Tianhong TH-150 Intelligent Medium-Flow Total Suspended Particulates (TSP) Sampler

Overview

The Tianhong TH-150 Intelligent Medium-Flow Total Suspended Particulates (TSP) Sampler is a rigorously engineered environmental monitoring instrument designed for compliant, high-reliability collection of airborne particulate matter in accordance with internationally aligned national standards. It operates on the gravimetric principle—drawing ambient air through a pre-weighed glass fiber filter at a precisely maintained volumetric flow rate of 100 L/min under working conditions. The collected TSP mass is subsequently determined by post-sampling filter weighing and calculation of mass concentration (µg/m³) referenced to standard temperature and pressure (STP: 273.15 K, 101.325 kPa). Its triple-channel architecture enables concurrent sampling of TSP and two independent gaseous pollutants (e.g., SO₂, NOₓ, O₃), supporting integrated ambient air quality assessment without sequential instrument reconfiguration.

Key Features

• Three independent, digitally regulated constant-flow channels—each fully auto-compensated for dynamic changes in system backpressure, line voltage fluctuation, and filter loading—eliminating reliance on mechanical rotameters and ensuring metrological traceability per JJG 943–1999.
• Patented brushless DC vacuum pump (Chinese invention patent granted) delivering stable 100 L/min flow with low power consumption and extended service life; optimized for field deployment where grid reliability is uncertain.
• Imported thermal mass-flow sensors coupled with embedded microcontroller-based real-time feedback control—providing flow accuracy within ±2% of setpoint across full operational range (80–120 L/min).
• Integrated 4.3-inch sunlight-readable color touchscreen interface supporting intuitive configuration, real-time parameter visualization (flow, temperature, atmospheric pressure, elapsed time), and on-device calibration.
• Dual-power architecture: seamless transition between AC mains and internal rechargeable DC battery—enabling uninterrupted 20+ hours of continuous TSP sampling at 100 L/min, meeting 24-hour valid sample requirements per HJ/T 374–2007.
• Onboard data management: 200 sampling event records stored per channel—including date/time stamp, actual flow, temperature, barometric pressure, cumulative volume (working & standard conditions), and user-defined site ID.

Sample Compatibility & Compliance

The TH-150 is validated for use with standard 203 mm × 254 mm glass fiber filters (e.g., Whatman GF/A or equivalent), compatible with gravimetric analysis protocols specified in GB/T 15432–1995. Its mechanical design, flow stability, and environmental parameter measurement subsystems satisfy the performance criteria outlined in HJ/T 374–2007 (TSP sampler technical specification) and HJ/T 375–2007 (general air sampler requirements). Calibration traceability is supported via built-in software-assisted flow, temperature, and pressure adjustment routines—facilitating routine verification in accordance with GLP-aligned field laboratory practices. While not certified to ISO/IEC 17025, its documented conformity with Chinese national metrological verification规程 (JJG 943–1999) ensures suitability for regulatory monitoring programs conducted under local environmental authority mandates.

Software & Data Management

All operational parameters—including real-time flow, ambient temperature, atmospheric pressure, and cumulative volumes—are logged automatically with timestamp resolution of 1 second. Data are stored in non-volatile memory with cyclic overwrite protection and support export via USB interface for offline analysis. The embedded firmware includes audit-trail-capable calibration logging: each software-based adjustment of flow zero/span, temperature offset, or pressure sensor gain is recorded with operator ID (if configured), date/time, and pre/post values—supporting basic 21 CFR Part 11–aligned accountability for QA/QC documentation. Optional thermal printer integration enables immediate hardcopy generation of sampling reports compliant with field logbook requirements.

Applications

• Ambient air quality monitoring networks (urban, rural, background stations)
• Environmental impact assessments (EIA) for industrial projects requiring baseline TSP and co-pollutant characterization
• Source apportionment studies involving synchronized particulate and gaseous species collection
• Regulatory compliance verification under China’s Ambient Air Quality Standards (GB 3095–2012)
• Research-grade exposure assessment in occupational hygiene and epidemiological cohort studies
• Mobile monitoring campaigns utilizing vehicle-mounted or portable tripod configurations

FAQ

What filter types are compatible with the TH-150 for TSP sampling?

Standard 203 mm × 254 mm glass fiber filters meeting GB/T 15432–1995 specifications are recommended; quartz fiber filters may be used for organic carbon analysis but require pre-baking validation.
Does the TH-150 meet international standards such as ISO 7708 or EN 12341?

It is designed and verified against Chinese national standards (GB, HJ, JJG); while its physical sampling methodology aligns with ISO 7708 principles for inhalable particles, formal ISO/EN certification is not claimed.
Can the three channels operate at different flow rates simultaneously?

No—the TH-150 maintains identical 100 L/min flow across all three channels; differential flow control is not implemented in this model.
Is firmware update capability available via USB or network?

Firmware updates are performed exclusively via USB flash drive using manufacturer-provided binary files and signed update utility; no remote or over-the-air update functionality is included.
What is the operating temperature and humidity range?

Rated for –20 °C to +50 °C ambient temperature and ≤90% RH (non-condensing), validated per HJ/T 375–2007 environmental stress testing protocols.