EPRI Isokinetic Sampling Nozzle

Jonas, Inc. offers EPRI Isokinetic Sampling Nozzles for liquids or gases. An appropriate Nozzle is designed for the desired sample flow and typical conditions of the sample fluid. The Nozzles extract a representative isokinetic sample from a flow region removed from the pipe surface and at the average flow velocity of the sample fluid. This arrangement results in the withdrawal of the sample with representative concentrations of dissolved, suspended, and volatile constituents.

Sampling of gases and liquids for on-line grab sample chemical analysis can be a major source of errors. Up to several orders of magnitude concentration changes of dissolved and suspended impurities have been observed when sample withdrawal, cooling, or transport are not properly performed. The ASTM D1066-69 Steam Sampling Nozzles are rarely used because of their complexity, cost, non-isokinetic characteristics, and problems with use in large pipes. A more appropriate and functional design was developed and the design and performance of these nozzles was verified in the Electric Power Research Institute (EPRI) research project RP2712-8.

Jonas, Inc., 1113 Faun Road, Wilmington, DE 19803. Tel: 302-478-1375; Fax: 302-478-8173.