user25591: In my project Arduino provides value range between 0-1024. I need to convert this serial value to a standard µSiemens value to measure emotional stress.
Can anybody point me to an answer that would give an appropriate equation for the conversion?

user313: A Siemens (aka a Mho) is a unit of conductance, the inverse of resistance.
You have a measure of the voltage (A/D value) between the pads so you can find voltage. You'll also need to know the current between the pads.
Convert your A/D reading into voltage and use that and the current to find resistance (using Ohm's law), and the reciprocal of the resistance is in Siemens. 1 Siemens == 1,000,000 uSiemens.
https://en.wikipedia.org/wiki/Siemens_(unit)

25591: <p>In my project Arduino provides value range between 0-1024. I need to convert this serial value to a standard µSiemens value to measure emotional stress.</p>

<p>Can anybody point me to an answer that would give an appropriate equation for the conversion?</p>
 313: <p>A Siemens (aka a Mho) is a unit of conductance, the inverse of resistance.</p>

<p>You have a measure of the voltage (A/D value) between the pads so you can find voltage. You'll also need to know the current between the pads.
Convert your A/D reading into voltage and use that and the current to find resistance (using Ohm's law), and the reciprocal of the resistance is in Siemens. 1 Siemens == 1,000,000 uSiemens.</p>

<p><a href="https://en.wikipedia.org/wiki/Siemens_(unit)" rel="nofollow">https://en.wikipedia.org/wiki/Siemens_(unit)</a></p>
