KJT-PCG-O2 Automatic Gas Pressure Control and Oxygen Concentration Measurement System
The KJT-PCG-O2 system is engineered to manage the internal pressure of a furnace tube while simultaneously measuring oxygen concentration within the gas environment. This dual-functionality is essential for processes requiring precise atmosphere control and gas composition monitoring, such as material synthesis or chemical analysis under controlled conditions.
The system operates in two distinct modes controlled by a switch: vacuum mode and gas composition measurement mode. When the SP switch is pressed, the system maintains a vacuum state inside the furnace tube, regulated by an INFICON Pirani capacitance diaphragm pressure gauge and an automatic pressure controller with dual solenoid valves. Releasing the SP switch transitions the system to near atmospheric pressure (approximately 1 bar) for oxygen concentration measurement using a trace oxygen analyzer capable of detecting 0 to 1000 ppm.
Key Features
- Dual operational modes: vacuum control and gas composition measurement.
- Pressure measurement via INFICON Pirani capacitance diaphragm gauge with ETL certification.
- Trace oxygen analyzer for O2 concentration from 0 to 1000 ppm.
- Automatic gas pressure controller equipped with dual solenoid valves for precise regulation.
- Adjustable pressure settings between 0.5 to 740 torr (vacuum) and 761 to 770 torr (analysis) via DPDS software.
- Includes precision mass flow controller with digital display for flow rate management.
- Compatible with 110-220 VAC power supply and consumes 30 W.
Technical Specifications
| Parameter | Specification |
|---|---|
| Power Supply | 110-220 VAC |
| Power Consumption | 30 W |
| Pressure Measurement | INFICON Pirani capacitance diaphragm gauge (ETL certified) |
| Oxygen Concentration Range | 0 – 1000 ppm |
| Pressure Range Vacuum Mode | 0.5 – 740 torr (adjustable) |
| Pressure Range Composition Mode | 761 – 770 torr (adjustable) |
| Control Components | Mass flow controller with digital display, dual solenoid valves, KF25 and 1/4 solenoid valves |
| Additional Equipment | Cold trap, mechanical vacuum pump |
Typical Applications
Ideal for laboratory and industrial furnace systems requiring precise atmosphere pressure control and oxygen level monitoring. Suitable for chemical analysis, material processing under vacuum or controlled gas environments, and research applications involving gas flow rate and composition adjustments.
Configuration & Operating Notes
The system includes a precision mass flow controller, pressure gauge, oxygen analyzer, solenoid valves, cold trap, and vacuum pump. Users must purchase the INFICON cable (ordering #303-333) separately for computer interface. The pressure set points and hysteresis for the SP switches can be adjusted using DPDS software available from INFICON.
Important safety notes: Never vacuum or pressurize the oxygen sensor to avoid irreversible damage. Avoid exposing the sensor to ambient air for more than five minutes. The system’s pressure ranges are configurable to suit specific experimental requirements.
