How to obtain PPM readings while using MQ-7 sensor

How can i be able to obtain accurate ppm readings from MQ-7 sensor because currently am getting analog values

Hi, See Gas Sensor Info HERE

See curves in the datasheet.

http://forum.arduino.cc/index.php?topic=208258.15

thanks

terryking228: Hi, See Gas Sensor Info HERE

See curves in the datasheet.

thanks

Hi,

UPDATE URL:

https://arduinoinfo.mywikis.net/wiki/Air-Environmental-Monitoring [Needs lots of fixing: Sorry!]

Download here https://arduinoinfo.mywikis.net/w/images/2/2c/MQ-7.pdf