Zhonghuipu A-30PSAD Pure Oil-Free Fully Automatic Air Generator
| Brand | Zhonghuipu |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | Direct Manufacturer |
| Model | A-30PSAD |
| Output Flow | 0–22 L/min at 0.7 MPa (for nitrogen generator supply) |
| Output Pressure | 0–0.7 MPa (factory-set at 0.4 MPa) |
| Pressure Stability | < 0.003 MPa |
| Dew Point | ≤ −22 °C |
| Operating Environment | 5–40 °C, RH ≤ 85% |
| Power Consumption | 1200 W |
| Input Voltage | 220 V ±10% |
| Construction | 304 Stainless Steel Tanks & Filtration Components |
| Air Purity Class | ISO 8573-1 Class 2:2:2 (solid particles, water, oil) |
Overview
The Zhonghuipu A-30PSAD is a fully automatic, pure oil-free air generator engineered for continuous, high-reliability gas supply in analytical laboratories. It employs a dual-path pressure-regulated architecture based on a premium imported rocking-piston compressor—certified oil-free per ISO 8573-1—and integrates multi-stage desiccant drying via pressure swing adsorption (PSA) technology. Unlike conventional oil-lubricated compressors or bottled air systems, the A-30PSAD eliminates hydrocarbon contamination risk at the source, delivering consistent, instrument-grade air meeting stringent requirements for gas chromatography (GC), nitrogen generator feed, and other precision pneumatic applications. Its design prioritizes long-term stability, low maintenance, and seamless integration into regulated lab environments where trace-level oil carryover or dew point excursions could compromise detector sensitivity or column lifetime.
Key Features
- Pure oil-free compression: Imported rocking-piston compressor with ceramic-coated cylinders and PTFE seals ensures zero hydrocarbon emission—no inline coalescing filters required.
- Dual-pressure output architecture: Independent high-flow (up to 22 L/min @ 0.7 MPa) and low-noise GC-grade (up to 8 L/min @ 0.4 MPa) air streams, each regulated by dedicated precision pressure controllers.
- Advanced PSA drying system: Twin-tower desiccant beds with automatic regeneration cycle maintain dew point ≤ −22 °C continuously—eliminating manual desiccant replacement and enabling 7×24 unattended operation.
- Ultra-stable pressure delivery: Dual-stage mechanical + electronic pressure regulation achieves < 0.003 MPa pressure fluctuation—critical for minimizing baseline noise in FID, ECD, and TCD detectors.
- Corrosion-resistant construction: All wetted components—including primary and secondary storage tanks, piping manifolds, and filter housings—fabricated from electropolished 304 stainless steel for longevity and compliance with GLP/GMP cleanroom-compatible material standards.
- Integrated SMC-certified particulate filtration: Final-stage 0.01 µm sintered stainless steel filter meets ISO 8573-1 Class 2 particle specification (≤ 3 particles/m³ > 0.1 µm).
Sample Compatibility & Compliance
The A-30PSAD supplies compressed air compatible with all major GC manufacturers’ carrier and fuel gas requirements (e.g., Agilent, Thermo Fisher, Shimadzu, PerkinElmer). Its certified oil-free output satisfies ASTM D6304 Annex A1 criteria for hydrocarbon-free air used in moisture analysis and aligns with USP residual solvent testing prerequisites. The unit’s stable dew point and pressure performance support compliance with ISO/IEC 17025 clause 6.4.3 (environmental monitoring of test equipment) and facilitates audit readiness for FDA 21 CFR Part 11–governed data integrity workflows when paired with validated GC software platforms.
Software & Data Management
While the A-30PSAD operates as a standalone hardware system, its analog pressure and flow outputs (0–10 V / 4–20 mA optional) enable integration with laboratory building management systems (BMS) or centralized gas monitoring dashboards. Real-time pressure, temperature, and runtime hours are displayed on the front-panel OLED interface with non-volatile logging (10,000-event capacity). For regulated environments, optional RS-485 Modbus RTU communication supports remote status polling and alarm event capture—compatible with LabVantage, STARLIMS, and LabWare LIMS for automated maintenance scheduling and GLP-compliant audit trails.
Applications
- Primary air supply for flame ionization (FID), electron capture (ECD), and thermal conductivity (TCD) detectors in gas chromatography.
- Feed gas source for membrane- or PSA-based nitrogen generators requiring dry, oil-free intake air.
- Instrument air for autosampler purge, valve actuation, and pneumatic sample introduction systems.
- Calibration gas blending systems requiring stable, contaminant-free auxiliary air streams.
- Environmental monitoring labs conducting EPA Method 8260/8270 analyses where background hydrocarbon interference must be excluded.
FAQ
Is the A-30PSAD suitable for use with mass spectrometry (MS) detectors?
No—it is not rated for MS-grade air due to absence of sub-ppb hydrocarbon removal; it is validated for GC detector-grade air only.
What maintenance intervals are recommended for the PSA desiccant beds?
Zero scheduled replacement: the twin-tower PSA system regenerates automatically during normal operation; only annual visual inspection of inlet particulate filter is required.
Can output pressure be adjusted in the field?
Yes—via calibrated front-panel potentiometer; factory default is 0.4 MPa for GC use, but range extends to 0.7 MPa for nitrogen generator feed.
Does the unit meet CE or UL safety certification?
It complies with GB 4793.1–2019 (Chinese equivalent of IEC 61010-1) and carries CCC mark; CE/UL certification is available upon request for export configurations.
How does the A-30PSAD handle ambient humidity fluctuations above 85% RH?
Internal condensate traps and pre-dryer heat exchangers mitigate liquid water ingress; however, sustained operation above 85% RH requires external dehumidification of the intake air stream per ISO 8573-1 Annex B guidance.
