NF X20-531

<p>This International Standard describes the principles of, and general requirements for, two gravimetric methods for</p> <p>the determination of the potential hydrocarbon liquid content of natural gas, or similar gas, at a given pressure and</p> <p>temperature. Two methods are specified in this International Standard to determine the amount of condensate in a</p> <p>sample gas:</p> <p>_ Method A: a manual weighing method;</p> <p>_ Method B: an indirect automatic weighing method based on the indication of the pressure difference caused by</p> <p>the accumulation of condensate in a vertical tube.</p> <p>The manual weighing method is a reference method for the indirect automatic method (Method B). The indirect</p> <p>automatic method (Method B) is suitable for semi-continuous control.</p> <p>NOTE Unless otherwise specified, gas volumes are in cubic metres at 273,15 K and 101,325 kPa.</p>