WIGGENS GH20L Oil-Lubricated Diaphragm Air Compressor

Overview

The WIGGENS GH20L is an industrial-grade, oil-lubricated diaphragm air compressor engineered for continuous-duty laboratory and analytical instrumentation support. Unlike oil-free compressors, the GH20L employs a precision-machined, oil-lubricated diaphragm mechanism that delivers high-pressure, high-flow compressed air with exceptional thermal stability and mechanical longevity. Its dual-stage compression architecture—combined with integrated stainless steel pressure vessels—ensures consistent output pressure up to 9.5 bar while maintaining flow stability under variable load conditions. Designed specifically for critical gas supply applications—including nitrogen generators, zero-air generators, GC carrier gas systems, and pneumatic actuators—the GH20L meets stringent purity requirements through a three-stage filtration train: particulate pre-filtration (5 µm), coalescing oil mist removal (0.3 µm), and ultra-fine micro-aerosol capture (0.01 µm). The resulting compressed air achieves an atmospheric-pressure dew point of –20 °C and complies with ISO 8573-1:2010 Class 2:2:2 for solid particles, water, and oil content—making it suitable for ISO/IEC 17025-accredited laboratories and GLP-compliant environments.

Key Features

• Stainless steel dual-tank system (2 × 10 L) prevents internal corrosion and particulate shedding during extended operation
• Integrated condenser, triple-stage filtration (particulate + coalescing + micro-aerosol), and desiccant dryer ensure ≤0.01 µm particle retention and –20 °C pressure dew point
• Digital pressure controller with user-configurable start/stop thresholds and overpressure alarm function (audible & visual)
• Thermal protection switch automatically de-energizes motor at elevated temperatures; auto-restart after cooldown
• Spring-loaded safety relief valve calibrated to activate precisely at 9.5 bar to prevent over-pressurization
• Direct-drive motor coupling eliminates belt vibration and slippage, contributing to <62 dB(A) operational noise level
• Vibration-dampening mounts and acoustic insulation minimize structural transmission and extend service life
• Front-panel digital pressure gauge with ±0.1 bar repeatability and NIST-traceable calibration capability

Sample Compatibility & Compliance

The GH20L is compatible with all standard laboratory gas-consuming instruments requiring clean, dry, oil-stabilized compressed air. It supports continuous feed to nitrogen and zero-air generators per ASTM D6215 and ISO 8573-1 specifications. Its filtration architecture satisfies USP requirements for compressed air used in pharmaceutical analytical instrumentation and meets the air purity prerequisites for EPA Method TO-15, ASTM D5504, and ICH Q5C stability testing protocols. The unit’s electrical design conforms to IEC 61000-6-3 (EMC emissions) and IEC 61000-6-2 (immunity), and its mechanical safety components comply with PED 2014/68/EU and EN 13445-1. Full traceability documentation—including CE declaration, RoHS compliance certificate, and factory test reports—is supplied with each unit.

Software & Data Management

While the GH20L operates as a standalone hardware system without embedded firmware or network connectivity, its digital pressure controller supports analog 4–20 mA output (optional accessory) for integration into centralized lab monitoring platforms such as LabVantage, Thermo Fisher SampleManager, or Siemens Desigo CC. All pressure events—including start/stop cycles, overpressure alarms, and thermal shutdowns—are logged locally via non-volatile memory with timestamping. Audit trail functionality adheres to FDA 21 CFR Part 11 requirements when paired with validated third-party SCADA interfaces. Maintenance scheduling reminders are configurable via front-panel menu, aligning with ISO/IEC 17025 Clause 6.4.8 preventive maintenance protocols.

Applications

• Primary air source for nitrogen and zero-air generators in GC, GC-MS, and FTIR systems
• Pneumatic actuation for automated sample introduction valves, autosamplers, and robotic liquid handlers
• Supply air for cleanroom environmental monitoring sensors and particle counters
• Pressurization of solvent delivery systems in HPLC and SFC instrumentation
• Calibration gas generation in metrology labs requiring stable, low-humidity compressed air
• Support for laser-based optical alignment systems where vibration sensitivity mandates direct-drive architecture

FAQ

What is the recommended maintenance interval for the GH20L?
Scheduled maintenance—including filter element replacement and oil inspection—is required every 1,000 operating hours or annually, whichever occurs first, per WIGGENS Service Manual SM-GH20L Rev. 3.2.
Can the GH20L be operated in an unventilated enclosure?
No. Ambient airflow of ≥200 m³/h is required around the unit to maintain safe thermal dissipation; operation in enclosed cabinets necessitates forced ventilation per EN 60204-1 Annex B.
Is the GH20L compliant with GMP requirements for pharmaceutical labs?
Yes—when installed with validated filtration (e.g., WND30123 triple-filter kit) and documented within a qualified compressed air system per EU GMP Annex 15 and ISPE Baseline Guide Vol. 3.
Does the unit include a built-in drain trap?
Yes—the integrated condensate separator features automatic float-type drainage with manual override; scheduled drain verification is part of routine IQ/OQ protocols.
What certifications accompany the GH20L upon shipment?
Each unit ships with CE Marking documentation, RoHS Declaration of Conformity, Factory Calibration Certificate (traceable to PTB), and full PED 2014/68/EU conformity assessment report.