Hi my name is syahida. may i know the accurate concentration of lpg gas?? is it 250 ppm consider as dangerous gas in household?

hi my name is syahida. may i know the accurate concentration of lpg gas?? is it 250 ppm consider as dangerous gas in household? can you guide me to do the project of lpg gas detector system...

24 January 2021 9,570 4 View