HUANKONG GHK-2053 Portable High-Flow Aerosol Sampler

Overview

The HUANKONG GHK-2053 Portable High-Flow Aerosol Sampler is an engineered field-deployable instrument designed for quantitative collection of airborne particulate matter (PM) and aerosol-phase semi-volatile organic compounds (SVOCs) from ambient air. It operates on the principle of isokinetic high-volume filtration sampling—drawing air through a standardized filter medium (e.g., quartz fiber, Teflon-membrane, or polyurethane foam) at precisely controlled volumetric flow rates. Its core architecture integrates real-time environmental parameter sensing (temperature, relative humidity, atmospheric pressure) with closed-loop digital feedback control of brushless DC fan speed to maintain constant mass flow under variable ambient conditions. This ensures compliance with gravimetric and chemical speciation requirements defined in regulatory monitoring protocols, particularly where representative time-integrated sample mass (>100 µg) is essential for trace-level analysis via GC-MS, ICP-MS, or ion chromatography.

Key Features

• Microcontroller-based closed-loop flow regulation using integrated mass flow, temperature, humidity, and barometric pressure sensors—enabling true constant-flow operation across ambient conditions (±2% setpoint stability over 0–40 °C, 10–95% RH).
• Compact, ruggedized chassis (dimensions: 320 × 240 × 210 mm; weight: <7.5 kg) with ergonomic carrying handle and IP54-rated enclosure for outdoor deployment.
• Real-time display of operational parameters: actual and setpoint flow rate (L/min, at standard or actual conditions), cumulative sampled volume (m³), elapsed time, interrupted time, ambient T/RH/P, and internal battery status.
• Digital calibration capability for flow sensor, humidity sensor, pressure transducer, and real-time clock—traceable to NIST-traceable references via USB interface.
• Programmable sampling modes: time-based (1 min–99 h 59 min), volume-based (0.01–9999.99 m³), or multi-stage sequential runs with independent parameter sets.
• Overload protection logic: automatic shutdown if measured flow deviates >10% from setpoint for ≥5 consecutive minutes—prevents filter breakthrough and data invalidation.
• Uninterruptible power management: embedded non-volatile memory retains all sampling metadata (start/stop timestamps, flow logs, environmental snapshots) during power loss; resumes sampling upon restoration without manual intervention.
• Modular inlet assembly with quick-connect, O-ring sealed interface for PM₁₀, PM_2.5, or cascade impactor adapters—compatible with ISO 10780, EN 12341, and EPA Method TO-13A configurations.
• Onboard data storage: ≥200 complete sampling records (including timestamped environmental metadata and flow deviation logs); exportable via USB 2.0 to FAT32-formatted USB flash drive.

Sample Compatibility & Compliance

The GHK-2053 supports standard 47 mm and 90 mm diameter filter substrates (quartz, PTFE, cellulose ester, PVC membrane) and sorbent-packed cartridges (e.g., XAD-2, PUFA, Tenax TA) for simultaneous particle-bound and vapor-phase SVOC capture. It meets functional requirements specified in HJ 691–2014 (“Technical Guidelines for Sampling Semi-Volatile Organic Compounds in Ambient Air”) and HJ 1009–2019 (“Operational Technical Specifications for Automatic Radiation Environmental Air Monitoring Stations”). While not certified to IEC 61326-1 (EMC) or ATEX/IECEx out-of-box, its electrical design conforms to CE-level safety principles (SELV isolation, thermal cutoffs) and may be validated for GLP-compliant field use when operated within manufacturer-specified environmental limits (–10 °C to +45 °C, non-condensing). Filter holder geometry adheres to ISO 29463-1:2011 dimensional tolerances for downstream gravimetric weighing and elemental analysis.

Software & Data Management

Data acquisition and configuration are managed via the optional GHK-PC Suite (Windows 10/11 compatible), which provides secure user authentication, audit-trail logging per FDA 21 CFR Part 11 Annex 11 principles (electronic signatures, change history, role-based access), and automated report generation (PDF/CSV). All stored records include ISO 8601 timestamps, GPS-coordinates (when paired with external GNSS module), and checksum-verified sensor raw values. Exported datasets comply with ASTM D6216-21 metadata conventions for air quality monitoring archives and integrate natively with EPA’s AirData and EEA’s AQ e-Reporting frameworks.

Applications

• Ambient air quality monitoring networks (PM_2.5/PM₁₀ mass concentration, black carbon, heavy metals, PAHs, PCBs)
• Occupational hygiene assessments in industrial zones (cement plants, smelters, spray booths)
• Radiological surveillance around nuclear facilities (aerosol-borne radionuclides: ¹³⁷Cs, ⁹⁰Sr, ²¹⁰Po)
• Field validation of low-cost sensor networks via co-located reference-grade sampling
• Source apportionment studies requiring high-mass filters for receptor modeling (e.g., PMF, CMB)
• Educational laboratory exercises in atmospheric chemistry and environmental instrumentation

FAQ

What filter types are supported by the GHK-2053?
Standard 47 mm and 90 mm circular substrates—including quartz fiber (for OC/EC analysis), PTFE membrane (for metals), and polyurethane foam (for SVOCs)—are fully compatible. Custom inlet adapters for cyclones or impactors can be ordered separately.
Does the sampler meet US EPA or EU reference method equivalency?
It fulfills the operational criteria of EPA Method IO-3.2 (high-volume PM₁₀) and EN 12341:2014 for gravimetric PM determination when used with certified filter media and calibrated against primary standards. Formal equivalency certification requires third-party verification per local regulatory authority protocols.
How is flow calibration performed?
Calibration is conducted digitally via the front-panel menu or PC software using a NIST-traceable primary calibrator (e.g., dry gas meter or critical orifice) at multiple flow points (10–120 L/min). The system stores up to three-point linear compensation curves per sensor.
Can the GHK-2053 operate continuously for 24+ hours?
Yes—when powered by a 12 V/7 Ah external deep-cycle battery or AC adapter, it supports uninterrupted sampling up to 72 hours at 100 L/min, depending on ambient temperature and filter loading.
Is firmware upgradeable in the field?
Yes—firmware updates are delivered as signed .bin files via USB stick and installed through the device’s maintenance mode, preserving all stored calibration and sampling history.