013, 10:28 PM   #17
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Does anyone know of non-standard size tachometers? I put in Maretron NMEA2000 backbone, with the EM100 adapters to send my engine instrumentation to the my nav laptop. The NMEA2000 tachometer readings are very accurate. I would now like to remove the analog tachs and perhaps install smaller units for a backup.
Henry: Do you mean smaller analog back up or additional NMEA powered units?
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Old 10-17-2013, 11:45 PM   #18
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Looks very interesting. How expensive is it?
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Old 10-18-2013, 10:03 PM   #19
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What I am looking for is smaller analog or perhaps digital tachometers...ideally 2" diameter.
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Old 10-22-2013, 11:40 PM   #20
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What I am looking for is smaller analog or perhaps digital tachometers...ideally 2" diameter.
These are 3 inch...

Aetna Engineering Digital Tachometers

Just google digital tachometer and you get all kinds of stuff. That was just my first hit.
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