Requirements:
*0-250F Temperature *25PSIG Pressure *Possible flammable gas *Must be in probe form *0-5V or 1-5V output *+-1.0 degree C accuracyIdeally, I would like to go with a LM34 semiconductor or equivilent temperature device in a probe configuration. I like the 0-5V linear output, cost, and simplicity.
I can't find any semiconductor temperature probes available, though. Does any one know of any products like this available? Would it be feasable to make one? Where would I be able to find a probe enclosure?
The device it will connect to in the field only has a 0-5V input and 12V supply. The temperature range can be adjusted in software, but the hardware cannot be changed.