Zero Air Generator
Parker Zero Air Generator
ChromGas ZAG Series
The Parker ChromGas ZAG Series zero air generators deliver a continuous supply of ultra-high-purity, hydrocarbon-free air from an external dry compressed air source. Designed for precision gas chromatography, they enhance detection limits, improve signal stability, and reduce baseline noise compared to conventional tank systems. Flow rates range from 3.5 L/min to 30 L/min, supporting up to 75 flame ionization detectors (FIDs).
When paired with the ChromGas Hâ‚‚F hydrogen generator, the ZAG creates a modular FID gas station compatible with all GC combustion detectors—FID, FPD, and NPD. An advanced digital interface provides simple control, status monitoring, and safety diagnostics.
- UHP organic-free air for GC applications
- Improved analytical resolution and detection sensitivity
- Compact, stackable modular design
- Minimal maintenance and operator attention required
- Two-year typical payback period
- Integrates easily with other ChromGas generators
- Meets CSA, UL, CE, and UKCA certifications
Principal Specifications
| Model | 75-83NA | ZAG-3.5LNA | ZAG-7LNA | ZAG-18LNA | ZAG-30LNA |
|---|---|---|---|---|---|
| Max. Zero Air Flow Rate | 1 L/min | 3.5 L/min | 7 L/min | 18 L/min | 30 L/min |
| Outlet Hydrocarbon Concentration (as methane) | < 0.1 ppm | < 0.05 ppm | < 0.05 ppm | < 0.1 ppm | < 0.1 ppm |
| Min./Max. Inlet Air Pressure | 40–125 psig (2.8–8.6 bar g) | ||||
| Max. Inlet Hydrocarbon Concentration (as methane) | 100 ppm | ||||
| Pressure Drop at Max Flow Rate | 4 psig (0.3 barg) | ||||
| Max. Inlet Air Temperature | 78°F (25°C) | ||||
| Inlet/Outlet Ports | 1/4″ NPT (female) | ||||
| Electrical Requirements | NA Models: 120V 60Hz, WD Models: 220V 50Hz | ||||
| Dimensions | 12″h × 10″w × 3″d (30 × 25 × 8 cm) |
17.2″h × 13.5″w × 16″d (437 × 343 × 407 mm) |
|||
| Shipping Weight | 7 lbs. (3 kg) | 41 lbs. (19 kg) | |||
FID Capacity per Model
| Number of FIDs | Model Number |
|---|---|
| Up to 2 | 75-83NA |
| Up to 8 | ZAG-3.5LNA |
| Up to 16 | ZAG-7LNA |
| Up to 40 | ZAG-18LNA |
| Up to 66 | ZAG-30LNA |
Maintenance & Installation Kits
| Description | Part Number |
|---|---|
| Maintenance Kit for Model 75-83NA | MK7583 |
| 12-Month Maintenance Kit for ChromGas Models | MKZAG-12M |
| 36-Month Maintenance Kits for ChromGas Models | MKZAG-3.5LNA-36M, MKZAG-7LNA-36M, MKZAG-18LNA-36M, MKZAG-30LNA-36M |
| Installation Kit (All Models) | IK76803 |
Frequently Asked Questions
What is a zero air generator used for in GC?
A zero air generator supplies hydrocarbon-free air for GC detectors like FID, FPD, and NPD, reducing background noise and enhancing detection accuracy.
How does the Parker ChromGas ZAG improve GC performance?
The ZAG system removes hydrocarbons and contaminants from the air stream, ensuring consistent detector response, higher sensitivity, and improved analytical reliability.
Can the ZAG generator be integrated with other Parker ChromGas systems?
Yes. The modular ZAG design stacks easily with other ChromGas generators like the Hâ‚‚F hydrogen generator to create a complete GC FID gas station.
