Patent ID: 8968660
Filing Date: 2015-03-03
Classification: G01N,Y10T

Abstract:
1. An on-line chemical analyzer for analyzing sample portions of fluid taken from a line, the on-line chemical analyzer comprising: a longitudinal chamber incorporating: a piston moveable in the longitudinal chamber, wherein a series of seals is mounted on the piston such that movement of the piston sequentially allows fluid communication along the longitudinal chamber; a measurement cell located in the longitudinal chamber to receive the sample fluid, the reagent fluid, or a mixture of sample and reagent; a detector located in or adjacent to the measurement cell; a substantially rigid container in fluid communication with the longitudinal chamber; a compressible reagent reservoir positioned within the substantially rigid container, wherein the compressible reagent reservoir is in fluid communication with the reagent inlet port; and a piston controller to position the series of seals within the longitudinal chamber to subsequently allow fluid communication along the longitudinal chamber; wherein the piston controller moves the piston so that fluid communication is established from the longitudinal chamber to the substantially rigid container to pressurize the compressible reagent reservoir and cause injection of the reagent fluid into the measurement cell.