Tianhong TH-220 Flue Gas Parameter Analyzer

Overview

The Tianhong TH-220 Flue Gas Parameter Analyzer is a portable, field-deployable instrument engineered for real-time acquisition and computation of critical flue gas physical parameters during stack emission monitoring. It operates on the fundamental principles of differential pressure sensing (Pitot tube-based dynamic/static pressure measurement), thermistor-based temperature detection, and standardized volumetric flow calculation per ISO 16911-1:2013 and Chinese environmental standards HJ/T 397–2007 (Technical Specification for Stack Emission Monitoring) and HJ/T 48–1999 (Specifications for Sampling Instruments for Particulates in Exhaust Gases). The device integrates a calibrated dual-pressure sensor module and high-stability NTC thermistor to simultaneously capture dynamic pressure (ΔP), static pressure (P_s), and flue gas temperature (T_g). Using these inputs—and configurable stack cross-sectional area, moisture content, and barometric pressure—the TH-220 computes instantaneous flue gas velocity (v), actual volumetric flow rate (Q_act), and dry standard volumetric flow rate (Q_std,dry) at 273.15 K and 101.325 kPa, in accordance with EN 15259 and US EPA Method 2.

Key Features

• Compact, handheld form factor (≤2.1 kg) with ergonomic design for single-operator deployment in confined or elevated stack access points;
• 4.3-inch color TFT touchscreen interface with intuitive icon-driven navigation—no external PC required for setup or operation;
• Dual-channel pressure transducer system with ±0.5% full-scale accuracy over –10 to +10 kPa range (dynamic) and –20 to +20 kPa (static); temperature measurement range: 0–200 °C with ±1.0 °C accuracy;
• Onboard real-time statistical engine supporting 1-minute averaging, peak-hold, and min/max tracking for all measured parameters;
• Integrated thermal printer enabling immediate hardcopy output of measurement sessions—including timestamp, location ID, operator tag, and calculated flow metrics;
• Rechargeable 8.4 V Li-ion battery pack providing ≥8 hours continuous operation under typical sampling conditions (25 °C ambient, 1 Hz sampling rate); battery status and charging indicator displayed in real time.

Sample Compatibility & Compliance

The TH-220 is validated for use with stainless steel Pitot tubes (S-type or Type L) and compatible thermocouple or PT100 probes meeting HJ/T 397–2007 mechanical interface requirements. It supports both round and rectangular duct geometries; users input cross-sectional dimensions manually or select from preloaded duct templates. The analyzer conforms to electromagnetic compatibility (EMC) Class B per GB/T 18268.1–2010 and meets IP54 ingress protection for dust and water resistance during outdoor field use. While not certified to IEC 61508 or SIL standards, its firmware architecture follows GLP-aligned design principles—including immutable audit trail logging for all configuration changes and measurement start/stop events.

Software & Data Management

Data are stored internally in non-volatile memory with automatic timestamping (YYYY-MM-DD HH:MM:SS) and sequential record indexing. Each entry includes raw pressure/temperature values, computed flow rates, user-defined metadata (e.g., stack ID, test protocol), and environmental conditions (barometric pressure, % moisture if entered). Export is supported via USB 2.0 port to CSV-formatted files compatible with Microsoft Excel, LabVIEW, or custom QA/QC validation scripts. No cloud connectivity or remote telemetry is implemented—ensuring data sovereignty and alignment with on-premise industrial IT security policies. Firmware updates are performed offline using signed binary packages distributed through authorized Tianhong service channels.

Applications

• Regulatory stack testing for thermal power plants, cement kilns, and waste incinerators under China’s “Emission Permit System” (Ministry of Ecology and Environment Decree No. 16);
• Pre-commissioning verification of flue gas desulfurization (FGD) and selective catalytic reduction (SCR) system airflow distribution;
• Periodic performance audits of induced draft (ID) and forced draft (FD) fans in compliance with DL/T 467–2004 (Guidelines for Fan Performance Testing);
• Field calibration support for continuous emission monitoring systems (CEMS) requiring flow reference measurements per HJ 75–2017;
• Academic and engineering studies on combustion efficiency, excess air ratio, and flue gas heat loss estimation.

FAQ

What pressure ranges does the TH-220 support for dynamic and static measurements?
Dynamic pressure: –10 to +10 kPa; static pressure: –20 to +20 kPa. Calibration certificates traceable to national metrology institutes are available upon request.
Can the TH-220 compute wet/dry flow without manual moisture input?
No. Moisture content (% by volume) must be entered manually or imported from a co-located dew point meter or condensate trap measurement—consistent with ISO 16911-1:2013 Annex C guidance.
Is the thermal printer compatible with third-party label stock?
The built-in printer uses standard 57 mm wide thermal paper rolls (core diameter ≤12 mm); no adhesive-backed or laminated media is supported.
Does the device meet FDA 21 CFR Part 11 requirements?
No. The TH-220 is not intended for pharmaceutical manufacturing environments and lacks electronic signature, audit trail encryption, or role-based access control required under Part 11.
How often does the internal pressure sensor require recalibration?
Annual recalibration is recommended under normal field use; Tianhong provides accredited recalibration services with NIST-traceable documentation.