Dürr ZA4 compact zero-air generator without compressor
Introduction
The Dürr Compact Zero Air Generator ZA4 without compressor is an ideal solution for laboratory and analysis environments where particularly pure and hydrocarbon-free air is required to ensure precise measurement and analysis results. Thanks to its sophisticated catalyst system and intelligent electronics, it offers high reliability, low operating costs and an extremely constant purity level. Unlike the [SICOLAB 025 mini], which is a low-noise compressor station that provides an efficient compressed air supply, this generator delivers a self-contained zero-air flow to ensure reliable detector or analysis results.
Detailed specifications
This generator is specifically designed to produce a continuous stream of air with a hydrocarbon content of less than 0.05 ppm (as methane). This ensures analysis-accurate work in areas such as gas chromatography and other analytical processes. In contrast to [Dürr Compact Zero Air Generator ZA2], which is used for similar applications, the model described here offers a higher flow rate and is predestined for laboratories with increased air requirements. Its key performance features include:
- Flow rate of up to 4,000 ml/min at a maximum pressure of 6 bar
- Compact, stackable design that saves valuable bench space
- Robust catalyst technology for effective and sustainable removal of organic contaminants
- Oil and grease-free air supply to ensure the best possible GC signal-to-noise ratio
- LED status and maintenance indicator for quick status checks
- IP54 protection classification for safe working under demanding laboratory conditions
- Maximum delivery pressure of 6 bar, safety pressure 9.5 bar
The integrated particle filter down to 0.01 μm additionally removes dust particles or other suspended matter from the supplied air. This is crucial to protect sensitive components such as valves and detectors in gas chromatography systems from the smallest deposits and to increase the service life of the devices.
Application areas
Zero air generators like this one are primarily used in laboratory-intensive industries and research areas where the availability of extremely clean air is absolutely crucial. Due to the low hydrocarbon content, sensitive detectors in gas chromatography processes are optimally supplied. Given the performance limits of oil-free compressors or external compressed air systems, the generator offers numerous advantages for the following applications:
- GC-FID (gas chromatography with flame ionization detector) for the precise quantification of organic substances
- GC-NPD (nitrogen-phosphorus detector) for the analysis of pesticides, pharmaceutical products or proteins
- GC-FPD (flame photometric detector) for measuring sulphur, phosphorus and other elemental compounds
- GC-AES (atomic emission spectroscopy) for highly sensitive trace element determinations
Contamination from lubricating oil or other hydrocarbons in the air supply is a common problem in laboratories that rely on external compressed air cylinders or nearby compressors. The generator largely prevents such fluctuations and delivers the most stable, reproducible air quality from a proven and robust technology.
FAQs
How high is the purity of the generated air?
The air is purified to a hydrocarbon content of less than 0.05 ppm (based on methane). This is achieved using a highly efficient precious metal catalytic converter.
What needs to be considered during installation
Make sure that you use a suitable compressed air source, such as an oil-free compressor. As this model does not have an integrated compressor, it must be connected to an external compressor solution.
What standards and certifications are available
The device has an IP54 protection class and meets all relevant safety standards for laboratory applications. Other internal standard tests such as CE conformity are complied with.
What are the maintenance requirements?
Maintenance is very efficient. An intelligent heating circuit increases the service life of the catalytic converter, and the particulate filter only needs to be checked and replaced at recommended intervals.
What ambient temperatures are permitted
The generator works reliably in a range from +5 °C to +35 °C. However, it is advisable to operate the generator in a laboratory environment with as constant a temperature as possible.
Conclusion
The Dürr ZA4 compact zero-air generator without compressor offers an economical and technically mature option for supplying laboratories with clean, reproducible zero air. The stable pressure build-up, the powerful catalytic converter and the sophisticated filter system ensure reliable results even with demanding analytical methods. With its easy-care design, space-saving construction and integrated status indicators, it is ideal for everything from routine determinations to highly sensitive test methods. Anyone who wants to ensure sophisticated gas chromatography applications and precise analysis in everyday laboratory work will find a very reliable and user-friendly solution here.
