HUANKONG GHK-1400A Portable Ambient Air Sampler
| Brand | HUANKONG |
|---|---|
| Origin | Shandong, China |
| Manufacturer Type | Direct Manufacturer |
| Product Category | Domestic |
| Model | GHK-1400A |
| Instrument Type | 24-Hour Constant-Temperature & Constant-Flow Gas Sampler |
| Configuration | Single-Channel Gas Sampler |
| Flow Rate Range | 18 L/min |
Overview
The HUANKONG GHK-1400A Portable Ambient Air Sampler is a field-deployable, battery-powered gas sampling instrument engineered for compliant, high-reliability collection of ambient air and fugitive emission samples under uncontrolled environmental conditions. It operates on the principle of active volumetric sampling—drawing air through sorbent tubes, Tedlar® bags, or impingers at a precisely regulated flow rate using a high-vacuum diaphragm pump. Designed to meet the stringent operational requirements of odor monitoring, industrial hygiene assessments, and ambient air quality surveys, the GHK-1400A delivers stable, temperature-compensated flow performance across variable ambient temperatures (5–35 °C) and backpressures up to –60 kPa—enabling robust sampling from low-permeability media such as activated carbon cartridges or high-resistance filter membranes. Its portable architecture supports both short-term grab sampling and extended 24-hour integrated sampling protocols in accordance with U.S. EPA Method TO-15, ISO 16000-6, and Chinese national standards including HJ 1262–2022 and HJ 905–2017.
Key Features
- High-capacity brushless diaphragm pump delivering consistent 18 L/min nominal flow with pressure compensation—engineered for sustained operation against ≥–60 kPa system backpressure.
- Integrated rechargeable lithium-ion battery pack providing ≥4 hours of continuous sampling at full flow, with real-time state-of-charge monitoring via embedded voltage regulation circuitry.
- Temperature-stabilized flow control system incorporating a calibrated rotor-type flowmeter and microprocessor-driven PWM motor control to maintain ±5% flow accuracy across operating conditions.
- Large-backlit LCD interface with intuitive menu navigation, enabling one-touch setup of sampling duration, start delay, and flow setpoint without external software.
- Automated sampling sequence execution: programmable timer initiates and terminates pump operation precisely per user-defined schedule—eliminating manual intervention and ensuring audit-ready temporal consistency.
- Rugged, IP54-rated enclosure with ergonomic carry handle and shock-absorbing silicone feet—designed for transport and deployment on-site without protective transit cases.
Sample Compatibility & Compliance
The GHK-1400A is validated for use with standard sampling media including stainless steel canisters (for VOC analysis), 37-mm and 47-mm PTFE or quartz fiber filters (PM2.5/PM10), multi-sorbent tubes (e.g., Tenax TA/Carbotrap), and 1–10 L Tedlar® or FlexFoil® odor sampling bags. Its flow stability and pressure tolerance ensure adherence to method-specific flow tolerances required by HJ 1262–2022 (three-point olfactometric bag method), HJ 905–2017 (odor source monitoring), GB/T 17061–1997 (workplace air sampler specifications), and GB 50325–2010 (indoor air pollutant sampling). The device supports GLP-compliant data logging when paired with optional external time-stamped event recorders.
Software & Data Management
While the GHK-1400A operates autonomously via its onboard controller, it supports optional USB-C data export for post-hoc review of sampling logs—including start/stop timestamps, cumulative volume, average flow rate, and battery voltage history. All logged parameters are stored in CSV format compatible with laboratory information management systems (LIMS) and regulatory reporting workflows. Firmware updates are performed via secure USB connection, and the unit complies with basic traceability requirements under ISO/IEC 17025:2017 Clause 7.7 (equipment records) and FDA 21 CFR Part 11 Annex A (audit trail capability when used with certified external logging modules).
Applications
- Fugitive odor emission characterization at wastewater treatment plants, composting facilities, and livestock operations per HJ 1262–2022.
- Indoor air quality (IAQ) assessment in residential, commercial, and institutional buildings per GB 50325–2010 and ISO 16000-22.
- Occupational exposure monitoring for VOCs, aldehydes, and sulfur compounds in manufacturing and chemical handling environments.
- Ambient background monitoring near industrial zones, roadways, and construction sites in support of HJ 2.2–2008 atmospheric EIA modeling inputs.
- Calibration verification of fixed-site air quality monitors using dynamic dilution or reference gas spiking protocols.
FAQ
Does the GHK-1400A support dual-channel or multi-point sampling?
No—the GHK-1400A is configured exclusively as a single-channel sampler. For parallel sampling, multiple units must be deployed synchronously with coordinated timing.
Is flow calibration traceable to NIST or CNAS standards?
The built-in rotor flowmeter is factory-calibrated against a primary volumetric prover traceable to CNAS-accredited reference standards; users may perform field verification using a dry gas meter or bubble flowmeter per GB/T 17061–1997 Annex B.
Can the device operate while charging?
Yes—continuous operation is supported during AC power input; battery charging and sampling functions operate concurrently without interruption.
What is the operating temperature range for reliable flow control?
The unit maintains flow accuracy within ±5% across an ambient temperature range of 5 °C to 35 °C and relative humidity ≤85% RH non-condensing.
Is firmware upgrade documentation available in English?
Yes—English-language release notes, version history, and upgrade procedures are provided upon request to registered end-users via HUANKONG’s technical support portal.
