Huayun GXH-3010E1 Portable NDIR CO₂ Analyzer with One-Touch Auto-Zero Function

Overview

The Huayun GXH-3010E1 is a portable, field-deployable non-dispersive infrared (NDIR) carbon dioxide analyzer engineered for high-reliability quantitative measurement in environmental monitoring, occupational health and safety, indoor air quality (IAQ) assessment, and fixed-source emission testing. Its core optical architecture employs a dual-beam NDIR detection system with a thermopile detector and a sealed, long-life infrared source, ensuring stable baseline performance and minimal optical degradation over time. The instrument operates on the principle of Beer-Lambert absorption spectroscopy—measuring CO₂-specific absorbance at 4.26 µm—while incorporating real-time compensation for ambient temperature fluctuations and cross-sensitivity to carbon monoxide. Designed and validated per multiple national metrological and regulatory standards—including GB/T 18204.2–2014, GBZ/T 300.37–2017, HJ 870–2017, and JJG 635–2011—the GXH-3010E1 meets Class II accuracy requirements as defined in Chinese national metrology regulations and is eligible for formal verification and certification by the National Institute of Metrology (NIM), P.R. China.

Key Features

• One-touch auto-zero function: Integrated six-port solenoid valve and built-in zero-grade filter enable rapid, operator-initiated zero calibration without external gas cylinders or manual valve manipulation.
• Dual-range configuration: User-selectable full-scale ranges of 0–0.500% or 0–1.000% CO₂ support both ambient air (typically 400–5,000 ppm) and industrial exhaust applications (up to 10,000 ppm).
• High-stability optical path: Sealed NDIR cell with anti-condensation coating and temperature-controlled detector housing minimizes drift under variable humidity and thermal conditions.
• Real-time CO interference correction: Validated to maintain ≤±0.3% FS error at CO concentrations up to 1250 mg/m³, critical for combustion-related sampling environments.
• Onboard data logging: Stores up to 5,000 timestamped measurements with date/time, CO₂ concentration (%, ppm, or mg/m³), flow rate, and battery status—exportable via USB to CSV-compatible spreadsheets.
• Field-ready ergonomics: Weighing ≤2.0 kg with IP54-rated enclosure, integrated Li-ion battery (≥6 h continuous operation), and ruggedized carry case compliant with IEC 60068-2 shock/vibration specifications.

Sample Compatibility & Compliance

The GXH-3010E1 is validated for direct analysis of undiluted, unfiltered ambient air, workplace breathing-zone samples, flue gas (post-particulate filtration), and HVAC duct streams. It complies with ISO 16000-23 for IAQ CO₂ monitoring and supports GLP-aligned documentation when used with its audit-trail-enabled data transfer software. While not intrinsically safe, it is suitable for Zone 2/Class I, Division 2 environments when operated outside explosive atmospheres. All factory calibrations are traceable to NIM-certified reference gases (CO₂ in N₂, certified to ISO 6141), and the instrument’s metrological performance satisfies the repeatability, drift, and response time criteria specified in JJG 635–2011 for secondary-class gas analyzers.

Software & Data Management

The included Windows-based Huayun DataLink software provides secure, password-protected data retrieval, visualization (time-series plots, histograms), and report generation (PDF/Excel). Each exported record includes embedded metadata: device ID, firmware version, calibration due date, operator ID (user-defined), and digital signature of the zero/span verification event. The software enforces 21 CFR Part 11–compatible audit trails—recording all user actions, parameter changes, and data exports with immutable timestamps. Firmware updates are delivered via signed binary packages, and configuration locks prevent unauthorized range or unit modifications during field use.

Applications

• Indoor Air Quality (IAQ) audits per ASHRAE 62.1 and GB 50325–2020, including classroom, office, and hospital ventilation assessments.
• Workplace exposure monitoring for CO₂ in breweries, greenhouses, cold storage facilities, and fermentation labs (per GBZ/T 300.37–2017).
• Stack emission testing from boilers, kilns, and incinerators in accordance with HJ 870–2017 methodology.
• Validation of demand-controlled ventilation (DCV) systems and HVAC commissioning protocols.
• Research-grade CO₂ flux studies in environmental chambers and soil respiration experiments.

FAQ

Is the GXH-3010E1 certified for regulatory reporting in China?
Yes—when calibrated against NIM-traceable standards and operated within its specified environmental limits, the instrument meets the metrological requirements for official use under GB/T 18204.2–2014 and HJ 870–2017.
Can the measurement units be switched between %, ppm, and mg/m³?
Yes—the display and data export support real-time unit conversion based on user-selected temperature and pressure inputs (standard or actual conditions).
What is the recommended calibration interval?
Annual verification is required per JJG 635–2011; however, field zero checks before each sampling session and span verification every 30 days are advised for critical applications.
Does the instrument support external power during extended field deployment?
Yes—it accepts 220 VAC ±10% input while simultaneously charging the internal battery, enabling uninterrupted operation during multi-day surveys.
Is firmware upgrade capability available remotely?
Firmware updates must be performed locally via USB using Huayun-signed binaries; no cloud connectivity or remote update functionality is implemented to ensure data integrity and cybersecurity compliance.