About the point or pointlessness of fitting exhaust gas temperature sensors

[jrudge]

LOL, why, it ain't THAT complicated...!
It's actually interesting instead, many thanks (also to Hardmy!) for the very clear example.
I
Btw, how come that the grey insulation in your pic is turned brownish?
That's an effect which I usually noticed on the dry section of the exhaust, in some boats.

When I bought it it had a leak causing rust. It was removed and welded up. So they are rust marks.

 

[MapisM]

Thanks folks, interesting stuff indeed.
That's possibly the first safety-related thing I come across which is missing on the DP, which generally speaking used to build boats with an almost obsessive approach to safety - also for historical/personal reasons.
Jrudge/jfm, do you possibly know if the OEM stuff used by FL used is the same as posted by Hardmy, or is it something different?

 

[jfm]

Thanks folks, interesting stuff indeed.
That's possibly the first safety-related thing I come across which is missing on the DP, which generally speaking used to build boats with an almost obsessive approach to safety - also for historical/personal reasons.
Jrudge/jfm, do you possibly know if the OEM stuff used by FL used is the same as posted by Hardmy, or is it something different?

the fairline OEM stuff is Halyard so not same as hardmy's, but v similar. http://halyard.eu.com/pleasurecraft/productdetails.php?product=24 Fairline don't use the helm display and only have the alarms ( out of sight) plus a connection to one of the warning lights in the dash panel . Halyard also do raw water flow sensors but not afaik in the size needed for larger engines.

 

[MapisM]

Thanks J.
Halyard has a sound reputation for exhaust systems, and I'd be tempted to prefer it, if I should decide to fit something like that.
Otoh, having a temp display rather than just an alarm makes good sense...
Oh, well. Another topic for the "things to consider" list!

 

[MapisM]

Halyard also do raw water flow sensors but not afaik in the size needed for larger engines.

PS: just seen your edit. Actually, I'm not so sure that water flow/pressure sensors are that much relevant, assuming to have a wet EGT sensor/alarm.
Pretty sure, seawater must have done all its job if it reaches the wet exhaust section.
And if it doesn't, wet EGT is bound to skyrocket in real time, I suppose. Or am I missing something?

 

[Andrew M]

This has made me think again that EGT sensors would be a good addition to our VP lumps, previously I was considering this Silicon Marine kit, any views on if this is still as good as any other or if it's been superceded by another manufacturer ?

http://www.siliconmarine.com/sm007d.html

Thanks.