Gas Analysis Sample conditioning, components and systems Sample Conditioning Systems require appropriately designed and manufactured components. A compromise in the design or in the selection of analytical equipment often leads to errors in the measurement, lack of reliability and increased maintenance costs. Our wide range of sampling products ensure a representative sample is presented to the analyser. Our analytical solutions ensure precise measurement and together, the Bühler solution provides a highly accurate and extremely reliable solution for your gas phase analytical requirements. Sample Probes Elegantly simple in concept and customized to meet the needs of any gas sampling application, careful attention is always required in the selection of: • • • • • composition of materials heated / non heated up- or downstream filters filters with air purge and capacitive vessels explosion proof version according to ATEX, CSA, C-US available Sample Pumps Sample gas must be transported through the entire sampling and conditioning system at steady pressure and flow. Too high a pressure in a pump can alter the sample‘s chemistry, variable pressure can induce error in the measurement. The Bühler pump design ensures steady even pressure and flow regardless of filter loading. Completely inert wetted materials, heated and un-heated designs combined with ease of maintenance make the Bühler pump the best analytical pump solution. Features include: • • • • unaffected by gas containing condensate highly corrosion resistant materials pumps for ATEX Zone 1 and Class I Div. 1 and 2 available FM-approved models available Sample Coolers Dry basis or standard condition measurements require a stable dew point. An unstable dew point will bias the measurement and in most cases will increase both analyser and system maintenance. Bühler Sample Gas Coolers provide the most stable dew point in the industry and feature the following: • • • • • • • fast and efficient dew point stabilization single or multistream types integrated automatic condensate drains or peristaltic pumps available selection of heat exchanger materials explosion proof version according to ATEX available self controlling, with alarm outputs FM-approved model available Sample Filters All Bühler sample filters are analytical grade. The housings provide easy access for maintenance. Main features include: • • • • • • • Moisture Detectors A moisture detector is an essential analyser safety device. These detectors protect the expensive and sometimes difficult to replace analyser components from liquid water. • • • easy to install adjustable sensitivity: detects before reaching liquid phase filter integrated and stand alone models easy to integrate and install no threads between head and bowl range of elements from fine to coalescing appropriate selection of materials Absorption filters available bypass and drain connections optional heated versions available Condensate Removal Any time water dew points are reduced with a cooler, condensate will need to be removed from the sample gas stream. Appropriate selection of all materials used for condensate removal is crucial. Condensate removal technologies include: • automatic drain for pressurized systems • peristaltic pumps integrated or stand alone Flow Meters and Accessories Inert and highly corrosion resistant flowmeters, regulating valves, shut off and selection valves are required components of any sampling system. These components control the flow rate of the sample gas to the analyser. • • • • NOx - Converter This unit allows for the accurate and reliable conversion of NO2 to NO which is a necessary function for NDIR, NDUV and chemiluminescent NOx analysers. • high conversion rates already at 400°C • withstands high NO2 concentration • • • • high exchange capacity easy change of reactor cartridge without tools highest conversion efficiency over time in the field optional NH3 scrubber available highly resistant materials suitable for gas or liquid bi-stable set point controller optional easy change of glass or flow indicator while staying online Analysers Our 40-year experience in the gas analysis field enables us to provide our customers with a comprehensive range of gas analysers. The product range includes maintenance friendly in-situ analysers with laser technology as well as ZrO2 cells. For extractive applications single or multi-channel analysers can be equipped with various measuring cells. Hence, a paramagnetic dumb bell cell, a ZrO2 module, IR-banks as well as eletro-chemical cells can be integrated into our analysers in accordance with the application. Pre-Engineered Sample Conditioning Solutions The SCS series combines all elements of a sample conditioning system into pre-engineered off the shelf packages that can be used for many of the routine applications. Key benefits of the SCS are: • • • • • no repetitive system engineering costs easy to maintain field replaceable as a complete assembly easily customized to meet a variety of applications off the shelf design permits quick delivery The life and accuracy of process analysers depend on reliable sample conditioning systems. These systems must be professionally designed and the components employed in the systems should be specifically built for demanding applications. Most of the problems that plant managers and maintenance personnel report are caused by design faults and the use of unsuitable material that fails under harsh conditions. Bühler has supplied sample conditioning systems to the world market for over 40 years. Amongst our references are Chemical plants, Power plants (both Nuclear and Combustion) Petrochemicals, Food industry and many others. Bühler‘s success and growth in this highly competitive market has depended on one „ credo “DO NOT COMPROMISE . The challenge for us has been to continuously improve the range of products specifically designed for sample conditioning systems. Bühler SCS components - designed for reliability under harsh conditions. Harkortstraße 29 · D-40880 Ratingen / Germany Tel.: +49 (0)2102 4989-0 · Fax: +49 (0)2102 4989-20 Email: [email protected] www.buehler-technologies.com DE 00 0001 04/2011
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