Raw water flow and temperature monitoring

[captstu]

Hi, Thank you again to each of you who offered advice after my 4BY2's raw water impeller failed or the inlet temporarily clogged causing an overheat of the exhaust system before the engine coolant temperature sounded an alarm and I shut down the engine.

This happens occasionally on every boat - some of the time, the engine coolant safety acts in time and occasionally, as in y case, there is a partial meltdown of the exhaust before the engine protection system detects and alarms the problem. Fortunately, only easily replaceable parts were damaged.

The problem led me to scan this board to see what others have done to detect the problem before damage occurs.

This led me to research, the interface unit, made by Maretron as a EMS100, to see what must be done to include raw water temperature and flow in those parameters that are monitored.

Turns out, I'm i'm not the only one who was aware of this problem. These two signals are among the STANDARD parameters that are monitored on that device. Only the sensors are missing from our installation. The two sensors add less than $100 to the monitoring system - the display and buzzer are already included in the Garmin and Yanmar display devices installed by Ranger on my boat.

I am in correspondence with Maretron to see what must be done after market to enable these two signals and what wires I must connect. The Aqualarm sensors are electrically identically to those used by Maretron, so it should be only a matter of attaching two ground and two signal wires and I will be much less likely to have an engine problem if my sea water cooling is interrupted.

Has anyone done this?

Has anyone requested this as an option from Ranger on a new boat?

Since it is easy and inexpensive for Ranger to provide this on all boats with this type of sensor, any idea why it isn't standard?

Thanks for any input.

 

[SGIDAVE]

This led me to research, the interface unit, made by Maretron as a EMS100, to see what must be done to include raw water temperature and flow in those parameters that are monitored.

T
Has anyone done this?

Has anyone requested this as an option from Ranger on a new boat?

Since it is easy and inexpensive for Ranger to provide this on all boats with this type of sensor, any idea why it isn't standard?

Thanks for any input.

Hello Stu,

I have a Yanmar YM series diesel in my 21EC. I researched the Maretron EMS100 before finding the Aqualarm monitors. Everyplace that "had" the EMS100 showed it as "discontinued." Have you found it available somewhere?

Or, are you saying it was already installed on your 2007 Ranger?

dave

 

[captstu]

I believe the EMS 100 is what was re-branded and installed by Yanmar as a Yanmar part when the engine was built. Looks the same, acts the same, has the same pinout and performs the same overall function.

The manufacturer of EMS 100 claims it is installed as a Yanmar part on many Yanmar engines from the Yanmar factory.

I think it is the same part. /Stu

 

[Lobo]

Stu:

Check the threads on "Aqualarm" and their website. For a couple hundred bucks you can get a water flow alarm and an exhaust alarm. The water alarm has proven to me to be virtually instant, which keeps me from finding out if the exhaust alarm works as well.

Totally separate from the engine computers and "lazy" alarms.

Dave
LOBO

 

[captstu]

Dave, I purchased an Aqualarm, and am looking to avoid wires and use the existing system if I can figure it out. Tnx

 

[knotflying]

On my Yanmar unit several of the leads not being used are identified for a particular use. If yours is like mine there may be a lead that is similar that you can connect to and give you the alarm function. I am not near the boat now to take a look.

 

[captstu]

I see the leads, some are labeled. - but I don't know how to tell the interface to start looking at the leads. None I can see are labeled RAW WATER. Still looking. . .

 

[knotflying]

My assumption is it may not sat raw water, but perhaps another indicator that may be used for your raw water. The box with all the leads should be on the port side near the Fuel filter.