water temperature sensor

Hi, check this out:

Be sure to read the "spec sheet" (datasheet) also.

-- "The knowledge is worth 10x more than the solution." MCJ 200401

You could always encase one in ordinary two-part epoxy (if you can live with the thermal lag). As long as you don't exceed the max temp of the device, you shouldn't have any problem. IMO, two part epoxy is a godsend, it's right up there with WD-40 and duct tape.

Hello,

i want to build a water temperature sensor. I have seen some nice thermometers in maxim site but i don't know if they can't stand the shock of submerging them into distilled water or coolant fluid for cars??? Any other ideas for underwater temperature sensors???

Easiest solution I can think of is "off the shelf". Go to an auto parts store and get a temp sending unit for something simple like a '80 Chevy 305. One terminal to ground resistance. Using iced to boiling water figure your resistances and plot from there. You can use a piece of PVC drilled and tapped then spliced into a heater or radiator hose to put it into the flow.

VW, as in 80's Rabbits used a two stage temp switch that powered the radiator fan. It would handle a good load without external relays.

-ScottL

kostas wrote:

This might be of interest.