Junray ZR-3715 Integrated Multi-Function Flue Gas Sampler (Model A: Dual-Channel Solution Absorption / Model B: Dual-Channel VOCs Sampling)
| Brand | Junray |
|---|---|
| Origin | Shandong, China |
| Manufacturer Type | OEM Producer |
| Product Category | Domestic |
| Model | ZR-3715 |
| Instrument Type | Portable Flue Gas Analyzer |
| Indication Error | ±2.5% |
| Repeatability | ±2% |
| Measured Parameter | VOCs |
Overview
The Junray ZR-3715 Integrated Multi-Function Flue Gas Sampler is an engineered field-deployable instrument designed for simultaneous flue gas sampling and stack operating condition monitoring in stationary emission sources. It operates on the principle of controlled volumetric aspiration using precision diaphragm pumps, combined with real-time measurement of temperature, pressure, velocity, and humidity—enabling accurate isokinetic sampling per regulatory requirements. The device integrates an S-type Pitot tube with rotational and modular mounting capability, allowing dynamic alignment with varying duct geometries (circular, rectangular, or irregular cross-sections) without mechanical reconfiguration. Its dual-channel architecture supports parallel sampling workflows—either two independent solution absorption trains (Model A) or dual thermal-desorption tubes for volatile organic compounds (VOCs) (Model B)—while concurrently recording flue gas parameters including static/dynamic pressure, stack temperature, and optional O2 concentration when equipped with an electrochemical oxygen sensor.
Key Features
- Rotatable, detachable S-type Pitot tube with adjustable angular positioning for optimal isokinetic sampling across diverse duct configurations and flow profiles.
- Uniformly heated sampling line (standard 120 °C, configurable up to 180 °C) minimizes condensation-induced analyte loss and preserves sample integrity during transport from stack to collector.
- Programmable sampling flow range: 10–200 mL/min, digitally stabilized via closed-loop mass flow control with integrated pressure compensation.
- Two operational modes: (1) Standalone stack condition measurement (velocity, temperature, differential pressure, humidity); (2) Concurrent VOCs adsorption sampling + real-time flue gas parameter logging.
- High-stability capacitive humidity sensor (imported, dew point range −40 to 90 °C), offering fast response (<3 s), low hysteresis, and long-term calibration stability under high-moisture flue environments.
- 7-inch color capacitive touchscreen interface with intuitive icon-driven navigation, multi-language support (English default), and on-device data review with time-stamped event logs.
- Onboard data storage (≥10,000 records) with USB export capability and optional Bluetooth-enabled thermal printer compatibility (printer sold separately).
Sample Compatibility & Compliance
The ZR-3715 meets the physical and metrological requirements for sampling and characterization of gaseous emissions from industrial stacks, incinerators, and combustion facilities. It supports standard sampling media including silica gel impingers (for SO2, NOx, HCl), Tenax-TA/Carbopack B dual-bed sorbent tubes (per HJ 734-2014), and quartz fiber filters for particulate matter co-sampling. All hardware and firmware comply with national verification and performance standards: GB/T 16157-1996 (isokinetic sampling methodology), GB/T 11605-2005 (humidity measurement accuracy), HJ/T 47-1999 (technical specifications for flue gas samplers), and JJG 1169-2019 (verification procedures for indication error and repeatability). The instrument’s measurement uncertainty budget aligns with ISO/IEC 17025 traceability frameworks when used with NIST-traceable calibration gases and certified reference materials.
Software & Data Management
Data acquisition and configuration are managed through embedded firmware compliant with GLP principles: all measurements include automatic timestamping, operator ID entry (optional), and audit trail logging for critical parameters (flow rate, temperature, pressure, sampling duration). Raw data exports as CSV files via USB mass storage mode, preserving column headers, units, and metadata (e.g., “Sampling_Mode”, “Tube_ID”, “Isokinetic_Ratio_Calculated”). No proprietary software is required for data retrieval or report generation. Firmware supports remote updates via secure USB firmware loader and includes built-in self-diagnostic routines for pump status, heater continuity, sensor health, and battery voltage monitoring. Calibration records—including date, technician ID, standard gas concentrations, and deviation values—are stored separately and exportable for internal QA audits or regulatory submission.
Applications
The ZR-3715 serves environmental monitoring agencies, third-party testing laboratories, and industrial EHS departments conducting routine stack testing and compliance verification. Typical use cases include: VOCs speciation campaigns targeting benzene, toluene, ethylbenzene, xylenes (BTEX), and C2–C12 aliphatics per HJ 734-2014; sulfur dioxide and nitrogen oxide quantification using impinger-based wet chemistry; moisture content assessment in biomass-fired boilers; and pre-compliance screening for MACT (Maximum Achievable Control Technology) or EU IED (Industrial Emissions Directive) reporting. Its portability and rapid setup make it suitable for short-duration surveys, emergency response deployments, and educational field exercises requiring hands-on flue gas characterization.
FAQ
Does the ZR-3715 support isokinetic sampling correction in real time?
Yes—the instrument calculates and displays instantaneous isokinetic ratio (Qactual/Qrequired) based on measured velocity, cross-sectional area, and user-input target flow, enabling immediate manual adjustment.
Can the device be calibrated in-house using standard gases?
Yes—flow calibration is performed using a primary-standard dry calibrator (e.g., Brooks 5850E or equivalent); gas sensor calibration (O2, if installed) follows manufacturer-recommended span/gas protocols with certified zero and span gases.
What is the battery life under continuous operation?
With fully charged Li-ion battery pack (14.8 V, 6.6 Ah), typical runtime is ≥4.5 hours at 100 mL/min flow and 120 °C heating; runtime extends to >8 hours in non-heated measurement-only mode.
Is the firmware validated for 21 CFR Part 11 compliance?
While the system supports audit trails and electronic signatures via external LIMS integration, native Part 11 compliance requires site-specific validation documentation and procedural controls—not inherent firmware certification.
Are replacement Pitot tubes and sorbent tubes available as consumables?
Yes—Junray supplies OEM-certified S-type Pitot assemblies, glass impingers, and pre-packed Tenax-TA/Carbopack B dual-bed tubes with lot-specific certificate of analysis.
