Auto startup & dual overpressure guard
Polished stainless steel gas path
Complete anti-liquid-backflow design
Auto constant pressure flow tracking
High-efficiency long-life electrolytic cell
Leak & water supply dual alarm
Maintenance-free hydrocarbon removal
Self-draining stainless air tank
Full stainless steel air pipeline
Two-stage precise pressure stabilization
Multi-layer comprehensive safety protection
Built-in oil-free compressor
This all-in-one online hydrogen & zero air generator is specially developed for online VOC monitoring equipment.
Simple operation: hydrogen production starts immediately after power-on. Built with secondary overpressure protection for stable and safe operation.
All gas pipelines are electrolytically polished and ultrasonically cleaned stainless steel tubes, which effectively improve gas quality and maintain stable chromatographic baseline.
Unique automatic anti-liquid-backflow design completely prevents liquid backflow inside the instrument.
Equipped with automatic constant pressure and constant current modules for stable output flow. The automatic tracking system fully adjusts hydrogen flow according to actual consumption. Hydrogen purity remains constant for continuous long-term operation.
Wide cylindrical electrolytic cell adopts imported special precious metal electrolytic materials. It boosts electrolysis efficiency, stabilizes cell temperature and greatly extends service life of the electrolytic cell.
Integrated functions including hydrogen leakage alarm, automatic water replenishment and water replenishment fault alarm.
Built-in HL-A unit automatically adsorbs and removes hydrocarbons, esters, oils and other impurities in air to upgrade air quality with maintenance-free performance.
Stainless steel air storage tank with automatic drainage design, eliminating yellow rust discharge that contaminates laboratories.
All gas circuits adopt electrolytically polished and ultrasonically cleaned stainless steel tubing to significantly enhance air purity.
Two-stage pressure stabilization delivers high-precision output pressure.
Comprehensive safety protections: safety relief valve, high-precision high-sensitivity pressure controller and overcurrent protector.
Oil-free compressor prevents oil molecules from entering the gas circuit system at the source.
| Instrument model | QPHA-300ZD | QPHA-500ZD |
| Hydrogen purity | 99.999％ | |
| Maximum hydrogen output flow rate | 300ml∕min | 500ml∕min |
| Hydrogen output pressure | 0.4 Mpa | |
| Maximum air output flow | 3000ml∕min | 5000ml∕min |
| Air quality | Dry, oil-free, clean gas | |
| Air output pressure | 0.4 Mpa | |
| Air particulate matter | 0.01um | |
| Pressure stability accuracy | <0.001 Mpa | |
| Hydrogen leak alarm value | ≧150ml/min | ≧250ml/min |
| Export specification | 1/8" diameter, φ3.3mm | |
| Noise level | <50 decibels | |
| Working power supply | 220V±10％﹔50HZ±5％ | |
| Environmental conditions | Ambient humidity: 0-35℃, relative humidity: ≤85%, free from large amounts of dust and corrosive gases. | |
| Maximum power | 750W | 800W |
| External dimensions: Width × Height × Depth | 425×355×555mm | |
| Weight | 36KG | |
Fuel gas and auxiliary hydrocarbon-free air for GC FID detectors
Stable high-purity hydrogen & clean air for chromatographic trace organic analysis
Supporting gas for headspace samplers and purge & trap analysis instruments
Pesticide residue testing of food and agricultural products
Trace VOC impurity detection of pharmaceutical raw materials and packaging materials
Routine chromatographic inspection for chemical factory quality control laboratories
Environmental, chemical engineering teaching and analytical testing experiments
Atmospheric pollutant simulation and trace organic research experiments
Long-term continuous laboratory analysis requiring stable hydrogen and zero air
