HUANKONG JHK-1200 Portable Dust Sampler

Overview

The HUANKONG JHK-1200 Portable Dust Sampler is an industrial-grade, microprocessor-controlled personal and area sampling instrument engineered for quantitative collection of airborne particulate matter in occupational health and environmental monitoring applications. It operates on the principle of isokinetic aspiration combined with inertial separation—using certified cyclone-based sampling heads calibrated to the British Medical Research Council (BMRC) respirable dust penetration curve—to ensure physiologically relevant particle size fractionation. Designed for compliance with international inhalable/respirable dust assessment protocols, the JHK-1200 delivers stable, pulse-free airflow across variable filter media resistance and ambient pressure conditions. Its constant-flow architecture maintains setpoint accuracy within ±2% over the full 1–5 L/min operational range, independent of battery voltage decay or filter loading—enabling traceable, repeatable gravimetric analysis per ISO 7708, EN 481, and OSHA Method ID-125M.

Key Features

• Proprietary embedded flow control algorithm ensuring high-resolution volumetric stability—even at sub-1.5 L/min critical respiratory zone flow rates
• Low-noise, brushless DC sampling pump with >10,000-hour service life and sustained negative-pressure capability up to −25 kPa
• Integrated high-precision electronic mass flow sensor with real-time temperature and pressure compensation (TPC), automatically calculating standardized volume (25°C, 101.325 kPa)
• Rechargeable lithium-ion battery pack supporting ≥8 hours of continuous operation; compatible with universal AC/DC input (100–240 VAC)
• Ruggedized ABS housing with IP54-rated ingress protection, optimized for field deployment in mining, construction, foundry, and cement manufacturing environments
• Industrial wide-temperature LCD (−20°C to +60°C operating range) with intuitive icon-driven menu navigation and multilingual UI support (English default)
• Triple-sampling mode selection: time-weighted average (TWA), instantaneous grab, and volume-triggered termination—programmable in 1-minute increments up to 9999 minutes
• Onboard non-volatile memory storing ≥10,000 complete sampling logs, each including date/time stamp, actual vs. set flow, cumulative volume, ambient T/P, and operator ID

Sample Compatibility & Compliance

The JHK-1200 is validated for use with standard 25-mm and 37-mm diameter PVC, mixed-cellulose ester (MCE), and polyvinyl chloride (PVC) filters, as specified in NIOSH Method 0500 and ISO 7203. Supplied with dual-certified sampling heads—including a GK2.69 respirable cyclone (BMRC-compliant) and a total dust nylon cyclone—the system meets all requirements for PC-TWA (Permissible Concentration–Time Weighted Average) determination under Chinese national standards GBZ/T 192.1–2007 and GB/T 20964–2007. Regulatory alignment extends to coal mine dust (GB 16248–1996), silica (GB 16225–1996), and cement dust (GB 16238–1996) exposure limit frameworks. All firmware and calibration routines are traceable to national metrology institutes; device-level verification reports include flow linearity, pressure drop, and timer accuracy test data.

Software & Data Management

Data retrieval is performed via standard USB-A interface using commercially available USB flash drives—no proprietary drivers required. Exported CSV files contain ISO 8601 timestamps, raw and compensated flow values (L/min), calculated standard volume (L), filter ID, sampling mode, and user-defined site tags. The internal audit trail retains full metadata for GLP-compliant record retention, including power-on/off events, calibration history, and parameter modification logs. Optional Bluetooth 5.0 thermal printer integration enables on-site hardcopy generation of sampling certificates compliant with internal QA checklists and third-party inspection requirements. Firmware updates are delivered via signed HEX packages with SHA-256 integrity verification.

Applications

• Workplace exposure assessment in metallurgy, quarrying, woodworking, and pharmaceutical powder handling facilities
• Regulatory compliance monitoring for respirable crystalline silica (RCS), coal dust, and Portland cement under national occupational exposure limits
• Baseline air quality surveys in urban industrial zones and near-point emission sources
• Validation of local exhaust ventilation (LEV) system performance per EN 689 and ACGIH TLV guidelines
• Field research supporting epidemiological studies on chronic obstructive pulmonary disease (COPD) and pneumoconiosis risk correlation
• Training and certification programs for occupational hygienists and safety officers accredited by provincial CDCs and MEE-affiliated labs

FAQ

What particle size fractions does the JHK-1200 measure?

It collects both total suspended particulates (TSP) and respirable dust (≤4 µm aerodynamic diameter) using interchangeable cyclones certified to the BMRC curve.
Is the instrument suitable for underground mining environments?

Yes—its IP54 rating, wide-temperature display, and high negative-pressure pump enable reliable operation in humid, dusty, and low-light subsurface conditions.
Does it support regulatory reporting formats required by Chinese OSH authorities?

All stored data fields align with mandatory reporting templates in GBZ/T 192.1–2007 Annex A, including standardized volume calculation and TWA concentration derivation logic.
Can sampling parameters be locked to prevent unauthorized changes?

Yes—administrator password protection secures configuration menus, calibration access, and system time settings per GB/T 20964–2007 Section 6.4.
How is flow calibration verified during routine maintenance?

The device supports external primary calibration using a NIST-traceable dry calibrator (e.g., Gilian Gilibrator-2); built-in zero-flow and span-check routines validate sensor drift before each shift.