The Parker MIDIGAS Trio, model MIDIGAS4NCBLA, is a pressure swing adsorption (PSA) nitrogen generator that produces nitrogen from a standard compressed-air supply. It provides a continuous on-demand gas source and offers a safe, reliable, and cost-effective alternative to high-pressure cylinders, liquid nitrogen vessels, and bulk gas storage. Depending on the selected flow rate, the MIDIGAS4 can deliver nitrogen with an equivalent purity of approximately 95% to 99.999%, making it suitable for laboratory installations, including LC/MS applications requiring a stable nitrogen supply.
Key Features
- Produces nitrogen from a standard compressed-air supply
- PSA separation using carbon molecular sieve technology
- Continuous on-demand nitrogen production
- Adjustable balance between nitrogen purity and flow rate
- Equivalent nitrogen purity from approximately 95% to 99.999%
- Built-in oxygen analyzer for continuous purity monitoring
- Automatic economy mode
- Digital and analog outputs for remote monitoring
- Integrated alarm and diagnostic functions
- Modular design supporting multi-bank installations
- Capacity expansion and full standby configurations available
- Compact construction with low routine maintenance requirements
- Carbon molecular sieve service life exceeding ten years when maintained according to Parker recommendations
Technical Specifications
Nitrogen Flow by Purity
- 10 ppm O₂, approximately 99.999% N₂: 1.2 m³/h
- 100 ppm O₂, approximately 99.99% N₂: 2.4 m³/h
- 250 ppm O₂, approximately 99.975% N₂: 3.2 m³/h
- 500 ppm O₂, approximately 99.95% N₂: 3.9 m³/h
- 0.1% O₂, approximately 99.9% N₂: 4.7 m³/h
- 0.5% O₂, approximately 99.5% N₂: 6.9 m³/h
- 1% O₂, approximately 99% N₂: 8.5 m³/h
- 2% O₂, approximately 98% N₂: 11.6 m³/h
- 3% O₂, approximately 97% N₂: 14.3 m³/h
- 4% O₂, approximately 96% N₂: 16.7 m³/h
- 5% O₂, approximately 95% N₂: 18.8 m³/h
Performance values are based on an inlet pressure of 7 bar(g) and an ambient temperature of 20–25 °C.
Pressure and Air Supply
- Compressed-air inlet pressure: 6 to 13 bar(g)
- Typical nitrogen outlet pressure: approximately 5.4 to 6.0 bar(g), depending on purity and flow setting
- Required inlet-air quality: ISO 8573-1:2010 Class 2.2.2
- Required class with high oil-vapor content: 2.2.1
Electrical Requirements
- Supply voltage: 115/230 V AC ±10%
- Frequency: 50/60 Hz
- Power consumption: 80 W
- Fuse: 3.15 A
Port Connections
- Compressed-air inlet: G 1/2"
- N₂ outlet to buffer vessel: G 1/2"
- N₂ inlet from buffer vessel: G 1/2"
- Nitrogen outlet: G 1/2"
Operating Conditions
- Ambient temperature: 5 to 50 °C
- Maximum relative humidity: 80% at temperatures up to 31 °C
- Protection rating: IP20 / NEMA 1
- Maximum operating altitude: 2,000 m
- Noise level: <80 dB(A)
MIDIGAS4 Dimensions and Weight
- Height: 1,034 mm
- Width: 450 mm
- Depth: 640 mm
- Weight: 145 kg
Operating Benefits
- Eliminates routine handling of high-pressure nitrogen cylinders
- Reduces the risk of gas-supply interruption
- Minimizes delivery administration and logistics
- Automatic economy mode reduces energy and compressed-air consumption
- Continuous oxygen monitoring helps maintain the selected gas purity
- Multi-bank installation supports capacity expansion or standby operation
- Modular architecture allows the system to be upgraded as nitrogen demand increases
Typical Applications
- Laboratory nitrogen supply
- LC/MS and other mass spectrometry applications
- Pharmaceutical and chemical laboratories
- Food packaging and blanketing
- Controlled atmospheres for electronics manufacturing
- Electronics soldering
- Fire and explosion prevention through oxygen reduction
- Selective laser sintering
- Process inerting and blanketing
Required nitrogen flow, pressure, and purity should be verified against the specifications of the particular LC/MS instrument before connection.
