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I hadn't noticed the log scale, just the line. I see now that it is logarithmic.
Also I was confused between the graph showing hundreds of mV and the table showing 30-50mV.
I have sort of worked out a solution for the design now. The problem was the simulator on my iPad was wrong. I've modelled...
The sensor is supplied with 6VDC for a heating element.
The CO2 reaction causes a differential of between 0-50mV on another set of terminals.
This must be fed through a buffer amp with at least 100G input impedance.
The thing is, the 0-30mV range is meaningless. Only 30-50mV is useful data.
So I...
Yes that will get my signal up to power, but I'm not sure the best way to trim out the 0-30mV range as it is wasted signal resolution.
I need to get a 30-50mV signal moved to 0-20mV.
I have been given a project for which I must use an ADC and other things. The ADC accepts 0-3VDC.
I have decided a co2 sensor will supply my analog signal. It needs 6v for a heating element and it supplies a signal of the range 30-50mV depending on c02 level. This must go through a buffer amp...
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