Tianhong TH-YQ8T Multi-Functional Isokinetic Stack Sampling Probe
| Brand | Tianhong |
|---|---|
| Origin | Hubei, China |
| Manufacturer Type | Authorized Distributor |
| Country of Origin | China |
| Model | TH-YQ8T |
| Pricing | Available Upon Request |
Overview
The Tianhong TH-YQ8T Multi-Functional Isokinetic Stack Sampling Probe is an engineered solution for regulatory-compliant sampling of gaseous and particulate pollutants from fixed emission sources operating under ultra-low emission (ULE) standards. Designed in accordance with ISO 16911-1:2013, EPA Method 5, Method 29, Method 30B, and HJ 657–2013 (China), the probe enables simultaneous or sequential isokinetic sampling of mercury (Hg), lead (Pb), arsenic (As), chlorine gas (Cl₂), hydrogen chloride (HCl), hydrogen fluoride (HF), sulfuric acid mist (H₂SO₄), and total suspended particulates (TSP) or low-concentration PM. Its core architecture integrates thermally stable flow dynamics, corrosion-resistant material science, and modular interface design to ensure representative sample integrity across highly aggressive flue gas matrices — including those with pH < 1, high SO₃ content, and oxidizing halogen species.
Key Features
- Corrosion-Resistant Construction: Sampling tube fabricated from 316 stainless steel; internal gas pathways lined with fused-silica glass coating and PTFE-lined tubing to withstand prolonged exposure to concentrated acids (e.g., HCl, HF, H₂SO₄) and alkaline condensates.
- Surface-Treated Critical Components: Probe nozzle, elbow assembly, and filter holder all feature uniform glass-coating via vacuum vapor deposition — eliminating metal leaching and adsorptive losses during trace-metal sampling.
- Full-Path Heated Control: Integrated PID-regulated heating unit maintains precise temperature control from ambient to 180 °C along the entire sampling train (no cold spots), preventing condensation-induced analyte loss or phase separation — critical for volatile Hg⁰, HCl, and sulfate aerosol stability.
- Isokinetic Flow Assurance: Equipped with dynamic pitot-static pressure ports and compatible with standard velocity-traverse manifolds to support real-time isokinetic adjustment per ISO 16911-2 requirements.
- Modular Interface Compatibility: Accepts interchangeable sampling modules — including low-concentration PM probes (per HJ 836–2017), multi-metal impinger trains (for Hg/Pb/As speciation), and sorbent-based gas cartridges (e.g., KCl-coated filters for HCl, KOH-impregnated filters for HF).
- Safety-Certified Power Architecture: Operates exclusively on DC 12 V input — intrinsically safe for use in classified zones and eliminates risk of mains voltage leakage in wet or conductive stack environments.
Sample Compatibility & Compliance
The TH-YQ8T meets essential performance criteria for emissions monitoring under national and international regulatory frameworks. It supports sampling protocols aligned with China’s “Technical Specification for Monitoring of Ultra-Low Emissions from Coal-Fired Power Plants” (HJ 1263–2022), U.S. EPA 40 CFR Part 60 Appendix A, and EU BREF reference documents for LCP BREF (2017/C 153/01). All wetted surfaces comply with ASTM F2253-19 (biocompatibility of fluoropolymer coatings) and pass accelerated corrosion testing per ASTM B117 (500-hr salt spray). The probe’s structural weld integrity prevents backflow under positive-pressure stack conditions (>5 kPa), satisfying leak-tightness requirements outlined in EN 15259:2007.
Software & Data Management
While the TH-YQ8T is a hardware-only sampling probe (no embedded electronics), it is fully interoperable with industry-standard stack emission monitoring systems (CEMS) and portable sampling controllers — including Tianhong’s TH-8000 series samplers and third-party platforms such as Thermo Fisher FH62C, Testo 350, or ENVIRA IQ. When paired with compliant data acquisition units, the probe supports audit-ready digital logs that record traverse position, isokinetic ratio (%), nozzle temperature, and static/dynamic pressure differentials — enabling full traceability required under GLP, ISO/IEC 17025, and China’s CNAS-CL01:2018 accreditation criteria.
Applications
- Regulatory stack testing at coal-fired, biomass, and waste-to-energy power plants implementing ULE retrofit programs.
- Source testing for industrial boilers, sintering machines, coke ovens, and non-ferrous metal smelters where combined acid gas + heavy metal emissions are present.
- Method validation studies supporting development of new sorbent media or impinger solutions for Hg⁰ oxidation state capture.
- QA/QC field verification of continuous mercury monitors (CMMs) and FTIR-based multi-gas analyzers.
- Research applications involving aerosol-phase partitioning of semi-volatile metals under varying flue gas cooling profiles.
FAQ
Can the TH-YQ8T be used for mercury speciation sampling (Hg⁰ vs. Hg²⁺)?
Yes — when coupled with EPA Method 30B-compatible quartz filter + KCl-coated sorbent tube assemblies and maintained at ≥120 °C throughout the sampling path, it preserves redox speciation integrity.
Is custom-length configuration available?
Yes — standard length is 1500 mm, but lengths from 800 mm to 3000 mm are available with validated thermal uniformity and structural rigidity certification.
Does the probe include calibration documentation?
Each unit ships with a factory-verified dimensional inspection report and coating adhesion test certificate (ASTM D4541); NIST-traceable temperature calibration is performed per user-specified setpoint prior to shipment.
What maintenance intervals are recommended?
Glass-coated nozzles require visual inspection after every 50 hours of operation in high-acid environments; PTFE liners should be replaced after 200 hours or upon visible etching — log entries must be retained for regulatory audits.
