pool temperature measurements

[psincebaugh]

I am looking for a low cost solution to measure and acquire (Windows XP)my pool and hot tub temperatures, any suggestions would be greatly appreciated.

[Henrik_Volkers]

How about a temperature to frequency converter and use the Printerport or the stereo sound input to read two channels?

just as starting points:

http://www.maxim-ic.com/quick_view2.cfm/qv_pk/2025/ln/en

http://www.elecdesign.com/Articles/ArticleID/4563/4563.html

and

http://www.analog.com/library/analogDialogue/archives/30-1/digital.html

[Ken_S]

Hello,

Good answer, Henrik! That is definitely a possible solution.

Another solution may be to use a low-cost National Instruments DAQ board to acquire a signal from a temperature sensor (like a thermistor or RTD). A PCI DAQ board such as the PCI-6013 may prove to be a good solution for you. A link to the product page for this board is below:

PCI-6013

I hope this helps!

Ken S.
Applications Engineering
National Instruments