What is the pre-heat time parameter in LPG gas sensor?

[ravruch]

In a datasheethttp://www.sparkfun.com/datasheets/S...etric/MQ-6.pdf
there is one spcification PRE-HEAT TIME=48hr
how does it matter while designing detector
can anybody plz tell....how can we get constant output across RL

 

[chuckey]

Re: abot lpg gas sensor

I think the pre-heat time is just the time the device must be heated (used) before its characteristics stabilize within the spec. It does not mean that you can't use it before that time, its just it will not be accurate.
Get your 5V supply , connect up as per the design note, set your Rl to 10 -> 47K, amplify this voltage.
Frank