XQC-15E Electronic Timer-Controlled Portable Air Sampler

Overview

The XQC-15E Electronic Timer-Controlled Portable Air Sampler is a precision-engineered, battery-operated sampling instrument designed for quantitative collection of airborne contaminants—including toxic gases, vapors, aerosols, and particulate matter—in occupational and ambient environments. It operates on the principle of volumetric displacement via a diaphragm pump, delivering stable, calibrated airflow across variable load conditions. Engineered for field-deployable reliability, the XQC-15E meets core functional requirements for compliance-driven air monitoring programs under OSHA 29 CFR 1910.1200 (Hazard Communication), NIOSH Manual of Analytical Methods (NMAM) Chapter 2, and ISO 16000-14 for indoor air quality assessment. Its compact form factor (137 × 88 × 45 mm), sub-500 g mass (including batteries), and dual power architecture—supporting both alkaline dry cells and rechargeable Ni-Cd batteries—enable extended unattended operation in remote or infrastructure-limited settings.

Key Features

• High-efficiency diaphragm pump with acid/alkali-resistant rubber valve plates, sustaining ≥1.5 L/min flow at 40 mmHg backpressure and ≥25 kPa maximum vacuum pressure
• Eight-position fixed electronic timer with manual override; selectable durations: 5, 10, 15, 30, 40, 50, and 60 minutes, plus manual mode—timing accuracy ≤ ±1%
• Dual-status LED indicators: red operational light (ON during sampling); automatic shutdown and indicator extinction at ≤6 V DC to prevent battery over-discharge and protect Ni-Cd cell integrity
• Wide-flow regulation range (0.1–1.5 L/min) with 2.5-grade flowmeter calibration and stability ≤ ±5% over continuous operation
• Integrated dual-function power module: switch-selectable “Stabilized Output” (8 V DC for sampling) and “Charging Mode” (auto-terminated when battery reaches nominal voltage)
• Robust inlet protection system featuring replaceable polyurethane foam and fibrous filter media—swells upon liquid ingress to seal intake and prevent pump contamination

Sample Compatibility & Compliance

The XQC-15E supports standardized sampling media per widely adopted analytical protocols: glass impingers (e.g., midget impingers per NMAM Method 6001), charcoal tubes (NIOSH Method 1501), silica gel tubes (NIOSH Method 1003), and cyclone-based inhalable dust samplers. Its flow consistency and low pulsation profile ensure adherence to ISO 7708:2017 (particle size-selective sampling) and EN 13205:2001 (pump performance verification). The instrument complies with electromagnetic compatibility (EMC) requirements per IEC 61326-1 for laboratory and field use, and its mechanical design satisfies IP54-rated ingress protection against dust and water splashes during transport and setup.

Software & Data Management

As a hardware-controlled analog sampler, the XQC-15E does not incorporate embedded firmware or digital data logging. All timing, flow control, and status feedback are implemented through discrete analog circuitry and electromechanical switches—ensuring deterministic behavior, zero firmware vulnerability, and full traceability in GLP/GMP-regulated workflows where audit trails must be manually documented. Field logs—including start/stop time, battery voltage at initiation, flow rate setting, sampling medium type, and environmental temperature (5–40 °C operating range)—are recorded externally using standardized chain-of-custody forms aligned with EPA Method TO-17 and ISO/IEC 17025 documentation frameworks.

Applications

• Occupational hygiene monitoring for VOCs (benzene, toluene, xylene), aldehydes (formaldehyde), acid gases (HCl, SO₂), and metal fumes in industrial facilities
• Indoor air quality (IAQ) surveys in schools, offices, and healthcare settings per ASHRAE Standard 62.1
• Short-term exposure limit (STEL) and time-weighted average (TWA) sampling per OSHA Z-tables and ACGIH TLVs®
• Field validation of fixed-site air monitors and sensor network calibration
• Emergency response screening during chemical spills or confined-space entry assessments
• Research-grade atmospheric sampling for subsequent GC-MS, HPLC-UV, or gravimetric analysis

FAQ

What sampling media are compatible with the XQC-15E?
The sampler accepts standard 10–15 mL glass impingers, 37-mm mixed-cellulose ester (MCE) or polyvinyl chloride (PVC) filters for total dust, and 70-mm charcoal or silica gel sorbent tubes—configured via standard Luer-lock or screw-thread adapters.
How long can the unit operate on alkaline batteries?
Six AA alkaline cells provide approximately 4.5 hours of continuous operation at 1.0 L/min; Ni-Cd rechargeable packs extend runtime to ~8 hours under identical conditions.
Is the flow rate adjustable during sampling?
Yes—the built-in needle valve allows real-time manual adjustment between 0.1 and 1.5 L/min; flow is verified using the integrated rotameter calibrated to 2.5 grade per JJG 640-2004 (Chinese national metrological verification regulation).
Does the XQC-15E meet international regulatory requirements for workplace monitoring?
While not CE-marked or FDA-listed, its performance parameters align with NIOSH, ISO, and EN standards referenced in EU Directive 2004/37/EC (carcinogens and mutagens) and UK HSE MDHS 14/3 guidance for respirable dust sampling.
Can the instrument be used for explosive atmospheres?
No—the XQC-15E is not intrinsically safe or ATEX-certified; for hazardous locations, consult the manufacturer’s dedicated explosion-proof variants (e.g., XQC-15E-Ex series).