KY-200 Gas Sampler with Temperature-Controlled Injection Loop

Overview

The KY-200 Gas Sampler is an engineered temperature-stabilized gas introduction system designed for precise, repeatable delivery of gaseous samples into analytical instruments—primarily gas chromatographs (GC), GC-MS systems, and online process analyzers. It operates on a loop-based injection principle: a fixed-volume sampling loop is pressurized with the target gas stream, thermally equilibrated within a precisely controlled oven, and then rapidly transferred to the instrument’s inlet via pneumatically actuated valves. This architecture eliminates manual syringe handling, minimizes carryover, and ensures consistent sample mass transfer—critical for quantitative trace gas analysis, calibration gas delivery, and method validation in regulated environments.

Key Features

• Integrated temperature-controlled oven with PID regulation (range: ambient +5 °C to 150 °C, stability ±0.5 °C)
• Stainless steel 316 sampling loop (standard volume: 0.5–5.0 mL; custom volumes available upon request)
• High-integrity pneumatic valve manifold (Norgren or SMC actuators) rated for continuous operation up to 10 bar working pressure
• Gas-tight fittings compliant with ISO 8434-1 (DIN 2353) and Swagelok®-compatible sealing geometry
• Front-panel digital interface with real-time oven temperature display, valve status indicators, and manual override mode
• RS-485 Modbus RTU communication port for integration into SCADA or LIMS-controlled laboratory automation workflows

Sample Compatibility & Compliance

The KY-200 accommodates non-corrosive and mildly corrosive gases including N₂, O₂, CO, CO₂, CH₄, H₂, air, natural gas simulants, and certified calibration blends (e.g., EPA TO-14/TO-15 standards). It is not rated for halogenated compounds, H₂S >10 ppm, or Cl₂ without optional passivation treatment. All wetted materials—316SS loop, EPDM or Kalrez® seals (configurable), and stainless steel tubing—meet ASTM F519 for hydrogen embrittlement resistance and comply with USP material classification for pharmaceutical-grade gas handling. The unit supports GLP/GMP documentation requirements through optional audit-trail-enabled firmware (IEC 62304 Class B software lifecycle compliance).

Software & Data Management

While the base KY-200 operates as a standalone hardware module, optional firmware upgrade enables full remote control via Keyuan’s KYSampler Control Suite (Windows/Linux). This application provides scheduled injection sequencing, temperature ramp profiling, cycle logging with timestamps, and CSV export of operational metadata—including loop fill pressure, dwell time, oven setpoint deviation, and valve actuation count. All data logs are timestamped with UTC sync and support FDA 21 CFR Part 11-compliant electronic signatures when deployed with domain-authenticated Windows Active Directory integration.

Applications

• Automated calibration of environmental air monitoring systems (e.g., EPA Method 25A, EN 14662)
• Reproducible introduction of standard gas mixtures into GC-TCD/FID for detector linearity verification
• In-line sampling of biogas streams in anaerobic digestion facilities (ASTM D5504 compliance support)
• Controlled headspace injection for volatile organic compound (VOC) analysis in soil/water matrices
• Method transfer between laboratories requiring identical gas delivery dynamics (ISO/IEC 17025 accredited labs)

FAQ

What is the maximum operating pressure rating of the KY-200 sampling loop?
The standard configuration is rated for continuous service at ≤10 bar (145 psi) with optional high-pressure variants available up to 20 bar.
Can the KY-200 be integrated with third-party GC systems from Agilent, Thermo Fisher, or Shimadzu?
Yes—via dry-contact relay outputs or Modbus RTU protocol; hardware trigger timing diagrams and register maps are provided in the Integration Manual v3.2.
Is temperature uniformity across the loop verified during factory calibration?
Yes—each unit undergoes thermal mapping per ASTM E742 using six calibrated PT100 sensors; a certificate of temperature uniformity (±0.3 °C max deviation at 100 °C) is included.
Does the KY-200 meet CE marking requirements for EMC and LVD?
Yes—certified to EN 61326-1:2013 (EMC) and EN 61010-1:2010 (safety); Declaration of Conformity supplied with shipment.
What maintenance intervals are recommended for long-term reliability?
Valve actuator lubrication and seal inspection every 6 months; loop cleaning with inert gas purge recommended after exposure to condensable or particulate-laden streams.