Natural Gas Sampling System-3000 AMBIENT The NG-Sampling System-3000 is designated to take a sample stream from a pressurized natural gas souce. It can either be connected directly to a pipeline or a sampling cylinder containing compressed natural gas. The outlet of the sampling system can be connected directly to an analyzer (UT-3000) or the gas can be fed into a special sample bag (Tedlar® bag) and carried to the analyzer. Tedlar® bags are available as ac- cessories for the UT-3000 Mercury Ultratracer. www.envea.global General Information For measuring mercury in natural gas the pressure of a high pressure sample feed has to be reduced to a suitably low pressure before measurement. The new NG-SAMPLING SYSTEM-3000 follows a straight forward design. It integrates a minimum of components. All gas wetted parts in the sample path have been silica coated. This allows a very fast conditioning and low memory effects. Setup and Operating principle The high pressure sample passes a ball valve (1). A coated filter (2) removes particles from the sample. After that the sample gas passes a heated capillary tubing. Heating compensates the Joule-Thomson Effect caused by pressure drop inside of the capillary. The heater temperature is displayed on the thermometer T1. Pressure regulator PR-01 keeps the pressure at outlet of the capillary constant. The pressure is shown on pressure gauge P1 and can be adjusted on PR-01. Excess gas is vented off through flow meter FL1. With needle valve 3 the combined flow of sample gas to the analyzer and to the vent through flow meter FL2 can be adjusted. If the analyzer samples gas from this stream the flow through FL2 will decrease, but has always to be positive. In case of pressure breakthrough and a following increase of pressure at the low pressure side the safety valve V-03 will open and automatically release the pressure. With ball valve 1 at Sample IN the sampling system can be isolated from the gas source. The needle valve 3 allows to close the outlet sample flow. Benefits of the new NG SAMPLING SYSTEM 3000 The new NG-SAMPLING SYSTEM-3000 shows a considerable performance improvement compared to conventional models with integrated heated pressure regulator. • The NG-SAMPLING SYSTEM-3000 signal rises from start of measurement within a single measuring cycle (= 3 min) to more than 90% of the final concentration, whereas the conventional models need 10 cycles more. • The readings using the new NG-SAMPLING SYSTEM-3000 are clearly more stable than the readings of conventional models. • The readings using the new NG-SAMPLING SYSTEM-3000 are constant over a wide pressure range of the feed gas and pressure settings are kept much more stable. • In contrast to conventional models, the readings obtained with the new NG Sampling System 3000 are insensitive to parameters not set precisely. • The improved design of the NG-SAMPLING SYSTEM-3000 allows easier maintenance in case of contamination with liquid hydrocarbons. Performance Comparison: New NG-Sampling System-3000 and conventional model New model NG-Sampling System-3000 Conventional model with heated pressure regulator Cycle of Analysis Comparison of the results of the newly designed NG-Sampling System-3000 versus a conventional model with heated pressure regulator. Pressure ranges between 90 bar (at start) and 20 bar (at end). Coated sample gas zylinder for high pressure methane calibration gas ions may be subjet to change without notice Technical Specifications NG SAMPLING SYSTEM 3000 Particle filter 1 micron stainless steel T-filter Maximum Sample inlet pressure approx. 200 bar Pressure P1 (secondary side of 0.0 – 1.0 bar (0.28 bar / 4 psi typically) ©2020 ENVEA GmbH, Natural Gas Sampling System Specificat heated pressure regulator) Flow 1 0 - 5 l/min Flow 2 0 - 5 l/min Materials used Stainless Steel (partially coated), Viton, Ismaprene Power supply 230 VAC / 50 Hz Power consumption 175 VA Dimensions 45 x 23 x 36 cm (W x H x D) Weight approx. 10 kg ENVEA GmbH Analytical Technologies As a leading supplier of high precision analytical Liebigstraße 5 equipment, we strive at all times to offer top quality D-85757 Karlsfeld solutions. Our products are manufactured according mail.mi@envea.global to the ISO 9001 quality regulations. Tel.: +49(0)8131 - 50 57 20 Fax.: +49(0)8131 - 50 57 22 ENVEA (Headquarters) 111 Bd Robespierre / CS 80004 78304 Poissy CEDEX 4 - FRANCE Visit us at: +33(0)1 39 22 38 00 www.envea.global info@envea.global