The MKS Instruments 647B8EON is a multi-channel gas controller engineered for precise flow regulation in semiconductor manufacturing, research, and industrial processes. This 4- or 8-channel instrument delivers stable gas delivery through advanced control algorithms and integrates master/slave configurations for external mass flow controller command and constant gas flow ratio pressure regulation. Front-panel setpoint adjustment and remote control via RS232 and IEEE 488 interfaces enable flexible system integration. The controller supports gas correction factors across multiple gas types and features comprehensive diagnostics for real-time troubleshooting.
– Technical Specifications
• Input voltage range: −0.5 to +5.5 V
• Output voltage range: −0.5 to +5.5 V
• Measurement error: ±1 digit
• Temperature drift (pressure channel): 0.075 %/°C maximum
• Channels: 4 or 8 configurable
• Housing: 19″ × 3U rack-mountable
• Rack depth: 245 mm (without connectors); 285 mm total depth (handles mounted)
• Weight: 5.0 kg (4-channel); 5.3 kg (8-channel)
– Key Features
• Multi-channel flow ratio and pressure control with constant gas flow ratio capability
• Master/slave operational modes for cascaded system architecture
• Gas correction factors for multiple gas species
• Zero adjustment functionality per channel
• LCD display with front-panel keyboard and key switch
• Rear connectors: RS232, IEEE 488, relays, video, and MFC (CH1–CH8)
• Braided shielded cables recommended; MKS Instruments cables specified for CE compliance
• Clean room compatible; rated for dry and heated room environments
– Typical Applications
• Semiconductor process gas delivery and blending
• Research and laboratory gas flow systems
• Industrial process control requiring multi-gas regulation
• Applications demanding master/slave pressure and flow coordination
– Compatibility & Integration
The 647B8EON integrates with MKS mass flow controllers and instrumentation ecosystems. Remote operation via RS232 and IEEE 488 protocols supports distributed control architectures. Cable compatibility extends across 647A, 647B, and 647C instrument families.
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