Re: How can I derived a voltage diagram from an ampere diagram(gas sensor)?
I could find no information in the data sheet I located about how to bias the device. It's a very poor data sheet.
You may have to contact the manufacturer for more info.
In general you can use a transimpedance opamp connection to convert a current to a voltage.
Re: How can I derived a voltage diagram from an ampere diagram(gas sensor)?
As KlausST said, there's a suggested sensor circuit in the datasheet. Winsen ME3-O3 is a classical 3-electrode sensor and needs a potentiostat circuit (see https://en.wikipedia.org/wiki/Potentiostat) with zero reference voltage.
Current to voltage conversion is achieved according to a conversion resistor (combination of R3, R5 and RT1 in the transimpedance part of the circuit).
I have voltages as an output from the circuit used the suggested circuit from datasheet, but now I want to convert the diagram to a diagram voltages/ppm from ampere/ppm so I find out how many ppm the sensor is sensing. I am new to this so sorry for any "strange" questions.
You simply need to use Ohm´s law (The most basic formula for electronics): V = I x R
FvM said: Current to voltage conversion is achieved according to a conversion resistor (combination of R3, R5 and RT1 in the transimpedance part of the circuit).