Calibrating MQ-3 Alcohol Gas Sensor

[nicholasles]

Hi guys, i've hooked up a mq-3 gas sensor with a carrier attached to a small adjustable resistor on it, and got it running. However, when it comes the calibrating the data, several unknowns are detected. For example the values of the resistor on the gas sensor carrier. My question is does anyone came across to know the values of the adjustable resistor on the gas sensor? I cant seems to find it anywhere on the net, even from the manufacturer. And how much current does the 5V on the arduino board supply? Ur help is much appreciated