eplanet Posted January 12, 2011 Report Posted January 12, 2011 Hello friends my expert friends I hope you have good day . in some months ago i made a project for sensing ambient temperature with PIC micro controller and sensor was DS1820 and show at 2*16 character LCD.you can see scheme in this attachments.but i now looking for high precise temperature sensor that can sense in thousandth degree in centigrade.can you introduce me a high precise temperature sensor?? or you think i should use DS1820 but change program?thanks Quote
cachehiker Posted January 13, 2011 Report Posted January 13, 2011 A generic platinum RTD with get you a 100th of the way there for about $100.There are also precision thermistors that are about as accurate for about the same price.A metrology grade platinum RTD will get you a 10th of the way there for about $600.I assume you already have signal conditioning hardware that's every bit as accurate?Your pockets must be deeper than mine. I'd stop at $50 and 0.25 Quote
KMoffett Posted January 13, 2011 Report Posted January 13, 2011 Not only would the sensors be expensive, but the electronics with enough resolution "and" stability will be incredibly pricey. :(Ken Quote
Hero999 Posted January 13, 2011 Report Posted January 13, 2011 You'll also need to use a much more accurate ADC which will require the software to be modified.I suggest you look at the schematic, read and understand the code. You probably need to start from scratch but some parts can probably be reused. Quote
KMoffett Posted January 13, 2011 Report Posted January 13, 2011 And even if you can assemble a circuit with a resolution of 0.001 Quote
eplanet Posted January 18, 2011 Author Report Posted January 18, 2011 i need to fined new strong sensor. Quote
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