Junray ZR-5410A Portable Multi-Range Gas, Dust, and Stack Particulate Sampler Calibration System

Overview

The Junray ZR-5410A Portable Multi-Range Gas, Dust, and Stack Particulate Sampler Calibration System is an integrated primary-standard flow calibration instrument engineered for field and laboratory verification of environmental air sampling devices. It operates on the principle of volumetric displacement measurement—leveraging a certified rotary lobe (Roots-type) flowmeter as its core transducer—to deliver traceable, high-reproducibility flow readings across low-, medium-, and high-flow regimes typical in ambient air monitoring, occupational hygiene sampling, and stack emission testing. Unlike secondary electronic calibrators, the ZR-5410A provides direct volumetric reference traceable to national metrological standards, satisfying the fundamental requirement for ISO/IEC 17025-accredited calibration laboratories and regulatory compliance workflows. Its design conforms to the metrological hierarchy defined in JJG 586–2006 (Verification Regulation for Soap Film Flowmeters) and HJ/T 368–2007 (Technical Requirements and Test Methods for Orifice Flowmeters Used in TSP Sampler Calibration), ensuring alignment with China’s statutory environmental monitoring instrumentation verification framework.

Key Features

• Tri-range flow calibration capability: supports flow rates from 10 mL/min to 1,200 L/min (adjustable via internal flow-path configuration), enabling validation of personal aerosol samplers, low-flow VOC monitors, mid-range PM_2.5/PM₁₀ samplers, and high-volume stack particulate samplers.
• Integrated Roots-type positive displacement flowmeter with factory-certified calibration certificate (NIST-traceable or CNAS-accredited), providing direct volumetric reference without reliance on inferential sensor technologies.
• Real-time environmental parameter acquisition: built-in temperature and barometric pressure sensors (±0.3 °C, ±0.5 kPa accuracy) enable automatic standard-cubic conversion per ISO 10780 and EPA Method 2, with optional manual input for controlled-condition validation.
• Field-deployable architecture: ruggedized aluminum housing (IP54 rated), dual power mode (AC adapter + rechargeable Li-ion battery delivering ≥8 hours continuous operation at 500 L/min), and ergonomic carry handle optimized for mobile calibration teams.
• On-device data management: 32 GB internal flash memory stores >100,000 calibration records with timestamp, flow setpoint, measured value, environmental conditions, operator ID, and pass/fail status per user-defined tolerance limits.
• Comprehensive local interface: 128×64 dot-matrix monochrome LCD with backlight, intuitive menu navigation, and real-time graphical display of flow stability trend during calibration cycles.

Sample Compatibility & Compliance

The ZR-5410A is compatible with all common gas and particulate sampling platforms requiring volumetric flow verification—including but not limited to SKC AirCheck pumps, Gilian GilAir series, Casella Apex, Thermo Scientific PDM series, and domestic equivalents such as Qingdao QL-2A and Wuhan Tianhong TH-150. It meets functional requirements specified in ISO 12103-1 (test dust generation), ISO 9001 (calibration process control), and supports audit readiness for GLP and GMP environments where documented metrological traceability is mandatory. While not inherently compliant with FDA 21 CFR Part 11, its data export functionality (via USB-C) enables integration into validated electronic lab notebook (ELN) systems when paired with appropriate procedural controls.

Software & Data Management

Calibration data are exportable in CSV and XML formats via USB-C interface for post-processing in Excel, LabVIEW, or LIMS platforms. The embedded firmware supports user-configurable calibration protocols—including single-point verification, multi-point linearity checks, and drift assessment over time—with configurable pass/fail thresholds per flow range. Optional PC-based calibration management software (Junray CalSuite v3.2) provides automated report generation compliant with JJG 586–2006 Annex B templates, electronic signature capture, and audit trail logging meeting ISO/IEC 17025 Clause 7.7 requirements.

Applications

• Periodic verification of low-flow (<500 mL/min) personal sampling pumps used in occupational exposure assessment (e.g., OSHA ID-121, NIOSH Method 0500).
• Annual recalibration of medium-flow (1–30 L/min) ambient PM_2.5/PM₁₀ samplers deployed by provincial environmental monitoring centers.
• Pre- and post-field deployment checks for high-volume (≥1 m³/min) stack particulate samplers operating under EPA Method 5 or ISO 9096 conditions.
• Supporting metrology labs performing third-party verification services under CNAS accreditation scope.
• Training and proficiency testing for QA/QC personnel in environmental testing organizations.

FAQ

Does the ZR-5410A require annual recalibration by an external metrology lab?
Yes. While the unit ships with a manufacturer-issued calibration certificate valid for 12 months, ISO/IEC 17025 and JJG 586–2006 mandate periodic independent verification using higher-tier standards—typically performed by provincial metrology institutes or CNAS-accredited providers.
Can the device calibrate mass flow controllers (MFCs) or only volumetric samplers?
It validates volumetric flow output only. For MFCs requiring mass flow traceability, users must apply appropriate gas composition and compressibility corrections externally, as the ZR-5410A does not incorporate thermal mass flow compensation algorithms.
Is firmware update supported in the field?
Yes—firmware upgrades are delivered via signed .bin files through the USB-C port and require password-protected administrative access to prevent unauthorized modification.
What is the uncertainty budget for flow measurement at 100 L/min?
At 100 L/min, the expanded uncertainty (k=2) is ≤±1.2% of reading, derived from combined contributions of meter repeatability, temperature/pressure sensor error, and volumetric expansion correction terms per ISO 5167-1 Annex C methodology.