These little things are amazing - but for my use they need to sample the water temp in a radiator. I could use standard sensors - but they are like £12 each and won't be as easy to interface properly (reading the resistance, no idea what it should be at what temp etc)
So - how could you possibly put one of these tiny packages in-to the rad?
The rad currently has two M22 threads in it for a fan switch. I have a couple of M22 bungs that could be modified - but obviously it's not quite that straight forward. I imagined I could drill in to the bungs, solder wires to each of the legs - then insert with copious amounts of epoxy?
Have a look at the link below which may help you with waterproofing the sensor. Not the same sensor, but one thats very similar so the same principle should work.
It does need to be made in such a way that its not sealed inside the radiator for ever, so if by any chance it does get wet and corrodes, it can be replaced without too much difficulty.
Cant you just strap the sensor in contact with the radiator?
I realise there could be some time lag with the temp of the fluid heating the metal skin of the radiator and then heating the sensor.
But wont you also be insulating the sensor by wrapping it up to make it waterproof?
A strip of aluminium 2"x 1" and 1/8th"thick with another piece 1/4"x 1"folded round the plastic sensor with two screws through , just simply adhered with sikaflex or good quality black silicon glue to a clean side of the radiator worked for me.
I guess I am looking to make it a little more rugged then.
Good idea about no need to actually insert as it's just metal anyway...
At the moment - I am thinking of it being a piece of round copper bar with a hole drilled in to it. Wires soldered to the legs - then pushed in to the copper and then filled up with an epoxy or sealant - something that will stand the temp.
