JiDa-Xiaotian’e GDYK-160 Single-Channel Portable Atmospheric Sampler

Overview

The JiDa-Xiaotian’e GDYK-160 is a single-channel, portable atmospheric sampler engineered for reliable, field-deployable collection of ambient air samples in compliance with standard environmental monitoring protocols. It operates on the principle of controlled volumetric sampling using a precision diaphragm pump driven by a custom-engineered brushless DC motor with dual ball bearings—ensuring mechanical robustness and long-term flow consistency under variable thermal and barometric conditions. The instrument integrates high-stability temperature and pressure sensors to enable real-time calculation and automatic conversion of sampled volume to standard temperature and pressure (STP: 0 °C, 101.325 kPa) or standard ambient temperature and pressure (SATP: 25 °C, 100 kPa), as required by ISO 10155, EPA Method IO-3.1, and HJ/T 375–2007. Its fixed-flow architecture—centered on a calibrated laminar flow tube—eliminates reliance on feedback-controlled electronics, enhancing reliability in low-power and unattended deployments.

Key Features

• Precision-engineered single-channel sampling system with factory-calibrated flow path, delivering consistent 0.5 L/min nominal flow across the full operating temperature range (−10 °C to +45 °C).
• Integrated high-accuracy digital temperature and pressure sensors (±0.3 °C, ±0.5 kPa typical) enabling on-device STP/SATP volume correction per EN 12341 and GB/T 15439–2017.
• Custom-formulated elastomeric diaphragm pump with optimized compression profile and dual ball-bearing motor assembly—designed for ≥10,000 hours MTBF and minimal pulsation-induced flow deviation.
• Passive acoustic damping architecture reducing operational noise to <52 dB(A) at 1 m—meeting occupational exposure guidelines for extended field use.
• Rechargeable Li-ion battery pack supporting ≥8 hours continuous sampling at rated flow; battery state-of-charge and runtime estimation displayed in real time.
• Front-panel push-button interface with LED status indicators for flow verification, timer activation, and error alerts—including low-flow, over-pressure, and sensor fault diagnostics.

Sample Compatibility & Compliance

The GDYK-160 is validated for sampling gaseous pollutants including sulfur dioxide (SO₂), nitrogen oxides (NOₓ), ozone (O₃), volatile organic compounds (VOCs), and total suspended particulates (TSP) when used with appropriate sorbent tubes (e.g., Tenax TA, Carbopack B), impingers, or filter cassettes (e.g., quartz fiber, PTFE membrane). It meets the mechanical and metrological requirements of Chinese national standards HJ/T 375–2007 (Environmental Air Sampling Instruments) and JJG 956–2013 (Verification Regulation for Air Samplers). While not CE-marked or FDA-listed, its design aligns with core functional expectations of ISO/IEC 17025-accredited laboratories performing routine ambient air quality monitoring under national regulatory frameworks.

Software & Data Management

The GDYK-160 operates as a standalone hardware platform without embedded firmware-based data logging or Bluetooth/Wi-Fi connectivity. All sampling parameters—including start/stop timestamps, ambient T/P readings, and cumulative volume—are recorded manually by the operator in field logs compliant with GLP documentation practices. For audit readiness, users are advised to pair the device with external calibrated barometers and thermometers where traceable metrology is mandated. The absence of electronic data storage ensures immunity to firmware corruption and eliminates validation overhead associated with 21 CFR Part 11-compliant systems—making it suitable for routine surveillance programs where procedural integrity supersedes automated data capture.

Applications

• Ambient air quality monitoring networks (AQMN) for urban, rural, and roadside stations requiring cost-effective, maintenance-light samplers.
• Short-term emission source testing (e.g., stack screening, fugitive VOC surveys) where portability and battery autonomy are critical.
• Academic and municipal environmental labs conducting method validation studies per HJ 194–2017 (Guidelines for Ambient Air Quality Monitoring Techniques).
• Indoor air quality (IAQ) assessments in schools, offices, and public buildings under GB/T 18883–2022 (Indoor Air Quality Standard).
• Calibration and verification of passive samplers and diffusion-based monitors via co-located active sampling reference.

FAQ

Does the GDYK-160 support programmable multi-interval sampling?
No. It is configured for continuous single-interval operation only; timing is initiated manually and runs until stopped or battery depletion.
Is flow calibration traceable to national metrology institutes?
Each unit undergoes individual flow verification against a NIST-traceable primary standard (dry calibrator) prior to shipment; calibration certificates are available upon request.
Can the sampler be used with impinger solutions for formaldehyde or ammonia?
Yes—provided the impinger resistance remains within the pump’s static pressure capability (≤25 kPa at 0.5 L/min); users must validate system backpressure empirically for each setup.
What maintenance intervals are recommended?
Diaphragm replacement every 12 months or 2,000 operating hours; motor lubrication is not required due to sealed dual-ball-bearing construction.
Is the device compatible with international power sources (e.g., 110 V/60 Hz)?
No—it operates exclusively on its internal rechargeable battery; AC charging is performed via included 5 V/2 A USB-C adapter, compatible with global USB power supplies.