Tianhong TH-880F Automated Particulate & Flue Gas Analyzer

Overview

The Tianhong TH-880F Automated Particulate & Flue Gas Analyzer is an integrated, field-deployable environmental monitoring instrument engineered for regulatory-compliant stack emission testing in industrial and municipal combustion sources. It operates on the principle of isokinetic sampling combined with electrochemical gas sensing and gravimetric particulate quantification—enabling simultaneous, real-time measurement of flue gas parameters (O₂, SO₂, NO, NO₂, CO, H₂S), particulate mass concentration (mg/m³), volumetric flow rate (Nm³/h), flue gas temperature, static/dynamic pressure, moisture content, and excess air ratio. Unlike legacy single-chip microcontroller-based analyzers, the TH-880F employs an industrial-grade 486 CPU platform running a deterministic embedded OS, delivering deterministic timing control for high-reproducibility isokinetic tracking (<4 s response) and synchronized multi-parameter acquisition. Its architecture supports full compliance with Chinese national standards GB/T 16157 and HJ 836–2017, as well as international reference methods including ISO 9096 (determination of dust mass concentration in ducts) and EPA Methods 5 (particulate), 17 (stack particulates), and 26A (SO₂).

Key Features

• Isokinetic sampling control with automatic nozzle selection and dynamic flow tracking—ensures representative particulate capture without manual nozzle changes
• Dual-mode moisture determination: integrated dry/wet bulb sensor + user-input support for gravimetric and condensation-based calculation protocols
• Real-time graphical display of all measured parameters—including time-series curves for O₂, SO₂, velocity, and differential pressure during sampling
• Robust data integrity architecture: simultaneous write-to-electronic disk and removable SD card with Windows-style hierarchical file management (organized by year/month/day)
• Comprehensive fault diagnostics: voltage monitoring, over-pressure alarm, low-flow cutoff, pump stall detection, and reverse-suction protection during vertical-down sampling
• Industrial EMC design: meets IEC 61000-4 series immunity requirements for electrostatic discharge (ESD), radiated RF fields, and fast transient bursts
• Full system parameter backup and restore—preserves calibration coefficients, site metadata, and operational configurations across firmware updates or recovery events
• On-device T9 Chinese input for field annotation (sampling location, operator ID, notes)—compatible with standard USB keyboard via optional interface
• Integrated thermal printer with preview function and selective output (customizable fields, bilingual labeling support)
• Modular electrochemical sensor bay: factory-calibrated slots for O₂, SO₂, CO, NO, NO₂ (optional); all sensors comply with EN 45544-1 for toxic gas detection

Sample Compatibility & Compliance

The TH-880F is validated for use across coal-fired boilers, waste incinerators, cement kilns, glass furnaces, and metallurgical process stacks. It accommodates standard 47-mm quartz or glass-fiber filter cassettes (per HJ 836–2017), and accepts optional oil mist sampling probes for kitchen exhaust applications. All gas measurements adhere to electrochemical sensor performance criteria specified in ISO 12032 and JJG 968–2022. Particulate mass determination satisfies the precision requirements of GB/T 16157 (±5% repeatability at ≥50 mg/m³). The instrument’s pressure transducers are traceably calibrated to NIST-traceable deadweight testers; temperature sensors conform to ITS-90 with ±0.5 °C accuracy over the full operating range. For audit readiness, raw data files include embedded timestamps, operator IDs, GPS coordinates (when connected to external module), and checksum-verified metadata—supporting GLP-aligned documentation workflows.

Software & Data Management

Data acquisition and post-processing occur within a proprietary embedded environment that enforces strict separation between measurement execution and file I/O. Each sampling event generates a timestamped binary record containing raw sensor voltages, compensated values, diagnostic flags, and user-entered contextual fields. Files are stored in FAT32 format with hierarchical naming (e.g., /2024/06/15/TH880F_20240615_142233.bin), ensuring no filename collisions. External transfer occurs via USB 2.0 host mode (SD card reader compatible) or RS232 serial link. Optional PC software provides batch conversion to CSV/XLSX, automated report generation per HJ/T 48–1999 templates, and spectral validation against EPA QA/QC checklists. Audit trails—including parameter modification history and calibration log entries—are retained internally and exportable for 21 CFR Part 11–aligned review.

Applications

• Regulatory stack testing for CEMS performance verification and relative accuracy testing (RAT)
• Efficiency evaluation of electrostatic precipitators, baghouses, scrubbers, and FGD systems
• Source apportionment studies requiring co-located particulate and gaseous pollutant profiles
• Commissioning and periodic maintenance of industrial combustion assets
• Environmental impact assessments (EIA) and permit compliance monitoring
• Research on particulate formation mechanisms under varying stoichiometric conditions
• Mobile laboratory deployments where ruggedized, self-contained operation is essential

FAQ

Does the TH-880F support automatic calibration verification?
Yes—it includes built-in zero/span check routines for all electrochemical sensors using certified span gases (e.g., 100 ppm SO₂ in N₂); results are logged with traceable timestamps and pass/fail status.
Can the instrument operate continuously during extended field campaigns?
With optional external 12 V DC power supply and active condensate drainage, it supports unattended operation up to 8 hours per charge cycle; internal battery backup preserves settings during brief AC outages.
Is firmware upgrade supported in the field?
Yes—upgrades are delivered via signed firmware packages loaded from SD card; version rollback capability ensures recovery from incompatible updates.
What documentation accompanies the unit for metrological traceability?
Each analyzer ships with a factory calibration certificate listing uncertainty budgets per parameter, NIST-traceable references used, and environmental test conditions.
How is data security maintained during transfer to third-party LIMS platforms?
Raw binary files include SHA-256 hash signatures; optional encryption modules (AES-256) are available for secure transmission to cloud-based environmental data management systems.