Zhongyi Yusheng AS-60G Automatic Gas Autosampler

Overview

The Zhongyi Yusheng AS-60G Automatic Gas Autosampler is an engineered solution for high-throughput, unattended gas-phase sample introduction into gas chromatography (GC) systems. Designed around a precision pneumatic valve manifold and thermally stabilized flow path, the AS-60G operates on a fixed-loop quantitative injection principle—leveraging calibrated stainless-steel or fused-silica sample loops (e.g., 0.5–5 mL) to deliver reproducible volumetric dosing under controlled pressure and temperature conditions. Its architecture eliminates manual intervention in routine gas analysis workflows, supporting method-defined sequences for up to 60 discrete samples per batch. The system maintains thermal integrity across critical components—including the multi-port selection valve, sample loop, and transfer lines—ensuring consistent vapor-phase transport without condensation artifacts, particularly for humid, low-boiling, or trace-level volatile organic compounds (VOCs) and permanent gases (e.g., O₂, N₂, CO, CH₄).

Key Features

• Thermally regulated valve manifold and sample pathway (ambient to 200 °C), minimizing adsorption and phase separation in moisture-sensitive or high-boiling analytes
• Automated dual-stage cleaning cycle: carrier-gas purging before and after each injection to eliminate carryover and ensure inter-sample integrity
• Intuitive Windows-based control software with drag-and-drop sample mapping, customizable sequence templates, and audit-trail-enabled method logging
• Integrated flow control module for sampling devices—compatible with gas-tight glass syringes (1–10 mL), pre-evacuated stainless-steel canisters, and flexible polymer bags (e.g., Tedlar®)
• Hardware-level fault detection with real-time status monitoring and audible/visual alerts for valve actuation failure, temperature deviation, or pressure loss
• TTL and RS-232 interfaces for seamless synchronization with GC oven start commands, detector triggers, and data system acquisition signals

Sample Compatibility & Compliance

The AS-60G accommodates gaseous matrices across environmental, petrochemical, pharmaceutical, and industrial hygiene applications—including ambient air, stack emissions, biogas, headspace vapors, and calibration standards. It supports EPA Method TO-14A/TO-15-compliant sampling when paired with appropriate canisters and passivation protocols. All wetted surfaces are electropolished stainless steel or inert fluoropolymer-lined, meeting USP material compatibility requirements. The firmware implements timestamped event logging and user-access controls aligned with GLP and 21 CFR Part 11 readiness—enabling electronic signatures, operator authentication, and immutable sequence history for regulatory audits.

Software & Data Management

The AS-60G is operated via dedicated GC-integrated software that runs natively on Windows 10/11 platforms. It enables full method definition—including loop fill time, pressurization duration, injection dwell, and purge cycles—saved as encrypted .asm files. Sample metadata (e.g., ID, location, concentration reference, analyst, date/time stamp) is embedded directly into the GC data file header upon acquisition. Raw instrument logs—including valve position timestamps, heater setpoint deviations (>±2 °C), and pressure transducer readings—are archived in CSV format for traceability. Software updates are delivered via secure HTTPS channel with SHA-256 signature verification.

Applications

• Continuous monitoring of VOC emissions from industrial fenceline sites using canister-based grab sampling
• High-volume breath analysis in clinical research laboratories (e.g., acetone, isoprene, hydrogen sulfide quantification)
• Quality control of liquefied petroleum gas (LPG) and natural gas composition per ASTM D1945 and ISO 6974
• Method validation studies requiring >500 consecutive injections with ≤3% RSD for retention time and peak area
• Automated headspace analysis of residual solvents in pharmaceutical packaging per ICH Q2(R2) guidelines

FAQ

What types of gas sampling vessels are supported?
The AS-60G accepts standard 6- and 11-mL SUMMA®-electropolished canisters, 10-mL gas-tight glass syringes with Luer-lock fittings, and 1–5 L Tedlar® or FlexFoil® bags equipped with integrated septa.
Can the AS-60G be integrated with third-party GC systems?
Yes—it provides TTL trigger outputs and RS-232 serial communication for bidirectional handshake with Agilent, Thermo Fisher, Shimadzu, and PerkinElmer GC platforms running OpenLAB, Chromeleon, or GCMSsolution.
Is loop volume configurable?
Loop size is hardware-defined; users select from factory-installed options (0.5, 1, 2, or 5 mL) during purchase—no field modification is permitted to maintain volumetric certification.
How is system performance verified?
A built-in diagnostic mode executes automated valve timing checks, thermal ramp validation, and pressure decay tests; results are exportable as PDF reports compliant with ISO/IEC 17025 internal verification requirements.