Junray ZR-3220 Portable Multi-Gas Infrared Flue Gas Analyzer
| Brand | Junray |
|---|---|
| Origin | Shandong, China |
| Manufacturer Type | Direct Manufacturer |
| Product Origin | Domestic (China) |
| Model | ZR-3220 |
| Instrument Category | Flue Gas Sampler |
| Measured Gases | SO₂, NO, NO₂, O₂, CO, H₂S, CO₂ |
| Flow Accuracy | ±5% |
| Sampling Flow Rate | 1.0 L/min |
| Flue Gas Velocity Range | 1–45 m/s |
| Maximum Moisture Content Tolerance | 40% (v/v) |
Overview
The Junray ZR-3220 Portable Multi-Gas Infrared Flue Gas Analyzer is a field-deployable, regulatory-compliant instrument engineered for simultaneous quantitative analysis of key flue gas constituents—including sulfur dioxide (SO₂), nitrogen monoxide (NO), nitrogen dioxide (NO₂), carbon monoxide (CO), carbon dioxide (CO₂), hydrogen sulfide (H₂S), and oxygen (O₂)—in industrial stack emissions. It employs non-dispersive infrared (NDIR) absorption spectroscopy as its primary detection principle, leveraging characteristic mid-infrared absorption bands of each target gas (e.g., SO₂ at ~7.3 µm, CO at ~4.6 µm, CO₂ at ~4.26 µm) combined with chemometric signal processing to resolve overlapping spectral features and suppress cross-interference. The analyzer integrates an actively temperature-stabilized NDIR optical module to minimize thermal drift, ensuring high reproducibility under variable ambient conditions—particularly critical in high-humidity, low-concentration sulfur environments typical of coal-fired or biomass boiler stacks. Designed in accordance with Chinese national standards GB/T 16157-1996, HJ/T 397-2007, HJ 629-2011, and HJ 692-2014, the ZR-3220 serves as both a reference method instrument for regulatory stack testing and a verification tool for continuous emission monitoring systems (CEMS) calibration and performance audits.
Key Features
- Simultaneous real-time quantification of seven gases (SO₂, NO, NO₂, CO, CO₂, H₂S, O₂) using dual-beam NDIR optics with embedded chemometric algorithms
- Short warm-up time (<8 min) enabled by precision-controlled thermal management of the infrared measurement cell
- Integrated lithium-ion battery supporting ≥3 hours of continuous operation; AC/DC dual-power capability for extended field deployment
- 7.0-inch wide-temperature TFT-LCD touchscreen with multi-angle articulating mount, IP54-rated enclosure for dust, moisture, and electrostatic protection
- Side-mounted gas inlet ports with integrated humidity sensor and automatic bypass valve activation when inlet relative humidity exceeds 40% (v/v)
- Visual filter status indicator and high-efficiency particulate pre-filter (≥0.5 µm capture efficiency) to safeguard pump and optical path integrity
- Onboard database for flue duct configuration parameters—including diameter, temperature, static pressure, and sampling point coordinates—with Chinese-character input support
- Automatic sensor lifecycle tracking: type, serial number, calibration date, and maintenance history dynamically managed in firmware
Sample Compatibility & Compliance
The ZR-3220 is validated for use across fixed-source emission points including power plant boilers, industrial furnaces, cement kilns, waste incinerators, and chemical process stacks. It accommodates flue gas velocities from 1 to 45 m/s and operates reliably at moisture contents up to 40% v/v without condensation-induced measurement bias—achieved via heated sampling line integration (standard ZR-D10 heated hose, 120 °C) and thermally regulated gas conditioning (ZR-D05G preprocessor). All measurement methodologies conform to HJ 629-2011 (SO₂, NDIR), HJ 692-2014 (NOₓ, NDIR), and JJG 968-2002 (instrument metrological verification). While not certified to ISO 12039 or EN 15267, its design principles align with GLP-aligned field testing protocols required for environmental compliance reporting under China’s Ministry of Ecology and Environment (MEE) frameworks.
Software & Data Management
Data acquisition, visualization, and export are managed through embedded firmware supporting dual-unit concentration display (ppm and mg/m³) with real-time stoichiometric conversion based on flue gas temperature, pressure, and O₂ dilution. All measurements are timestamped and geotagged (via optional external GPS module). Raw spectra, calibration logs, and QA/QC flags are stored in a tamper-resistant onboard flash memory (≥8 GB) and exportable via SD card or USB 2.0 interface in CSV and PDF formats compliant with MEE data submission templates. Bluetooth 4.2 enables wireless printing to compatible thermal printers (e.g., ZR-BT-Print series) and remote parameter configuration via Android/iOS companion app. Audit trails—including user login events, calibration actions, and sensor replacement records—are retained for ≥12 months to satisfy internal quality assurance requirements.
Applications
- Regulatory stack testing per HJ/T 397-2007 for emission inventory reporting and permit compliance verification
- CEMS performance evaluation, including relative accuracy test audits (RATA) and bias testing
- Process optimization in thermal power plants, where real-time O₂ and CO feedback supports combustion efficiency tuning
- Emergency response screening for accidental releases of toxic gases (e.g., H₂S, CO) in petrochemical or metallurgical facilities
- Research-grade flue gas characterization during pilot-scale clean coal or biomass co-firing trials
- Third-party environmental inspection services requiring portable, traceable, and standards-aligned instrumentation
FAQ
What gases does the ZR-3220 measure, and how are NOx species resolved?
The instrument measures SO₂, NO, NO₂, CO, CO₂, H₂S, and O₂ simultaneously. NO₂ is measured directly via its distinct NDIR absorption band; optional ZR-D28A catalytic converter (or built-in converter) enables total NOx (NO + NO₂) quantification by reducing NO₂ to NO prior to detection.
Is the ZR-3220 suitable for wet-stack applications?
Yes—its heated sampling system (120 °C), moisture-tolerant NDIR optics, and automatic humidity-triggered bypass ensure stable operation at up to 40% v/v water vapor content without condensate formation in the optical path.
Does the device meet international regulatory standards such as EPA Method 10 or EN 15267?
It complies fully with Chinese national standards (HJ, GB/T, JJG series) and is widely accepted for domestic regulatory enforcement. For export or multinational projects, users should verify equivalency through local authority pre-approval or third-party method validation.
How is calibration traceability maintained?
Calibration is performed using NIST-traceable certified gas mixtures; all calibration events—including date, operator ID, span gas concentrations, and zero drift values—are automatically logged with digital signatures and retained in the audit trail.
Can the ZR-3220 interface with enterprise-level environmental data platforms?
Raw data exports (CSV/PDF) are compatible with common LIMS and EMS platforms; API-based integration requires custom middleware development, as native Modbus TCP or OPC UA is not supported in standard firmware.
