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Designed for high performance, compact city-gate installations, frequent measurements, modular multi-component capability, and certification for PCS/HHV under OIML R140, WELLMEC, and ISO 6976.",{"@graph":14,"@context":71},[15,34,54],{"@type":16,"itemListElement":17},"BreadcrumbList",[18,23,27,31],{"item":19,"name":20,"@type":21,"position":22},"https://docshare.wps.com","Home","ListItem",1,{"item":24,"name":25,"@type":21,"position":26},"https://docshare.wps.com/document/","Document",2,{"item":28,"name":29,"@type":21,"position":30},"https://docshare.wps.com/document/technology/","Technology",3,{"item":32,"name":10,"@type":21,"position":33},"https://docshare.wps.com/document/chromex-gas-composition-and-more/675284/",4,{"url":32,"name":10,"@type":35,"image":36,"author":41,"headline":10,"publisher":44,"fileFormat":47,"inLanguage":8,"description":12,"dateModified":48,"datePublished":48,"encodingFormat":47,"isAccessibleForFree":49,"interactionStatistic":50},"DigitalDocument",{"url":37,"@type":38,"width":39,"height":40},"https://docshare.wps.com/thumbnails/chromex-gas-composition-and-more/675284.png","ImageObject",300,407,{"name":42,"@type":43},"dhado","Person",{"url":19,"name":45,"@type":46},"DocShare","Organization","application/pdf","2026-11-04",true,{"@type":51,"interactionType":52,"userInteractionCount":4},"InteractionCounter",{"@type":53},"ViewAction",{"@type":55,"mainEntity":56},"FAQPage",[57,63,67],{"name":58,"@type":59,"acceptedAnswer":60},"What does the Chromex system measure for gas quality analysis?","Question",{"text":61,"@type":62},"Chromex supports gas composition analysis and enables PCS/HHV measurement, including compound analysis such as hydrogen, H2S, and oxygen concentrations depending on the module configuration.","Answer",{"name":64,"@type":59,"acceptedAnswer":65},"How is Chromex designed for installation and measurement frequency?",{"text":66,"@type":62},"Chromex uses miniaturized modular architecture for compact city-gate installations and is designed to provide frequent and precise measurements, with one measurement every 5 minutes.",{"name":68,"@type":59,"acceptedAnswer":69},"Which certifications support PCS/HHV measurement?",{"text":70,"@type":62},"Chromex 400 (without Wi‑Fi) is certified for PCS/HHV measurement according to OIML R140 (Class A), WELLMEC, and ISO 6976.","https://schema.org",{"og:url":32,"og:type":73,"og:title":10,"og:site_name":45,"og:description":12},"article",{"robots":75,"canonical":32},"index,follow",{"doc_id":77,"site_id":7},675284,1793772846,{"code":4,"msg":80,"data":81},"success",{"doc_id":77,"user_id":82,"nickname":42,"user_avatar":83,"doc_module":4,"category_id":84,"category_name":29,"doc_title":10,"doc_description":12,"doc_content":85,"file_id":86,"file_url":87,"file_type":88,"file_size":89,"view_count":4,"is_deleted":4,"is_public":22,"is_downloadable":22,"audit_status":22,"page_count":90,"language":91,"language_code":8,"site_id":7,"html_lang":8,"table_of_contents":92,"faqs":93,"seo_title":94,"seo_description":12,"update_tm":78,"read_time":95},5909893218464,"https://ap-avatar.wpscdn.com/davatar_085a072bc5b1113ac321206ff7593b45",6,"INNOVATIVE SYSTEM FOR THE ANALYSIS OF GAS QUALITY AND PCS/HHV  \n1  \nEnabling the energy transition  \nRegas is a leading technology partner for the  \ntransition to a cleaner and safer energy  \nsystem.  \nWe provide innovative technologies for natural gas regulation, metering and analysis  \n& for injection and analysis of green gases  \nlike biomethane and hydrogen.  \n25 yeas of experience to drive meaningful  \ninnovation in the digitalization field and  \ntowards a more sustainable energy industry.  \nAdvanced control system for preheating  \nTechnologies and stations for biomethane injection  \nMarket leader for Odorization Automatic Systems  \nPlug&play unit of Power-to-gas for decarbonizing grids & hard-toabate industrial processes  \nDRS, MRS & Gas treatement plants  \nExpertise & Innovation  \nDigital Platform & AI for Multi-Gas Grid 4.0  \nGascromatographic devices for in-line gas analysis  \nGas inspection Systems  \nChromex | Gas composition and more  \n• Chromex is a multi-functional modular system based on miniaturized gas chromatography modules:  \n• Chromex can include up to 4 analytical modules for analysis of compounds like alkanes, alkenes, methane, ethane, propane, isobutane, n-butane, iso-pentane, n-pentane, hexanes and above, nitrogen, carbon dioxide for the determination of PCS , analysis of hydrogen, H2S and oxygen concentrations  \n• ATEX/IECEX – zone 1 Certified  \n4  \n• Certified according to international regulations OIML R140 / WELLMEC / ISO6976 for PCS/HHV measurement for natural gas and biomethane  \n• Same technological base of GRETA (more than 450 installations (proven technology)  \nChromex | Advantages  \n• Compliant to Italian and European regulations  \n• Hydrogen ready GC (up to 25% H2)  \n• GC technology that ensures the highest performance and reduced analysis times (one measurement every 5 minutes) -> frequent and precise measurements  \n• Extremely compact for installations in city gates  \n• Modular architecture and possibility of multi-component analysis (Calorific Value + H2S + O2 + CO2 with a sing e device)  \n• Maximum reliability and minimum maintenance costs  \n• Extremely optimized energy and carrier gas consumption = OPEX reduced to a minimum  \nChromex| miniaturized modules  \n6  \nAdvanced Technology   \n7  \nChromex| possible application   \n• Distribution and transport networks  \n• Renewable gases (Biomethane, Syngas and Hydrogen)  \n• Oil&Gas Industry  \nPossible applications:  \n• Calorific Value & Wobbe Index of natural gas  \n8  \n• Calorific Value & Wobbe Index of natural gas + H2 concentration (i.e. for hydrogen-ready networks)  \n• Biomethane application: Calorific Value & Wobbe Index of biomethane + H2S + O2 + CO2 with one device  \nTechnical features  \n\n| Sizes and Weight |  |\n| --- | --- |\n| Sizes | A 596, L 526, P 290 (mm) |\n| Weight | 39.2 kg (con kit opzionale Wi-FI) |\n| Power supply |  |\n| DC Input voltage | 24.0 V |\n| Typical power consumption | 7.71 A @ 24Vdc\u003Cbr>(ambient temperature 23° C, without options) |\n| Input current | 16.9 A max |\n| Recommended circuit breaker | 20 A (Characteristic T) 9 |\n| Maximum dissipated power in Running mode | 198 Watts |\n| Temperature |  |\n|  | -10° C / +55° C |\n\nOIML R140 Certification  \nChromEx 400 system (without Wi-Fi) is certified for PCS/HHV  \nmeasurement according to relevant standards:  \n• OIML R140 (Classe A)  \n• WELLMEC  \n• ISO6976  \n\n| OIML R140 Classe A |  |\n| --- | --- |\n| PC Repeatability | \u003C 0,1 % |\n| PC Maximum error | \u003C 0,5 % |\n| Peak repeatability | 10% @ 2 ppm |\n| Calibration frequency | One a year 10 |\n| System stabilization time | \u003C 2h |\n| Analysis time | 2 minutes for PCS/HHV |\n\n\n| Compounds and concentration ranges |  |  |\n| --- | --- | --- |\n| Min (%) Max (%) |  |  |\n| Nitrogen | 0,1 | 22 |\n| Carbon dioxide | 0,1 | 15 |\n| Methane | 49,9 | 100 |\n| Ethane | 0,1 | 20 |\n| Propane | 0,1 | 10 |\n| n-Butane | 0,1 | 2 |\n| 2-Methylpropane (iC4) | 0,1 | 2 |\n| n-Pentane | 0,15 | 0,35 |\n| 2-Methylbutane (iC5) | 0,1 | 0,35 |\n| 2,2 Dimethylpropane (neoC5) | 0","cbCaiqrbRhuLCeqr","https://ap.wps.com/l/cbCaiqrbRhuLCeqr","pdf",2444104,14,"English","# Expertise & Innovation\n## Digital Platform & AI for Multi-Gas Grid 4.0\n## Chromex | Gas composition and more\n## Chromex | Advantages\n## Possible application\n## Technical features\n## OIML R140 Certification","[{\"question\":\"What does the Chromex system measure for gas quality analysis?\",\"answer\":\"Chromex supports gas composition analysis and enables PCS/HHV measurement, including compound analysis such as hydrogen, H2S, and oxygen concentrations depending on the module configuration.\"},{\"question\":\"How is Chromex designed for installation and measurement frequency?\",\"answer\":\"Chromex uses miniaturized modular architecture for compact city-gate installations and is designed to provide frequent and precise measurements, with one measurement every 5 minutes.\"},{\"question\":\"Which certifications support PCS/HHV measurement?\",\"answer\":\"Chromex 400 (without Wi‑Fi) is certified for PCS/HHV measurement according to OIML R140 (Class A), WELLMEC, and ISO 6976.\"}]","Chromex | Gas composition and more | PDF",35,{"code":4,"msg":80,"data":97},[98,102,106,110,115,118,123,128,133,136,140],{"id":22,"doc_module":4,"doc_module_name":25,"category_name":99,"show_sort_weight":100,"slug":101},"Story & 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