CUBIC INSTRUMENTS Gasboard-9031EX Online Multi-Component Gas Analyzer
| Brand | CUBIC INSTRUMENTS |
|---|---|
| Origin | Hubei, China |
| Model | Gasboard-9031EX |
| Linear Error | CO/CO₂/CH₄/C₂H₂/C₂H₄/CₙHₘ: ±1% F.S. |
| H₂/O₂ | ±2% F.S. |
| Span Drift | CO/CO₂/CH₄/H₂: (0–100)% |
| Explosion Protection Rating | Ex d IIC T4 Gb |
Overview
The CUBIC INSTRUMENTS Gasboard-9031EX is a certified intrinsically robust online multi-component gas analyzer engineered for continuous, real-time monitoring of complex industrial gas streams under high-dust, high-moisture, and safety-critical conditions. Designed specifically for metallurgical, energy, and chemical process environments—including blast furnace gas, coke oven gas, dry quenching circulating gas, and electric heating furnace off-gas—the system integrates four functional modules: heated stainless-steel sampling probe, automated pretreatment unit, PLC-based control module, and multi-sensor gas analysis core. Its measurement architecture combines non-dispersive infrared (NDIR) spectroscopy for CO, CO₂, CH₄, C₂H₂, C₂H₄, and total hydrocarbons (CₙHₘ), thermal conductivity detection (TCD) for H₂, and electrochemical detection (ECD) for O₂—enabling simultaneous quantification of volumetric concentrations and higher heating value (HHV) calculation per ISO 6976 and ASTM D3588. This hybrid sensor approach eliminates reliance on combustion-based calorimetry while maintaining traceable accuracy across dynamic process ranges.
Key Features
- High-reliability dry-sampling architecture: Electrically heated stainless-steel probe with automatic pulse-air back-blowing prevents particulate accumulation and ensures long-term stability in >10 g/Nm³ dust environments.
- Dual-stage moisture management: Integrated single-stage refrigerated chiller + coalescing filter removes water vapor to <5 ppmv dew point, minimizing spectral interference in NDIR channels and extending optical cell lifetime.
- Full automation via industrial PLC: Scheduled sequences for sample acquisition, probe purging, condensate drainage, and zero calibration using built-in air pump—requiring no manual intervention during 7×24 operation.
- Multi-parameter output: Real-time volumetric concentration (vol%) for eight gases plus computed HHV (MJ/Nm³ or BTU/scf), compliant with EN 15403 and GB/T 13612–2022 for town gas quality assessment.
- Intrinsically safe design: Certified to Ex d IIC T4 Gb per IEC 60079-1, suitable for Zone 1 hazardous areas in petrochemical, coking, and syngas production facilities.
- Low operational cost: No consumables (e.g., carrier gases, catalysts, or reagents); mean time between failures (MTBF) exceeds 18 months under continuous duty per internal field data.
Sample Compatibility & Compliance
The Gasboard-9031EX accepts raw process gas at temperatures up to 200°C and pressures from –10 to +50 kPa(g), with particulate loading up to 20 g/Nm³. It meets mechanical and environmental requirements of IEC 61290-2 (industrial enclosure rating IP65), EMC compliance per IEC 61326-1 (industrial immunity), and electromagnetic emissions per CISPR 11 Group 2 Class A. All gas measurements are traceable to NIST-certified reference standards; calibration protocols align with ISO/IEC 17025–accredited laboratories. The system supports audit-ready data logging with timestamped sensor diagnostics, meeting GLP/GMP documentation expectations for regulated manufacturing sites.
Software & Data Management
Embedded firmware provides local HMI via 7-inch color LCD with touch interface, displaying real-time trends, alarm status, and self-diagnostic reports (e.g., optical path contamination index, detector drift rate, zero/span validation logs). Communication interfaces include isolated RS-232/RS-485 (Modbus RTU), analog 4–20 mA outputs (per channel), and Ethernet (TCP/IP Modbus TCP or OPC UA optional). Data export supports CSV and XML formats; integration with DCS/SCADA systems (e.g., Siemens PCS7, Honeywell Experion, Emerson DeltaV) is validated. Optional cloud gateway enables secure TLS 1.2–encrypted remote access for predictive maintenance analytics and centralized fleet monitoring.
Applications
- Blast furnace top gas recycling optimization and CO recovery rate calculation
- Coke oven gas quality control prior to by-product recovery and clean fuel injection
- Dry quenching circulating gas composition monitoring for explosion risk mitigation (LEL calculation)
- Electric arc furnace off-gas analysis for carbon balance modeling and slag foaming control
- Biomethane upgrading verification per EN 16723–1 (CH₄ purity, O₂, H₂S, siloxanes proxy via CₙHₘ trend)
- Process safety interlock triggering based on H₂/O₂ ratio deviation thresholds per NFPA 85 and API RP 500
FAQ
What gas components does the Gasboard-9031EX measure simultaneously?
CO, CO₂, CH₄, H₂, O₂, C₂H₂, C₂H₄, and total non-methane hydrocarbons (CₙHₘ), plus calculated higher heating value (HHV).
Is the analyzer certified for use in hazardous locations?
Yes—it carries Ex d IIC T4 Gb certification per IEC 60079-1, approved for installation in Zone 1 gas hazardous areas.
How is zero calibration performed?
Using the integrated air pump and ambient air as zero reference; fully automated with configurable frequency (e.g., daily or per shift).
Does the system comply with FDA 21 CFR Part 11 for electronic records?
While not inherently Part 11–compliant out-of-the-box, audit trail logging, user access controls, and electronic signature support can be enabled via optional software package aligned with ALCOA+ principles.
Can the analyzer operate without external cooling water or compressed air?
Yes—all subsystems—including probe heating, refrigeration, and back-blowing—are self-contained and powered solely by 220 VAC ±10%, 50/60 Hz.
