Huayun GXH-3010F Portable NDIR Carbon Dioxide Analyzer

Overview

The Huayun GXH-3010F Portable NDIR Carbon Dioxide Analyzer is a field-deployable, single-component gas measurement instrument engineered for high-accuracy, real-time quantification of carbon dioxide (CO₂) in ambient air, indoor environments, occupational settings, and fixed emission sources. It operates on the principle of non-dispersive infrared (NDIR) absorption spectroscopy—leveraging the characteristic infrared absorption band of CO₂ near 4.26 µm. A broadband IR source emits radiation through a sample chamber; a dual-wavelength detector system differentiates the CO₂-specific signal from background interference using reference and active channels, enabling robust compensation for optical aging, humidity-induced scattering, and minor cross-sensitivity. The analyzer integrates an internal sampling pump with adjustable flow control (0.5–1.0 L/min), ensuring consistent volumetric draw across variable backpressure conditions. Designed to meet stringent metrological requirements, it holds China’s CPA (Certification of Pattern Approval) and complies with GB/T 18204.2–2014 (public health monitoring), GBZ/T 300.37–2017 (workplace toxicant analysis), HJ 870–2017 (stationary source emissions), and JJG 635–2011 (national verification regulation for CO/CO₂ infrared analyzers). Its performance meets Class II accuracy specifications per Chinese national standards, supporting traceable calibration and certification by provincial metrology institutes or the National Institute of Metrology (NIM).

Key Features

• Integrated zero-filter module with one-touch automatic zero calibration—eliminates manual span gas dependency during routine field use
• High-resolution 5-inch color capacitive touchscreen interface with intuitive icon-driven navigation and multilingual menu support
• Real-time unit conversion: simultaneous display of % CO₂, mg/m³ (dry basis, STP-corrected), and ppm (optional via firmware configuration)
• Onboard data logging capacity of up to 30,000 measurement records with timestamp, temperature, pressure, and battery status metadata
• Dual USB ports: one for direct U-disk data export (CSV format), the other for PC connection and firmware updates via included Windows-compatible software
• Rechargeable Li-ion battery (≥6 h continuous operation at 1 L/min flow) with AC/DC dual-mode power input (220 V ±10%, 50 Hz)
• Ruggedized ABS+PC housing with IP54-rated ingress protection; ergonomic carry handle and shock-absorbing rubber corners for transport durability
• Optional Bluetooth thermal printer module (sold separately) for immediate field report generation
• Configurable averaging modes: user-selectable 1-min, 10-min, hourly, and daily mean calculation with auto-reset logic

Sample Compatibility & Compliance

The GXH-3010F is validated for use with clean, dry, non-corrosive gas matrices typical of indoor air quality (IAQ), workplace breathing zones, greenhouse ventilation monitoring, and flue gas pre-conditioned streams (post-particulate filtration and moisture removal). It exhibits minimal interference from CO (<±0.3% FS at 1250 mg/m³), methane (<±0.5% FS at 5000 ppm), and water vapor (compensated via integrated temperature/pressure sensors and algorithmic correction). The instrument conforms to ISO/IEC 17025–2017 general requirements for competence of testing and calibration laboratories when operated within its specified environmental envelope (10–45°C, ≤90% RH non-condensing). Its metrological traceability aligns with China’s national legal metrology framework and supports GLP-compliant documentation workflows—particularly where audit-ready records (e.g., calibration logs, zero/span verification timestamps) are required under GB/T 27025 or ISO 14001 environmental management systems.

Software & Data Management

The bundled Huayun DataMaster™ PC software provides secure, structured data import, visualization, and reporting. It supports batch export to Excel-compatible CSV, PDF summary reports with embedded instrument ID and operator fields, and customizable pass/fail thresholds aligned with GBZ 2.1–2019 occupational exposure limits. Audit trail functionality records all parameter changes, calibration events, and user logins—meeting basic electronic record integrity expectations under China’s Good Laboratory Practice (GLP) guidelines. While not FDA 21 CFR Part 11–certified out-of-the-box, the software architecture permits integration with third-party LIMS platforms via ASCII/Modbus RTU protocol over USB virtual COM port. Firmware updates retain full backward compatibility with historical data structures and require no re-validation of stored measurement archives.

Applications

• Indoor air quality assessment in schools, offices, hospitals, and public transport hubs per GB/T 18883–2002
• Ongoing compliance monitoring of CO₂ levels in confined workspaces (e.g., breweries, fermentation facilities, cold storage rooms)
• Pre- and post-maintenance verification of HVAC system efficiency in commercial buildings
• Field screening of stack emissions from small-scale combustion sources (boilers, kilns, biomass heaters) prior to formal CEMS deployment
• Educational demonstrations of gas laws, respiration physiology, and climate-relevant trace gas behavior
• Research-grade spot measurements in agricultural enclosures, vertical farms, and controlled-environment growth chambers

FAQ

What is the certified accuracy class of the GXH-3010F?
It meets Class II specifications per JJG 635–2011 and is eligible for secondary-level verification certificates issued by provincial metrology institutes or NIM.
Can the instrument measure CO₂ in humid or particulate-laden exhaust streams?
No—sample gas must be filtered (≤1 µm) and dried (dew point ≤5°C) prior to inlet to prevent optical window fouling and condensation-induced signal attenuation.
Is external calibration gas required for routine operation?
Zero calibration is fully automated using the built-in catalytic filter; span calibration requires certified CO₂ standard gas (e.g., 0.250% in N₂) at least once per quarter or after sensor replacement.
Does the device support regulatory reporting formats such as HJ 870–2017 Annex B?
Yes—the onboard calculation engine applies the mandatory dry-to-wet conversion, O₂ correction, and standard cubic meter normalization specified in HJ 870–2017 for stationary source reporting.
How is data integrity ensured during long-term unattended logging?
Each logged record includes CRC-16 checksum, real-time clock stamp, and battery voltage snapshot; corrupted entries are automatically flagged and excluded from export.