Michael Lusby Posted May 7, 2008 Report Share Posted May 7, 2008 Hey guys, Just as the title says, I have an autometer 5249 thermocouple pyrometer; maximum output voltage at 930C is about 37mV. Does the ADC of the LinkPlusG3 have suficient resolution to provide decent accuracy at such small input voltages? and can I simply calibrate it from 0.00V to 0.04V by extrapolating the expected temperature at 0.04V? Or do I need to design an amplifier circuit to increase the output by a factor of 100, increasing the output at 930C to say 3.7V? Cheers Mike Quote Link to comment Share on other sites More sharing options...
Michael Lusby Posted May 7, 2008 Author Report Share Posted May 7, 2008 Actually it appears I have answered my own question, there is 10-bit adc resolution between 0 and 5V, so 1024 levels, this gives me a quantisation difference of 4.882mV, so i would technically have 7 different possible readings. The output from the sensor needs to be amplified then. Mike Quote Link to comment Share on other sites More sharing options...
Simon Posted May 7, 2008 Report Share Posted May 7, 2008 Yep sure does Quote Link to comment Share on other sites More sharing options...
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