Natural gas analyzer Gasboard-3520

industrialcalorific valueexplosion-proof

Ex-proof Natural Gas Calorific Value Analyzer Gasboard-3520

Product Overview
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 applications. Certified to ATEX standards, the analyzer is suitable for operation in hazardous industrial environments. Gasboard-3520 provides multiple communication interfaces including RS485, 4–20 mA, and TCP/IP for seamless integration with Distributed Control System (DCS). Automatic calibration and low maintenance requirements enable reliable long-term operation.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 applications. Certified to ATEX standards, the analyzer is suitable for operation in hazardous industrial environments. Gasboard-3520 provides multiple communication interfaces including RS485, 4–20 mA, and TCP/IP for seamless integration with Distributed Control System (DCS). Automatic calibration and low maintenance requirements enable reliable long-term operation.

Application

• Natural Gas Production & Processing: Real-time gas composition analysis for quality control in gas production and processing operations.
• Fiscal Gas Metering & Trade Settlement: High-precision measurement compliant with OIML R140 Class A requirements for natural gas custody transfer and energy pricing.
• Pipeline Transmission & Distribution: Precise gas quality analysis for blending control and management of natural gas and hydrogen-blended gas in transmission and distribution networks.
• Gas Turbine & Power Generation: Real-time calorific data to optimize combustion and reduce exhaust emissions.
• Biomethane & Renewable Gas: Accurate composition and calorific value analysis for biomethane injection and renewable gas utilization.

Features

• Integrated Sensing Technologies: Integrates NDIR, TDLAS, TCD, and ultrasonic technologies to enable continuous real-time gas analysis with faster response and superior stability compared to conventional gas chromatographs (GC).
• Comprehensive Gas Parameter Output: Provides complete measurement output covering key gas components including CO₂, C₂+ heavy hydrocarbons and hydrogen fraction, as well as energy parameters including gross and net calorific value, Wobbe index, and density.
• Hydrogen-blended Gas Compatibility: Enables accurate and reliable hydrogen and hydrocarbon content measurement simultaneously, overcoming the carrier gas limitations of conventional GC analyzers.
• OIML R140 Class A High Precision: Complies with OIML R140 Class A requirements, delivering metering-grade measurement accuracy for fiscal custody transfer applications.
• Simplified Operation and Maintenance: Requires no combustion, carrier gas, or consumables, eliminating the complex auxiliary systems of conventional GC analyzers and reducing overall operating costs.

Specifications

• Gross Calorific Value (HsV): 33.966 46.954 MJ/m³ — output: yes
• Net Calorific Value (HiV): 31.467 42.458 MJ/m³ — output: yes
• Higher Wobbe Index (Ws): 43.956 53.946 MJ/m³ — output: yes
• Lower Wobbe Index (Wi): 41.3 51.6 MJ/m³ (composition-dependent) — output: yes
• Standard Density (Rho): 0.66 1.04 kg/m³ — output: yes
• Relative Density (d): 0.5-0.8 — output: yes
• CO2: 0-5 %vol — output: yes
• H2: 0-10 %vol — output: yes

Performance & Operational Data

• Measurement uncertainty: HsV/HiV/Ws/Wi/d ≤ 0.5%; CO2/H2 ≤ 1.0% : MPE ≤ ±0.1; CO2/H2 > 1.0% : MPE ≤ ±10%
• Repeatability: HsV/HiV/Ws/Wi/d ≤ 0.1%; CO2/H2 ≤ 1.0% : Repeatability ≤ ±0.02
• Update rate: 1 Hz; Response time (T90) ≤ 6 s
• Inlet gas pressure: 2 50 kPa; Optimal flow rate: 0.7 1.2 L/min
• Power supply: AC 220V ±10%, 50Hz ±1Hz
• Operating temperature: -10℃ +50℃; Storage: -25℃ +70℃; Relative humidity: 5 85% RH (non-condensing)
• Environmental protection: IP65; Electromagnetic/Mechanical grade: E2 / M1

Interfaces & Approvals

• Analog outputs: 4-20 mA
• Digital interfaces: RS232 or RS485; TCP/IP supported
• Metrological approval: OIML R140 Class A
• Explosion protection: Ex db IIC T6 Gb / Ex tb IIIC T80℃ Db

Technical specifications

• Model: Gasboard-3520
• Measurement outputs: gross/net calorific value, higher/lower Wobbe index, standard and relative density, CO2, H2, C1, C2+ and other hydrocarbons
• Calorific value ranges: HsV 33.966–46.954 MJ/m³; HiV 31.467–42.458 MJ/m³
• Wobbe index ranges: Ws 43.956–53.946 MJ/m³; Wi 41.3–51.6 MJ/m³ (composition-dependent)
• Gas component ranges: CO2 0–5 %vol; H2 0–10 %vol; CH4 60–100 %vol; C2+ 0–15 %vol
• Accuracy / MPE and repeatability as stated above
• Update rate: 1 Hz; Response time (T90) ≤ 6 s
• Protection & approvals: IP65, E2/M1, OIML R140 Class A, Ex db IIC T6 Gb / Ex tb IIIC T80℃ Db
• Communication: 4–20 mA analog outputs; RS232/RS485; TCP/IP