CUBIC INSTRUMENTS Gasboard-3000Plus Low-Range Online Flue Gas Analyzer

Overview

The CUBIC INSTRUMENTS Gasboard-3000Plus is a low-range, continuous emission monitoring (CEM)-grade online flue gas analyzer engineered for precision measurement of key combustion byproducts in industrial exhaust streams. It employs proprietary microflow non-dispersive infrared (NDIR) spectroscopy for SO₂, NO, and CO detection—optimized for high sensitivity at sub-ppm to low-ppm concentration levels—and complementary NDIR for CO₂ and electrochemical detection (ECD) for O₂. Its core innovation lies in the half-cell microflow gas chamber architecture, which minimizes optical path interference, reduces thermal and pressure-induced signal drift, and enhances immunity to ambient fluctuations—including temperature gradients and supply voltage variations. Designed for uninterrupted operation in demanding stack environments, the Gasboard-3000Plus delivers stable baseline performance over extended periods, supporting regulatory compliance with emission limits defined under national and regional environmental directives.

Key Features

• Half-cell microflow NDIR gas cell design for improved signal-to-noise ratio and reduced cross-sensitivity between CO and CO₂
• Dual-stage interference compensation: automatic real-time correction of CO₂ spectral overlap on CO measurement
• Low-concentration CO detection capability with minimum measurable range down to 500 ppm and resolution of 1 ppm
• Integrated air-driven zero-calibration system with programmable auto-zero cycles, eliminating need for external zero gas cylinders
• Onboard self-diagnostic engine continuously monitors sensor health, optical alignment, flow integrity, and electronic stability
• Ruggedized industrial enclosure rated IP65, suitable for mounting directly on ductwork or within analyzer shelters
• Modular sensor architecture enables field-replaceable gas modules without full instrument recalibration

Sample Compatibility & Compliance

The Gasboard-3000Plus is validated for use with hot, humid, and particulate-laden flue gases conditioned via standard extractive sampling systems (e.g., heated probe, chiller, particle filter). It complies with fundamental performance requirements outlined in ISO 12039 (stationary source emissions — determination of carbon monoxide, carbon dioxide and oxygen), EN 15267-3 (approval of automated measuring systems), and China’s HJ 75–2017 and HJ 76–2017 standards for CEMS verification. While not pre-certified to EPA PS-11 or MCERTS, its measurement uncertainty profile (±2% FS accuracy, <2% repeatability) aligns with Tier 2 QA/QC criteria for continuous monitoring in medium-risk emission sources. All firmware and data logging routines support audit-ready timestamping and event logging per GLP principles.

Software & Data Management

Data acquisition and remote configuration are managed via embedded web server interface accessible through standard Ethernet or optional RS-485/RS-232 serial links. The analyzer supports Modbus RTU/TCP protocols for seamless integration into SCADA, DCS, or EMS platforms. Raw sensor outputs, diagnostic flags, flow rate, temperature, and pressure status are logged internally with configurable intervals (1–300 seconds) and retained for ≥30 days. Export formats include CSV and XML; all timestamps adhere to UTC and include millisecond precision. Audit trail functionality records user login events, parameter changes, calibration actions, and fault clearances—meeting foundational traceability expectations under ISO/IEC 17025 and internal quality management systems.

Applications

• Continuous monitoring of SO₂, NO, CO, CO₂, and O₂ in coal-, oil-, and gas-fired utility boilers and industrial steam generators
• Emission profiling in metallurgical processes: sintering plants, blast furnaces, aluminum smelters, copper/nickel roasters
• Process optimization and combustion efficiency control in cement kilns, lime calciners, and rotary dryers
• Regulatory reporting for sulfuric acid, nitric acid, and phosphoric acid production facilities
• Stack testing and periodic verification in chemical fiber manufacturing and petrochemical cracking units
• Environmental compliance monitoring for municipal waste incinerators and biomass co-firing installations

FAQ

What gas detection technologies are used in the Gasboard-3000Plus?

Microflow NDIR for SO₂, NO, and CO; conventional NDIR for CO₂; and electrochemical detection (ECD) for O₂.
Does the analyzer require external zero gas for calibration?

No—it features an integrated air pump and programmable auto-zero function using ambient air as reference.
Can the instrument operate in high-humidity flue gas streams?

Yes, provided upstream sample conditioning includes chilled mirror or permeation dryer to maintain dew point below 4 °C.
Is the Gasboard-3000Plus compliant with international CEMS standards?

It meets technical performance benchmarks referenced in ISO 12039 and EN 15267-3; site-specific certification may require additional QA/QC validation per local authority requirements.
How often does the system require maintenance or sensor replacement?

NDIR modules typically exceed 24 months of operational life under normal conditions; ECD O₂ sensors are rated for 18–24 months and are field-replaceable with factory calibration data import.