Atotech MFC330 Thermal Mass Flow Controller
| Brand | Atotech |
|---|---|
| Origin | Jiangsu, China |
| Manufacturer Type | Authorized Distributor |
| Product Type | Thermal Mass Flow Controller |
| Model | Atotech MFC330 Micro-Flow Gas Mass Flow Controller |
| Flow Range Options | 0–2, 10, 20, 50, 100, 300, 500 sccm |
| Accuracy | ±1% FS |
| Repeatability | ±0.2% FS |
| Linearity | ±0.2% FS |
| Control Range | 1–100% FS (1:100) |
| Measurement Range | 0.5–100% FS (1:200) |
| Response Time | <3 s |
| Warm-up Time | 5 min (T95), 30 min optimal |
| Valve Type | Normally Closed |
Overview
The Atotech MFC330 is a precision thermal mass flow controller engineered for stable, high-reproducibility gas flow regulation in low-flow applications. Based on the principle of constant-temperature anemometry (CTA), the MFC330 measures mass flow rate by detecting the heat transfer between a heated sensor element and the flowing gas—eliminating dependence on pressure and temperature variations for volumetric correction. Its core architecture integrates a capillary-tube-based thermal sensor, a precision bypass分流 system, and a high-bandwidth proportional control valve within a closed-loop feedback circuit. This design enables real-time comparison of measured flow against user-defined setpoints, with continuous dynamic adjustment to maintain target flow under fluctuating inlet pressure, ambient temperature shifts, or downstream load changes—critical for applications demanding metrological traceability and process stability.
Key Features
- Thermal mass flow sensing with capillary-tube sensor element for enhanced sensitivity at micro-flow ranges (down to 0.5% FS)
- Closed-loop proportional control architecture with normally closed solenoid valve, ensuring fail-safe operation during power loss
- Wide dynamic control range of 1–100% FS (1:100) and extended measurement capability from 0.5–100% FS (1:200)
- High repeatability (±0.2% FS) and linearity (±0.2% FS), validated per ISO 17025-accredited calibration protocols
- Rapid response time (<3 seconds) optimized for pulsed gas delivery, reaction initiation, and process ramping sequences
- Stable warm-up performance: T95 achieved in 5 minutes; full thermal equilibrium recommended after 30 minutes for GLP-compliant measurements
- Compatible with clean, dry gases including N₂, O₂, Ar, He, CO₂, H₂, and other non-corrosive, non-condensing gases (≥98% purity recommended)
Sample Compatibility & Compliance
The MFC330 is designed for use with chemically inert, particle-free, and moisture-free gas streams. It complies with general safety requirements for laboratory-grade gas handling equipment (IEC 61000-6-3 EMI immunity, IEC 61000-6-2 ESD robustness). While not certified for hazardous area use (e.g., ATEX/IECEx), it meets mechanical and electrical safety standards applicable to Class I, Division 2 environments when installed per manufacturer guidelines. Calibration certificates are traceable to NIM (National Institute of Metrology, China) standards. For regulated environments—including pharmaceutical process gas delivery or semiconductor tool purging—the device supports audit-ready documentation workflows when integrated with compliant SCADA or LIMS platforms.
Software & Data Management
The MFC330 supports analog (0–5 V / 0–10 V / 4–20 mA) and digital (RS-485 Modbus RTU) interfaces for seamless integration into automated systems. Optional PC software provides real-time flow monitoring, setpoint logging, and CSV export of time-stamped data streams. All configuration parameters—including zero offset, span calibration coefficients, and valve response tuning—are stored in non-volatile memory. When deployed in FDA-regulated settings, the controller can be operated under 21 CFR Part 11-compliant software environments that enforce electronic signature, audit trail, and role-based access control—provided the host system implements these features. No embedded firmware updates are required under normal operation; recalibration intervals are recommended annually or after 2,000 operating hours, whichever occurs first.
Applications
- Gas dosing in plasma etching and CVD tools (semiconductor fabrication)
- Precise carrier and reactant gas control in GC and GC-MS sample introduction systems
- Calibration gas generation for environmental air quality monitors (e.g., NOₓ, SO₂ analyzers)
- Controlled atmosphere management in fuel cell test stations and battery cycling chambers
- Low-flow purge and blanking in analytical spectroscopy (FTIR, Raman) optical paths
- Research-scale microreactor feed control for catalysis and kinetic studies
FAQ
What gases are compatible with the MFC330?
Clean, dry, non-corrosive gases with ≥98% purity—such as nitrogen, oxygen, argon, helium, carbon dioxide, and hydrogen—are supported. Aggressive or condensable gases (e.g., Cl₂, NH₃, solvent vapors) require consultation with technical support prior to use.
Is the MFC330 suitable for vacuum-side (downstream) flow control?
Yes—it operates effectively under sub-atmospheric backpressure conditions typical of vacuum-integrated processes, provided inlet pressure remains ≥1.5× outlet pressure to maintain laminar bypass flow and sensor accuracy.
Does the device include NIST-traceable calibration?
Each unit ships with a factory calibration certificate traceable to national standards (NIM); optional third-party ISO/IEC 17025 calibration with uncertainty reporting is available upon request.
Can multiple MFC330 units be synchronized for multi-gas blending?
Yes—via RS-485 Modbus network or synchronized analog input referencing, enabling coordinated flow ratio control across up to 32 devices in master-slave configurations.
What maintenance is required?
No routine maintenance is needed beyond periodic verification using certified flow standards. Filter replacement (inlet particulate filter, optional) is recommended every 12 months in non-laboratory environments.
