eddystone
Well-Known Member
Has anyone fitted one of these - does it work?
NASA marine EX1 exhaust temperature alarm
- Thread starter eddystone
- Start date
PTB
Well-Known Member
I've had one on last 2 boats. My surveyor said it is the most important marine engine instrument as loss of sea water coolant is/can be catastrophic. So, for the money, why not?
eddystone
Well-Known Member
Why not indeed - will get one
HughClayton
Active Member
They’re great! Easy to fit and they just work!
wiggy
Well-Known Member
I’ve got one, very easy to install and does what is says on the tin.
forelle541
Well-Known Member
I have a NASA one and one by these people www.siliconmarine.com in another boat both work the same but the display on the Siliconemarine one is waterproof and just over half the price.
MonniotC
Well-Known Member
I have an exhaust temperature alarm I installed over 10 years ago. Trouble is it simply sets off an alarm. There is no visual display, so it's impossible to know if it is working. I have just ordered one of the siliconmarine ones.
Jamie Dundee
Well-Known Member
+1 for Silicone Marine. I fitted one of these last winter, brilliant bit of kit. SM010
superheat6k
Well-Known Member
From personal experience not only exhaust elbow temperature, but also water flow. Had I known at the time my seawater inlet was plugged I would have saved my Stbd engine last Summer.
These also work just fine, plus you can connect a very loud siren to the NO - Com contacts.
My engines are now smothered with temperature, flow and pressure sensors, all coupled to a very very loud alarm if something goes awry.
IMHO it is a shame that the Insurance companies do not encourage fitting such devices e.g. 5% off for an exhaust alarm, and another 5% off for a flow alarm.
12V/24VDC 220VAC STC-1000 Digital Temperature Controller Thermostat w/NTC | eBay
These also work just fine, plus you can connect a very loud siren to the NO - Com contacts.
My engines are now smothered with temperature, flow and pressure sensors, all coupled to a very very loud alarm if something goes awry.
IMHO it is a shame that the Insurance companies do not encourage fitting such devices e.g. 5% off for an exhaust alarm, and another 5% off for a flow alarm.
12V/24VDC 220VAC STC-1000 Digital Temperature Controller Thermostat w/NTC | eBay
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Plum
Well-Known Member
That is what I fitted 6 years ago. The wire between the sensor and the readout can be extended. Excellent. Recommended.
Www.solocoastalsailing.co.uk
Lucy52
Well-Known Member
Superheatok and Plum, Please, where and how did you fix the sender to the exhaust, inside or outside the pipe?
alahol2
Well-Known Member
Ditto...
My sensor is fitted to the exhaust elbow, after the injection point, close to where the rubber exhaust hose joins it, with a hose clip.
Certainly gives some peace of mind.
Minchsailor
Well-Known Member
Fitted one a few seasons ago; nice bit of kit.
Bristolfashion
Well-Known Member
That's interesting, which silicon marine alarm do you have?
Plum
Well-Known Member
You can just see the sensor held against the injection bend by the top hoseclip so no holes made on the exhaust. The wire is protected by a heatproof sleeve.
Www.solocoastalsailing.co.uk
Lucy52
Well-Known Member
Thank you,
I see you only need the temperature of the elbow, that is easy enough to fix.
Presumably you can set the alarm temperature to suit.
The thermostat opens at 100° C, but the engine runs hotter than that.
What would be an right temperature to set for the exhaust alarm?
Travelling Westerly
Well-Known Member
The Silicon versions look good but it looks like you have to drill a hole through the exhaust hose! Is this the case or have I read it wrong?
Not sure how that captive o ring will seal up the hose afterwards?
Not sure how that captive o ring will seal up the hose afterwards?
Jamie Dundee
Well-Known Member
Travelling Westerly
Well-Known Member
Thats a great help Jamie, thanks. In regards to location where did you fit it and did you use any silicone as suggested by Silicon?
Thanks
Plum
Well-Known Member
Don't worry about the actual temperature. Just fit it, go out, warm up the engine then give it a blast at close to max revs for as long as it takes to get a stable temperature reading, then set the alarm temperature 10 degrees higher.
Www.solocoastalsailing.co.uk
