HUANKONG GHK-2052 Intelligent High-Volume Total Suspended Particulates (TSP) Sampler

Overview

The HUANKONG GHK-2052 Intelligent High-Volume Total Suspended Particulates (TSP) Sampler is a precision-engineered environmental monitoring instrument designed for gravimetric and radiological analysis of airborne particulate matter in ambient air, stack emissions, and occupational settings. It operates on the principle of isokinetic or constant-flow high-volume filtration, drawing ambient air through standardized 20.3 cm × 25.4 cm (8″ × 10″) quartz fiber or Teflon-membrane filters at user-defined volumetric flow rates—typically 1.13 m³/min (40 CFM) for TSP collection per EPA Method IO-3.1 and ISO 7708:1995. The system integrates real-time thermobarometric compensation to convert measured volumetric flow into standard temperature and pressure (STP)-referenced volume, ensuring metrological traceability in compliance with JJG 943–2011 (Chinese National Verification Regulation for TSP Samplers) and supporting protocols for radiological aerosol collection under WS/T 184–2017 (γ-spectrometric analysis of airborne radionuclides). Its microcontroller-based architecture enables autonomous operation over extended durations (up to 24 h continuous or programmable intermittent cycles), making it suitable for fixed-site monitoring networks, regulatory compliance audits, and field-deployed research campaigns.

Key Features

• Microprocessor-controlled constant-flow sampling with closed-loop feedback using calibrated differential pressure transducers, platinum resistance thermometers (PT100), and thermal mass flow sensors—ensuring ±2% flow stability across ambient temperature (−20 °C to +50 °C) and pressure (60–106 kPa) ranges.
• Real-time acquisition and digital logging of critical operational parameters: actual flow rate (L/min), cumulative sampled volume (m³), ambient temperature (°C), barometric pressure (kPa), filter inlet temperature/pressure, elapsed time, and accumulated power interruption duration.
• Full parameter programmability via intuitive keypad interface: setpoint flow (in working condition or STP), total sampling duration, interval timing for multi-cycle programs, and auto-start delay.
• Digital calibration capability for flow, temperature, pressure, and clock—eliminating mechanical potentiometer drift and enabling field recalibration against NIST-traceable reference standards.
• Robust overload protection logic: automatic shutdown if flow deviation exceeds ±10% of setpoint for ≥5 consecutive minutes—preventing filter overloading and data invalidation due to pump degradation or filter clogging.
• Non-volatile memory (EEPROM) retains up to 100 complete sampling records—including timestamps, environmental conditions, volume integrals, and power-failure logs—with CRC-16 error checking for data integrity.
• Brushless DC blower motor rated for >20,000 hours MTBF, delivering low vibration, minimal electromagnetic interference, and consistent torque-speed characteristics across voltage fluctuations (AC 220 V ±10%, 50 Hz).
• Modular mechanical design with quick-release filter holder, sealed gasketed chamber, and IP54-rated enclosure—facilitating rapid filter exchange, leak-checking, and maintenance in outdoor or industrial environments.

Sample Compatibility & Compliance

The GHK-2052 accommodates standard 203 mm × 254 mm (8″ × 10″) filter media including quartz fiber (for OC/EC analysis), PTFE membrane (for ion chromatography), cellulose ester (for microbiological assays), and nylon (for metal speciation). When equipped with optional, factory-certified PM₁₀ or PM₂.₅ impactor heads—each supplied with individual calibration certificates referencing ISO 10791-3 and EN 12341 test reports—the instrument meets equivalency requirements for EU Directive 2008/50/EC and US EPA Reference Methods EQPM-0398-099 and EQPM-0598-100. All firmware and hardware configurations support GLP-aligned data governance: audit trails, electronic signatures (via optional RS-232/USB host interface), and exportable CSV files compatible with LIMS integration. Device firmware conforms to IEC 61000-4 electromagnetic compatibility standards and carries CCC certification for domestic deployment.

Software & Data Management

Data retrieval is supported via built-in LCD display (240 × 128 pixel, backlit) and bidirectional serial communication (RS-232 or USB-to-serial adapter). A Windows-compatible desktop utility (provided on encrypted USB drive) enables batch download, time-series visualization, STP correction verification, and PDF report generation—including metadata fields required by CNAS-CL01:2018 and ISO/IEC 17025:2017. Raw logs contain ISO 8601 timestamps, sensor raw counts, compensated values, and status flags (e.g., “FLOW_ALARM”, “POWER_LOSS”). No cloud dependency: all processing occurs locally to preserve data sovereignty and meet GDPR/PIPL transfer restrictions.

Applications

• Ambient air quality monitoring networks for national TSP/PM₁₀/PM₂.₅ compliance reporting (e.g., China’s Ambient Air Quality Standards GB 3095–2012).
• Radiological surveillance around nuclear facilities, hospitals, and waste storage sites—collecting aerosols for subsequent γ-spectrometry per WS/T 184–2017.
• Source apportionment studies requiring size-fractionated mass loading data coupled with elemental or isotopic analysis (ICP-MS, AMS).
• Occupational hygiene assessments in mining, construction, and manufacturing where respirable dust exposure limits (e.g., OSHA PELs) must be verified.
• Method validation and interlaboratory comparison exercises under ISO/IEC 17043 proficiency testing schemes.

FAQ

Does the GHK-2052 comply with U.S. EPA or European Union reference methods?

Yes—when configured with certified PM₁₀ or PM₂.₅ impactors and operated per specified flow rates and filter media, it satisfies performance criteria equivalent to EPA Reference Method PS-1 and EN 12341:2014 for fractional sampling.
Can the unit operate unattended for 7 days?

It supports continuous operation up to 168 hours with external power; battery backup is not integrated, but external UPS systems (≥1 kVA) are routinely deployed in remote stations.
Is firmware upgradeable in the field?

Yes—via USB flash drive using signed binary images; version history and SHA-256 checksums are published in the technical manual for verification.
What filter media are validated for use with this sampler?

Quartz fiber (Pallflex Tissuquartz QAT-UP), PTFE membrane (Gelman Supor-450), and mixed cellulose ester (Millipore HAWP) filters have been verified for ≤1.13 m³/min flow without breakthrough or static artifact.
How is flow calibration traceability maintained?

Each unit ships with a factory calibration certificate referencing a primary standard rotameter calibrated against a NIST-traceable bell prover (±0.5% uncertainty); users may perform field verification using a dry gas meter or critical orifice calibrator.