Product appearance varies by configuration.
Fluid Control Solutions (FCS)
QT620 Series Three-Gas Mixer
The QT620 Series continuously blends three nonflammable, noncorrosive gases. It displays CO₂ and O₂ concentrations and supports separate high and low concentration alarms. A buffer tank helps maintain a consistent blend as demand changes. Confirm the analysis methods, tank configuration, and enclosure rating for the selected model.
- Blend Accuracy (7%~15% Component Concentration)
- Relative accuracy ±2%
- Blend Accuracy (1%~7% Component Concentration)
- Absolute accuracy ±0.35%
- Input Pressure
- 0.7-1.0MPa
- Output Pressure
- 0.05-0.4MPa
Configuration and suitability confirmed for your application.
Model Specifications
| QT620-50 | 50 m³/h, Ar/N₂/CO₂/O₂/He options, 250 L buffer tank |
| QT620-100 | 100 m³/h, Ar/N₂/CO₂/O₂/He options, 250 L buffer tank |
Performance Specifications
| Blend Accuracy (Component Concentration 7%~15%) | Relative accuracy ±2% |
| Blend Accuracy (Component Concentration 1%~7%) | Absolute accuracy ±0.35% |
| Input Pressure | 0.7~1.0MPa |
| Output Pressure | 0.05~0.4MPa |
| Analyzer Type | Built-in infrared gas analyzer; confirm O₂ sensing configuration |
| Measured Components | Real-time CO₂ and O₂ concentration display |
Features
| Alarm Function | CO₂/O₂ high/low concentration alarms with audible/visual alerts and RS232 output |
| Data Recording | Digital recording of concentration trends |
| Buffer Tank Design | Buffer tank maintains consistent delivery as demand changes |
| Enclosure | Weather-resistant enclosure; confirm rating for outdoor installation |
Measurement conditions & notes
- An analyzer is standard on models marked -W.
- Three-gas blends using combinations of 5 gases: Ar, N₂, CO₂, O₂, and He.
- Displays CO₂ and O₂ concentration; confirm the analyzer configuration and O₂ measurement method.
- Separate high and low alarm limits can be set for CO₂ and O₂.
- Digital concentration logging supports process evaluation.
- The buffer tank supports consistent delivery at both high and low demand.
- Confirm enclosure rating and site conditions before outdoor installation.
- Pressure controllers and solenoid valves regulate system operation.
- Applications include welding and other processes that require a three-gas blend.
Confirm fluid compatibility, materials, connections, and available configuration with our team before ordering.
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