KJ GROUP GZK-101 Low-Vacuum Pumping System

Overview

The KJ GROUP GZK-101 Low-Vacuum Pumping System is an integrated, benchtop-ready vacuum station engineered for reliable operation in the 10⁻³ Torr (≈ 0.1 Pa) regime. It combines a TRP-12 two-stage rotary vane mechanical pump with a hybrid digital vacuum gauge (CVM-211), stainless steel vacuum plumbing, and a rigid mobile support frame—forming a turnkey solution for applications requiring stable low-to-medium vacuum environments. The system operates on standard single-phase AC power and employs oil-sealed positive displacement pumping technology, delivering consistent gas removal across non-reactive and mildly corrosive process gases. Its architecture follows ISO-KF (Quick Flange) interconnection standards, ensuring rapid assembly, leak-tight integrity, and compatibility with common laboratory vacuum accessories. Designed for durability and serviceability, the GZK-101 adheres to IEC 61000 electromagnetic compatibility requirements and carries CE marking per Directive 2014/30/EU (EMC) and 2014/35/EU (LVD).

Key Features

• Pre-integrated TRP-12 rotary vane pump with 550 W motor and 4 L/s nominal pumping speed at atmospheric pressure
• Dual-sensor CVM-211 digital vacuum gauge supporting continuous measurement from rough vacuum (10⁵ Pa) down to high vacuum (10⁻¹ Pa), with auto-ranging and RS232 output capability
• Structural frame fabricated from powder-coated steel, rated for 454 kg (1000 lbs) static load and fitted with four locking swivel casters for lab mobility and stability
• KF-25 (ISO-KF DN25) inlet interface as standard; exhaust via 1/8″ barb fitting compatible with oil mist filters or exhaust line adapters
• High-vacuum isolation valve with dual KF-25 ports enables safe pump isolation during chamber venting or maintenance without breaking the main vacuum line
• Stainless steel (ASTM A240 316) flanges and bellows ensure corrosion resistance, UHV-cleanability, and long-term dimensional stability under thermal cycling
• Oil reservoir capacity of 1000 mL supports extended uninterrupted operation; sight glass and drain port facilitate routine oil level inspection and replacement

Sample Compatibility & Compliance

The GZK-101 is suitable for vacuum processes involving inert gases, dry air, water vapor, and non-aggressive solvents. It is not recommended for halogenated compounds, strong oxidizers, or condensable vapors exceeding the pump’s cold trap capacity. All wetted components—including flanges, valves, and bellows—are constructed from 316 stainless steel to meet ASTM F883 requirements for vacuum hardware cleanliness and outgassing performance. The system complies with CE marking directives for electrical safety and electromagnetic compatibility. While not certified to ISO 27427 (vacuum terminology) or ISO 21360-1 (vacuum pump testing), its TRP-12 pump conforms to ISO 21360-2 for volumetric flow rate verification under standard test conditions (23 °C, 101.3 kPa, dry air). Documentation includes Declaration of Conformity and technical files traceable to manufacturer serial numbers.

Software & Data Management

The CVM-211 vacuum gauge supports analog (0–10 V) and digital (RS232) outputs, enabling integration into custom LabVIEW, Python (PySerial), or MATLAB-based data acquisition systems. No proprietary software is bundled; however, ASCII protocol documentation is supplied for command-line control (e.g., “MEAS?” for real-time reading, “UNIT mbar” for unit selection). The gauge logs timestamped readings internally (up to 10,000 points) and supports CSV export via terminal emulator. For GLP/GMP-aligned environments, users may configure external SCADA or historian platforms (e.g., Ignition, Siemens Desigo) to capture vacuum trend data with audit-trail-enabled timestamps—meeting FDA 21 CFR Part 11 requirements when paired with appropriate electronic signature controls.

Applications

• Evaporation and drying of thin films, coatings, and moisture-sensitive powders under controlled low vacuum
• Pre-evacuation stage for diffusion pumps, turbo-molecular pumps, or sputtering systems prior to high-vacuum operation
• Vacuum impregnation of porous ceramics, composites, or wood specimens
• Leak testing of sealed enclosures, vacuum chambers, and fluid-handling components using pressure-rise methodology
• Supporting glovebox antechambers and inert-atmosphere transfer locks where base pressure < 1 Pa is required
• Materials science labs performing solvent degassing, vacuum filtration, or low-pressure annealing of polymers and oxides

FAQ

What is the ultimate vacuum achievable with the GZK-101 in a clean, leak-free system?
Under ideal conditions (dry nitrogen environment, calibrated gauge, no virtual leaks), the system achieves ≤ 0.5 Pa (≈ 3.8 × 10⁻³ Torr) as verified by the CVM-211 gauge. This reflects the combined performance of the TRP-12 pump and conductance-limited piping.
Can the GZK-101 be used with reactive gases such as chlorine or ammonia?
No. The TRP-12 pump uses hydrocarbon-based vacuum oil and lacks chemical-resistant seals. Exposure to corrosive or polymerizing gases will degrade pump oil, damage vanes, and compromise vacuum integrity.
Is the CVM-211 gauge NIST-traceable?
The gauge is factory-calibrated against reference standards traceable to national metrology institutes. A calibration certificate (with uncertainty budget) is available upon request at time of order.
Does the system include oil mist filtration?
A basic exhaust filter is not included in the standard configuration but can be added as an optional accessory (KF-25 mounted oil mist eliminator, model OME-25).
How often should the pump oil be changed?
Under continuous operation with clean, dry loads, oil change intervals are recommended every 500 operating hours or quarterly—whichever occurs first. Oil analysis (viscosity, acid number) is advised for mission-critical applications.