Carry over meter

Abstract

A separator is described as provided with a gas/liquid separator vessel, a sight glass, and a carry-over meter. The sight glass is positioned on the exterior of the gas/liquid separator vessel, and has a first inlet and a second inlet in fluid communication with a separation chamber of the gas/liquid separator vessel. The sight glass is further provided with a first outlet in fluid communication with the first inlet, and a second outlet in fluid communication with the second inlet. The sight glass has a tube extending between the first inlet and the second inlet with at least a portion of the tube being transparent to light in a visible range of wavelengths. The carry-over meter is provided with a first densitometer connected to the first outlet of the sight glass via piping and a second densitometer connected to the second outlet of the sight glass via piping.

What is claimed is: 
     
         1 . A method for determining a liquid volume fraction of entrained liquid in a separated gas, comprising:
 determining a gas density at separator conditions for a separated gas using a first densitometer;   determining a liquid density at separator conditions for a separated liquid using a second densitometer;   determining a mixture density of a gas and carry over liquid mixture at a gas outlet pipe of a separator using a third densitometer; and   calculating the liquid volume fraction based on the gas density, the liquid density, and the mixture density.   
     
     
         2 . The method of claim  18 , wherein the liquid volume fraction is calculated using an equation ρ m =LVF ρ l +(1−LVF) ρ g , wherein ρ m  is the mixture density, ρ l  is the liquid density, and ρ g  is the gas density.