CUBIC INSTRUMENTS Gasboard-3000GHG Greenhouse Gas & Flue Gas Analyzer
| Brand | CUBIC INSTRUMENTS |
|---|---|
| Origin | Hubei, China |
| Manufacturer Type | Authorized Distributor |
| Product Origin | Domestic (China) |
| Model | Gasboard-3000GHG |
| Instrument Type | Multi-Gas Flue Gas Analyzer |
| Repeatability | ≤±1% FS |
| Response Time (T90) | <25 s |
| Measured Gases | CO₂, CH₄, N₂O, CO, O₂ |
Overview
The CUBIC INSTRUMENTS Gasboard-3000GHG is a high-integrity, multi-component greenhouse gas and flue gas analyzer engineered for continuous, real-time monitoring of CO₂, CH₄, N₂O, CO, and O₂ in environmental emission sources, biogas upgrading facilities, landfill gas recovery systems, and industrial combustion processes. It integrates three complementary sensing modalities—micro-flow non-dispersive infrared (NDIR), dual-beam NDIR, and electrochemical detection—within a single, modular platform to ensure metrological rigor across wide dynamic concentration ranges. The core innovation lies in its proprietary micro-flow NDIR architecture with a patented half-cell reference chamber (PCT/CN2018100767; CN201710720122.1), which enables simultaneous differential absorption measurement without physical reference gas cells. This design eliminates baseline drift induced by humidity fluctuations, thermal gradients, or optical contamination—common failure modes in conventional single-beam NDIR systems—while maintaining sub-ppm resolution for trace greenhouse gas quantification.
Key Features
- Multi-gas capability: Simultaneous, independent measurement of CO₂, CH₄, N₂O, CO, and O₂ using optimized sensor technologies per analyte
- Patented micro-flow NDIR sensing: Achieves 1 ppm resolution for CO₂ (0–500 ppm range), CH₄ (0–1000 ppm), N₂O (0–1000 ppm), and CO (0–200/5000 ppm) with ±1% FS accuracy
- Dual-beam NDIR extension: Optional high-range CO₂ (0–25%/0–100%) and mid-to-high-range CO (0–1%/0–5%) modules deliver ±2% FS accuracy under elevated concentration conditions
- Electrochemical O₂ sensor: Stable 0–25% O₂ measurement with 0.01% resolution and ±2% FS accuracy, compliant with ISO 14644-1 cleanroom air monitoring requirements
- Robust sample conditioning interface: Integrated flow control (0.7–1.2 L/min), pressure regulation (2–50 kPa), and particulate filtration (<1 µm) ensure consistent inlet conditions
- Dual-output architecture: RS-485/RS-232 digital communication (Modbus RTU protocol) plus isolated 4–20 mA analog outputs for PLC integration and SCADA compatibility
- Embedded self-diagnostic system: Continuously monitors sensor health, optical path integrity, temperature stability, and power supply status with event logging
Sample Compatibility & Compliance
The Gasboard-3000GHG is designed for use with conditioned flue gas and ambient or process gas streams meeting EN 15267-3 and EPA Method 3A specifications. Sample conditioning requires removal of liquid water (no condensate permitted) and particulate filtration to <1 µm. The analyzer complies with electromagnetic compatibility standards IEC 61326-1 (industrial environment) and safety standard IEC 61010-1. Its measurement methodology aligns with ISO 12039 (CO₂ in flue gas), ISO 13864 (CH₄ in biogas), and ASTM D6522 (N₂O in stack emissions). Data integrity supports GLP/GMP audit trails when integrated with validated data acquisition software compliant with FDA 21 CFR Part 11.
Software & Data Management
The analyzer operates with embedded firmware supporting Modbus RTU register mapping for seamless integration into existing facility control systems. Optional CUBIC-provided PC software (Gasboard Control Suite v3.x) provides configuration, calibration management, real-time trending, alarm thresholding, and CSV export. All measurements include timestamped metadata (sensor ID, range mode, temperature, pressure, diagnostic flags). Firmware updates are performed via secure USB or serial interface with SHA-256 signature verification. Audit logs record all parameter changes, zero/span events, and calibration actions—enabling full traceability required under ISO/IEC 17025 accredited laboratories.
Applications
- Continuous emission monitoring systems (CEMS) for coal-fired, biomass, and waste-to-energy plants
- Greenhouse gas inventory reporting per IPCC Tier 2/3 methodologies (e.g., landfill gas collection efficiency, biogas upgrading yield)
- Process optimization in anaerobic digesters, cement kilns, and steel reheating furnaces
- Research-grade flux measurements in eddy covariance towers and soil respiration chambers
- Verification of carbon capture unit performance (pre- and post-scrubbing CO₂ concentration differentials)
- Calibration reference for portable gas analyzers in field validation campaigns
FAQ
What gas sensing technologies are used in the Gasboard-3000GHG?
It employs micro-flow NDIR for low-concentration CO₂, CH₄, N₂O, and CO; dual-beam NDIR for high-concentration CO₂ and CO; and electrochemical detection for O₂.
Does the instrument require external calibration gas cylinders?
Yes—zero gas (N₂ or synthetic air) and span gases matching target ranges are required for periodic verification and adjustment per ISO 14064-3 and EPA PS-15 protocols.
Can the analyzer operate unattended for extended periods?
Yes—its thermal-stabilized optics, auto-zero compensation algorithm, and built-in diagnostics support >30-day unattended operation in controlled environments with stable power and sample conditioning.
Is the device suitable for outdoor installation?
It is rated IP54 and intended for indoor or sheltered outdoor enclosures; ambient operating temperature range is 5–40°C with non-condensing humidity ≤80% RH.
How is moisture interference mitigated in the micro-flow NDIR module?
The half-cell reference chamber architecture provides intrinsic compensation for water vapor absorption effects, eliminating need for separate H₂O scrubbers in most applications where dew point remains below 4°C.
