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MIE to MIC conversion - instrinsically safe

MIE to MIC conversion - instrinsically safe

MIE to MIC conversion - instrinsically safe

(OP)
I have a circuit that can generate a 0.13mJ spark, well below the minimum ignition energy (MIE) of methane (0.28mJ).  

I want to see if this circuit is intrinsically safe for a Class 1 Div 1 Group D environment with a minimum ignition current ratio (MIC) spec of 0.8.  

What to I need to convert between MIE and MIC?  

Thanks,

John D
 

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