Junray ZR-3062 Integrated Flue Gas Velocity and Moisture Analyzer

Overview

The Junray ZR-3062 Integrated Flue Gas Velocity and Moisture Analyzer is an engineered field-deployable instrument designed for simultaneous, real-time measurement of flue gas velocity and moisture content under demanding industrial emission monitoring conditions. It employs the extractive capacitive-resistive (capacitive hygrometry + pitot-static differential pressure) principle to determine moisture concentration and volumetric flow velocity in situ. Unlike optical or chilled-mirror methods, the ZR-3062 utilizes a heated, corrosion-resistant probe with integrated temperature, pressure, and humidity sensing elements—ensuring stable operation in high-temperature (>200 °C), high-humidity (>95% RH), high-dust (>10 g/m³), and acidic gas environments typical of coal-fired power plants, cement kilns, waste incinerators, and steel sintering facilities. The system maintains full thermal integrity via continuous trace heating (≥120 °C) along the entire sampling path—including probe tip, transfer line, and internal sensor chamber—to prevent condensation, water adsorption, and measurement drift. All critical parameters—including static/dynamic pressure, stack temperature, differential pressure, and relative humidity—are acquired synchronously and processed using embedded algorithms compliant with GB/T 16157–1996, GB/T 11605–2005, and HJ/T 48–1999.

Key Features

• Integrated probe-and-mainframe architecture: Eliminates external cabling complexity and reduces field setup time; optimized for single-operator deployment in confined access stacks.
• High-brightness, wide-temperature TFT touchscreen (–20 °C to 60 °C operating range) with tactile keypad backup—designed for gloved-hand operation and readability under direct sunlight.
• Heated capacitive-resistive humidity sensor (imported OEM element) with NIST-traceable calibration certificate; certified for accuracy across 5–95% RH at 120 °C probe tip temperature.
• Automatic flue cross-sectional area input support: Enables on-device calculation of standard-state volumetric flow rate (Nm³/h), average velocity, and moisture-corrected pollutant mass emission rates per GB/T 16157.
• Dual-power architecture: Internal rechargeable Li-ion battery (≥8 h continuous operation) plus optional DC input (12–24 V) for extended field use or vehicle-mount applications.
• RS485 Modbus RTU interface pre-installed for seamless integration with CEMS platforms, data loggers, or SCADA systems; firmware-upgradable via USB flash drive.

Sample Compatibility & Compliance

The ZR-3062 is validated for use in flue gas streams containing SO₂ (≤2,000 ppm), NOₓ (≤1,000 ppm), HCl (≤500 ppm), and particulate loadings up to 20 g/Nm³. Its stainless-steel 316L probe body and PTFE-lined sampling path meet ISO 9001 manufacturing requirements and comply with Chinese national standards GB/T 16157–1996 (particulate and gaseous pollutant sampling methodology), GB/T 11605–2005 (humidity metrology), and HJ/T 48–1999 (instrument performance specifications for dust samplers). While not CE-marked or EPA EQVM-listed, its measurement uncertainty budget (±2% FS) aligns with QA/QC protocols required for regulatory reporting under China’s “Technical Specifications for Continuous Emission Monitoring Systems (CEMS)” (HJ 75–2017 and HJ 76–2017). Data logging integrity supports GLP-aligned audit trails when paired with timestamped storage.

Software & Data Management

Onboard firmware stores ≥50,000 complete measurement records—including timestamp, stack ID, velocity (m/s), moisture (% v/v), temperature (°C), static/dynamic pressure (kPa), and calculated standard flow (Nm³/h)—with automatic power-fail recovery. Data export is supported via FAT32-formatted USB drives (CSV format, UTF-8 encoded); no proprietary software required. Optional Bluetooth 4.2 module enables wireless pairing with certified thermal printers (e.g., Zebra ZQ520) for immediate field report generation. Firmware updates are delivered as signed .bin files with SHA-256 checksum verification. No cloud connectivity or remote telemetry is implemented—consistent with air-gapped operational security policies common in industrial plant control networks.

Applications

• Periodic compliance verification of flue gas moisture and velocity per national emission standards during stack testing campaigns.
• Commissioning and performance validation of desulfurization (FGD) and denitrification (SCR/SNCR) systems where water vapor dilution impacts NOₓ/SO₂ concentration correction.
• Baseline characterization of boiler efficiency and combustion optimization through real-time wet/dry basis conversion of O₂, CO, and CO₂ readings.
• Supporting Method 2 (velocity traverse) and Method 4 (moisture determination) equivalency assessments under U.S. EPA guidance frameworks for international clients conducting dual-standard audits.
• Field calibration verification of permanent CEMS installations where portable reference-grade velocity and humidity data are required for QA/QC reconciliation.

FAQ

What is the maximum flue gas temperature the ZR-3062 can measure continuously?
The probe is rated for continuous exposure up to 200 °C; optional high-temp probe variants (ZR-3062-HT) extend this to 300 °C with ceramic-sheathed sensors.
Does the instrument require periodic recalibration in the field?
Yes—annual sensor verification against NIST-traceable humidity and pressure standards is recommended; onboard zero/span checks support daily operational verification.
Can the ZR-3062 be used for low-velocity ducts (<1 m/s)?
It is calibrated and validated for velocities from 1.0 to 30 m/s; sub-1 m/s measurements fall outside specified accuracy limits per GB/T 16157.
Is the data export format compatible with LIMS or third-party environmental reporting platforms?
Yes—CSV output includes ISO 8601 timestamps, SI units, and parameter identifiers conforming to ASTM D6348–22 metadata conventions for automated ingestion.
How is moisture content reported—relative humidity or volumetric % H₂O?
Both: Relative humidity (RH%) at measured temperature/pressure, and volumetric moisture content (% v/v) referenced to dry flue gas at 0 °C and 101.325 kPa, calculated per GB/T 11605–2005 Annex B.