CUBIC Gasboard-3000GHG Greenhouse Gas & Flue Gas Emission Analyzer

Overview

The CUBIC Gasboard-3000GHG is a certified continuous emission monitoring system (CEMS)-grade analyzer engineered for simultaneous, real-time quantification of key greenhouse gases (GHGs) and combustion-related species in industrial flue gas streams. It employs three complementary, application-optimized detection technologies within a single integrated platform: micro-flow non-dispersive infrared (NDIR) spectroscopy for low-concentration CO₂, CH₄, N₂O, and CO; dual-beam NDIR for high-range CO₂ (up to 100%) and mid-to-high-range CO (up to 5%); and electrochemical detection for O₂. This multi-sensor architecture enables compliance-grade measurement across diverse stack conditions—from low-emission biomass boilers to high-CO₂ cement kilns—without requiring external dilution or pre-conditioning beyond standard particulate and moisture removal. The analyzer’s core micro-flow NDIR technology is built upon a patented half-chamber reference design (PCT/CN2018100767; CN201710720122.1), which intrinsically compensates for thermal drift and water vapor interference by generating an internal optical reference signal within the same detector housing. This eliminates reliance on separate reference cells or frequent zero/span calibration, delivering long-term stability essential for unattended operation in EPA Method 21, EN 15267, and ISO 14064-3 aligned monitoring programs.

Key Features

• Simultaneous five-gas analysis: CO₂, CH₄, N₂O, CO, and O₂ — all measured continuously with independent sensor modules and dedicated optical paths.
• Patented micro-flow NDIR architecture with integrated half-chamber reference, enabling sub-ppm resolution (1 ppm) and ±1% F.S. accuracy at low concentrations (e.g., 0–500 ppm CO₂).
• Configurable sensor fusion: Select micro-flow or dual-beam NDIR for CO₂/CO based on site-specific concentration profiles—ensuring optimal signal-to-noise ratio across 0–100% CO₂ and 0–5% CO ranges.
• Robust sample handling: Designed for direct hot-wet sampling; accepts inlet pressures from 2–50 kPa and flow rates of 0.7–1.2 L/min; compatible with standard heated sample lines and particulate filters (≤1 µm).
• Dual-output interface: Industrial-standard (4–20) mA analog outputs plus isolated RS-485/RS-232 digital communication (Modbus RTU protocol) for seamless integration into DCS, SCADA, and EPA-certified data acquisition systems (DAS).
• Embedded diagnostics: Self-monitoring firmware continuously validates sensor baseline, heater function, optical path integrity, and signal amplitude—logging fault codes per IEC 61508 SIL 2 functional safety guidelines.

Sample Compatibility & Compliance

The Gasboard-3000GHG is validated for use with flue gases from coal-fired power plants, sintering belts, cement clinker kilns, nitric acid production units, sulfuric acid plants, and municipal waste incinerators. Its micro-flow NDIR module meets ASTM D6522–22 requirements for low-level CO and CH₄ in exhaust streams, while its dual-beam configuration satisfies EN 14181 QA/QC Level 2 performance criteria for high-concentration CO₂ verification. All gas channels comply with ISO 12039 for CO₂ and ISO 12038 for CO, and O₂ measurement adheres to EN 14792. The instrument supports GLP-compliant data logging with time-stamped audit trails, configurable alarm thresholds, and user-accessible calibration history—fully traceable for regulatory reporting under EU MRV, US EPA GHGRP, and China’s National Carbon Market (NCM) monitoring protocols.

Software & Data Management

The analyzer operates with embedded firmware supporting both local LCD-based operation and remote configuration via CUBIC’s PC-based Gasboard Configuration Suite (v3.2+). Data export is compliant with EPA 40 CFR Part 75 Appendix B formatting, including hourly averaged values, calibration events, and diagnostic flags. All measurements are timestamped with NTP-synchronized UTC clocks, and raw sensor outputs (digital counts, temperature, pressure) are retained for ≥30 days onboard. Optional cloud connectivity enables secure MQTT-based transmission to third-party platforms (e.g., Siemens Desigo, Honeywell Experion) with TLS 1.2 encryption and role-based access control—meeting FDA 21 CFR Part 11 requirements for electronic records and signatures when deployed in pharmaceutical or biotech thermal oxidation processes.

Applications

• Continuous monitoring of CO₂, CH₄, and N₂O emissions from fossil-fueled and biomass-fired power generation units for GHG inventory reporting (IPCC Tier 2/Tier 3).
• Real-time optimization of selective catalytic reduction (SCR) and selective non-catalytic reduction (SNCR) systems via correlated CO and NOₓ surrogate (CH₄/N₂O) tracking.
• Process control in nitric acid plants where N₂O abatement efficiency must be verified per EU BREF guidelines.
• Stack testing and periodic verification of carbon capture readiness in pilot-scale amine scrubbers and oxy-fuel combustion trials.
• Compliance verification for industrial boiler upgrades under China’s “Dual Carbon” policy (peak carbon by 2030, carbon neutrality by 2060), including mandatory reporting of Scope 1 emissions per GB/T 32150–2015.

FAQ

Does the Gasboard-3000GHG meet EPA or EU regulatory certification requirements for CEMS use?

Yes—it is designed to meet the performance specifications of EN 15267-3 (QAL1) and supports QAL2 validation per EN 14181. While final certification requires site-specific QA/QC testing, the analyzer’s architecture and documentation package align with EPA PS-15 and ISO 14064-3 verification pathways.
Can it operate in high-moisture, high-dust flue gas without external conditioning?

It requires upstream particulate filtration (<1 µm) and dew-point suppression (no liquid condensate), but does not require chilled mirror or permeation dryers—the micro-flow NDIR’s half-chamber design inherently rejects water vapor cross-sensitivity.
What is the recommended calibration frequency for regulatory compliance?

Per EN 14181, daily zero/span checks are advised; full multi-point calibration is required every 15–30 days depending on application severity and local authority requirements. The unit stores ≥100 calibration events with full metadata.
Is remote firmware update supported?

Yes—secure over-the-air (OTA) updates are enabled via authenticated HTTPS or Modbus TCP, with rollback capability and SHA-256 signature verification.
How is measurement traceability ensured for audit purposes?

All calibrations use NIST-traceable gas standards (certified by BIPM-recognized labs); each event logs cylinder ID, expiration date, certified value, and deviation—exportable as CSV or PDF audit reports.