Hi guys,

Would you like to inform us how to calculated water dewpoint in line gas transmission, we know that the boundary limit for water content approx.7 - 10 lb/mmscf (may vary several country) to avoid internal corrosion or hydrate formation. For your information that we usually use manual chandler chamber (chilling process) to define tdew >> use the graph with refers some pressure, we can find water content. But my question is which pressure we will choose? The line gas pressure or the pressure @ chandler chamber. Please help me within several reason.

many thanks