Zhonghuipu A-30PSA Oil-Free Fully Automatic Air Generator

Overview

The Zhonghuipu A-30PSA Oil-Free Fully Automatic Air Generator is an engineered solution for laboratories requiring continuous, high-purity compressed air without oil contamination or manual intervention. It employs pressure swing adsorption (PSA) technology to dehydrate and purify compressed air in real time, delivering a stable output with a dew point of ≤ −40 °C — suitable for demanding analytical applications such as gas chromatography (GC), GC–MS, nitrogen generator feed gas, and instrument air supply for FTIR, AA, and ICP systems. Unlike oil-lubricated compressors, the A-30PSA integrates a Thomas (USA) oil-free rocking piston compressor, eliminating risk of hydrocarbon carryover and ensuring compliance with ISO 8573-1 Class 1:2:1 (solid particles, water, oil) for instrument-grade air. Its robust architecture supports unattended 7×24 operation under ambient conditions of 5–40 °C and relative humidity <80%.

Key Features

• Oil-free compression core: Thomas (USA) rocking piston compressor ensures zero hydrocarbon contamination and extended service life without lubricant maintenance.
• Integrated dual-stage pressure regulation: Maintains output pressure stability within ±0.02 MPa across the full 0–0.5 MPa range, minimizing fluctuations during dynamic load changes.
• PSA-based drying system: Utilizes molecular sieve beds with automatic cyclic regeneration; no consumable desiccant replacement required for ≥12 months under typical lab usage.
• Multi-stage filtration: SMC (Japan) coalescing and particulate filters remove liquid aerosols and particles <0.01 µm; stainless-steel (304) and aluminum alloy housings prevent corrosion and ensure long-term integrity.
• Intelligent microcontroller supervision: Real-time monitoring of flow, pressure, temperature, and system status; automatic shutdown on overpressure, overcurrent, or air leakage detection to protect compressor and downstream equipment.
• Acoustic optimization: Compressor housed in a dedicated sound-dampening enclosure; operational noise level maintained below 62 dB(A) at 1 m distance.

Sample Compatibility & Compliance

The A-30PSA delivers instrument-grade air compatible with all major gas chromatography detectors (FID, TCD, ECD, NPD), mass spectrometer auxiliary gas supplies, and pneumatic sample handling systems. Its certified particle-free, oil-free, and ultra-dry output meets ISO 8573-1:2010 Class 1 (particles), Class 2 (water), and Class 1 (oil) specifications. The unit complies with IEC 61000-6-3 (EMC emission standards) and IEC 61000-6-2 (immunity), and its electrical design conforms to GB 4793.1–2019 (China’s safety standard for laboratory equipment). While not intrinsically rated for hazardous locations, it is suitable for general laboratory environments operating under GLP/GMP-aligned workflows where documented air quality traceability is required.

Software & Data Management

The A-30PSA operates via embedded firmware with no external PC dependency. All operational parameters — including real-time flow rate (L/min), outlet pressure (MPa), dew point estimate, cumulative runtime, and fault logs — are displayed on the front-panel LCD interface. Event-triggered alerts (e.g., filter saturation warning, thermal overload) are stored with timestamps in non-volatile memory for audit review. Although the unit lacks Ethernet or USB connectivity, its event log supports manual export via RS-232 serial port (optional adapter) for integration into centralized lab asset management systems. Firmware updates are performed offline using standardized UART protocols, ensuring compatibility with FDA 21 CFR Part 11 requirements when deployed alongside validated electronic record systems.

Applications

• Primary air source for GC and GC–MS carrier gas support systems (e.g., nitrogen generators requiring clean, dry feed air).
• Supply air for flame ionization detectors (FID), where hydrocarbon-free air prevents baseline drift and detector contamination.
• Pneumatic actuation in automated sample introduction modules, autosamplers, and valve sequencing controllers.
• Cleanroom-compatible air for optical alignment stations, laser cavity purging, and precision weighing environments.
• Backup or primary air supply in QA/QC labs performing ASTM D6299, USP , or ISO/IEC 17025-accredited testing where documented air purity is auditable.

FAQ

What is the expected service life of the PSA molecular sieve under continuous operation?
With proper inlet filtration and ambient conditions within specification, the PSA beds maintain dew point performance ≤ −40 °C for ≥12 months before scheduled regeneration or replacement.
Does the A-30PSA require external cooling or ventilation?
Yes — the unit must be installed in a well-ventilated area with ≥30 cm clearance on all sides; ambient temperature must remain between 5 °C and 40 °C to ensure thermal stability of the compressor and adsorption cycle efficiency.
Can the output pressure be calibrated or adjusted externally?
Output pressure is regulated via two independent mechanical regulators; fine-tuning is possible using the front-panel adjustment knob, and factory calibration certificates are provided with each unit.
Is the A-30PSA compatible with ISO/IEC 17025 internal audit requirements?
Yes — its built-in event logging, deterministic shutdown logic, and traceable operational parameters support documented evidence generation for laboratory accreditation audits.
What maintenance intervals are recommended for filters and seals?
Coalescing and particulate filters should be inspected every 6 months and replaced annually or after 8,000 hours of operation; O-rings and pneumatic seals are rated for ≥3 years under normal use and included in the optional annual maintenance kit.