Hi guys,
I have been set a project to measure air temperature (range -25 to 40) and log data to pc and don't really know where to start. I am a complete novice at this and any help on where to start would be greatly appreciated.

 

What resources do you have to use? Try this as a sensor - www.national.com/ds/LM/LM35.pdf

 

Hello,

In the links of this page you will find a lot of info:
http://www.educypedia.be/electronics/sensorstemp.htm

Greetings,
Bertus

 

I can use any sensors i see fit. After much research I have ruled out thermocouples and thermistors mainly due to non-linear outputs. I have narrowed my choice down to either pt100 or lm35 as sensor. Also, I have been looking into usb data aquisition systems and pic controllers to process data. I think I can rule out using daq due to cost unless there is one available in college. Basically I am looking for info on what components are needed and how i would go about starting my circuit

 

Hello,

In the links of this page you will find a lot of info:
http://www.educypedia.be/electronics/sensorstemp.htm

Greetings,
Bertus

Cheers for the link, lots of very useful info to get me started. I will continue researching and will post again in next couple of days when I have more definite questions to ask.

Thanks for your time guys.

 

You can look at how they built this one for a sample. Schematics are there on their site. http://www.sparkfun.com/commerce/product_info.php?products_id=9418