ComparisonDimension (Gas Chromatograph) MeasurementPrinciple Direct multi-technology measurement: NDIR + TDLAS + TCD + Ultrasonic. Directly measures key componentsin realtimeand calculates calorific value, Wobbe index, and density online Component separation & analysis: Separates components in the column and analyzes sequentially, then calculates calorific value and density ResponseSpeed Seconds-level response: Real-time online measurement, fast reflection of gas composition changes, ideal for process dynamic control Minutes-level response: Sample injection, separation and detection take time; difficult to meetfast process control requirements Natural Gas Calorific Value Analyzer (J)H2 Measurement Performance Direct H2 measurement, high accuracy & repeatability, ideal for H2-blended natural gas. Indirect H2 calculation (difference method), low accuracy & large uncertainty for H2-containing mixtures. Measurement Scope & Outputs Comprehensive real-time outputs: components (H2/C02/CH4/C2+), calorific value (HHV/LHV), Wobbe index, density, etc. Limited real-time outputs: Component data only; calorific value, Wobbe index and density require post-calculation Maintenance & Operating Cost Low maintenance, no columns/carrier gas, minimal consumables —► low CAPEX/OPEX & total cost of ownership. High maintenance, requires carrier gas/regular calibration/column replacement—►high consumables & operating costs. Installation & Safety Plug-and-play installation, no carrier gas needed —► inherently safer, lower explosion risk. Requires complex infrastructure (carriergas, vent system)—►higher safety risks & requirements. Cubic Instruments (Wuhan) Ltd. Add: No. 6, Fenghuangyuan Middle Road, Fenghuang Industrial Park, Eastlake Hi-tech Development Zone, Wuhan, China ForSales: [email protected] For Administration: [email protected]

foi Specifications (jifijj) CUBIC INSTRUMENTS Gasboard-3520 is an advanced online natural gas calorific value analyzer designed for precise calorific value measurement and composition analysis of natural gas and hydrogen-blended gas. Based on NDIR, TDLAS, TCD, and ultrasonic sensing technologies, Gasboard-3520 enables accurate gas concentration and density measurement to automatically calculate gross and net calorific value, Wobbe index, and gas compressibility factor (Z) for flow correction. Compliant with OIML R140 requirements, Gasboard-3520 supports high-accuracy fiscal custody transfer metering...