GASMIX™ COMPACT
ZEPHYR II — Compact 2-Channel Gas Mixer & Gas Diluter
Zephyr II is a compact, all-in-one 2-channel gas mixer and gas diluter for on-site calibration. It combines one span gas and one diluent to generate precise standards on demand, with embedded AlySoft™, ISO 6145-7 compliance and optional battery for 6 hours of autonomous operation.
ZEPHYR II — 2-Channel Gas Mixer for On-Site Calibration
A 2-channel gas mixer combines one span gas and one diluent to generate precise calibration standards on demand — the simplest and most portable configuration for routine multi-point calibration.
ZEPHYR II brings on-site customized gas standard preparation to a compact footprint. Thanks to its embedded AlySoft and 7″ touch interface, Zephyr can be installed exactly where you need it: on a bench, in a mobile lab or next to the analyzer. It is widely used for applications that involve only two gases, such as multi-point calibration from a concentrated standard plus diluent.
The interface is intuitive and fully automated: run a single injection or a pre-programmed sequence. AlySoft computes the target flows, calculates uncertainty of the final concentration (considering MFC flows and parent gas certificate) and logs events for traceability.
Smart Sequence Builder creates multi-point curves in one click — choose number of points, start/stop concentrations, and the software generates the levels automatically. Optional battery guarantees up to 6 hours of uninterrupted operation in the field or during mains cut-off.
Technical Specifications
Everything the ZEPHYR II delivers, at a glance.
| Dilution Performance | |
| Gas channels | 2 |
|---|---|
| Dilution ratio | 1:2 000 standard — up to 1:10 000 max |
| Flow accuracy | ±1 % of setpoint * |
| Repeatability | < 0.1 % of setpoint * |
| Response time | < 5 s |
| Accuracy & Traceability | |
| Standard | ISO 6145-7 compliant |
| Traceability | 400-point factory MFC calibration, NIST-traceable |
| Pressure & Connections | |
| Inlet pressure | 3 bar(g) nominal (max. 8 bar(g)) |
| Outlet pressure | up to 7 bar(g) |
| Wetted materials | Stainless steel 316 with inert coating, Kalrez® seals |
| Connections | Swagelok® 1/8″ (others on request) |
| Interface & Power | |
| Interface | 7″ color touchscreen, embedded AlySoft™ |
| Power supply | 90–260 VAC, 50–60 Hz |
| Optional battery | Internal rechargeable NiCad — up to 6 h autonomy |
| Operating temperature | 10–50 °C |
| Physical | |
| Dimensions (L × W × H) | 43 × 15 × 25 cm |
| Weight | 6.5 kg |
* When MFCs operate between 10 % and 100 % of full-scale flow.
Accuracy & Traceability — ISO 6145-7 Compliant Gas Diluter
Every integrated Mass Flow Controller (MFC) undergoes 400-point factory calibration across the full dynamic range and for each selected gas matrix (He, Ar, CH4, H2, N2, Air, CO2…). This ensures superior linearity and precision, especially at very low and very high flow rates.
ISO 6145-7 compliant
NIST-traceable calibration
Uncertainty calculation
±1% set point accuracy and <0.1% repeatability *
Dilution factor: 2 000 in standard — up to 10 000
Analyzer sync via dry contact/TTL
* When MFCs operate between 10% and 100% of full-scale flow.
Key Benefits
Compact & Simple
Small footprint, embedded control, no external PC required.
6 h Autonomy
Optional battery for uninterrupted field operation.
Accurate by Design
Multi-point MFC curves, uncertainty computation, traceability.
Smart Sequences
One-click multi-point curve builder and automated runs.
Aggressive Gases
SS316 + inert coating, Kalrez® seals; Compatible with sulfurs, NOx, NH₃, HF, VOC...
Analyzer-Friendly
Dry contact/TTL sync; stable flows for GC, µGC and analyzers.
Software & Automation for the ZEPHYR II Gas Mixer
ZEPHYR is operated via the built-in AlySoft on a 7″ touch screen — no PC required. It can also exchange signals with an analyzer via dry contact or TTL. Projects store gas libraries, MFC calibration curves per gas, user settings and analyzer sync parameters.
Touch-first UI with embedded control — plug & mix
Smart Sequence builder for multi-point recipes
Real-time adjustment of flow rates and concentrations
Automatic uncertainty calculation and reporting
Compatible with aggressive/reactive gases
Battery option for 6 h autonomous operation
Applications
Linearity check and calibration of GC (FID/TCD/PID/PHID/SCD/MS); refinery process analyzers; trace elemental analyzers; microGC for biogas; synthetic atmospheres in reactors/glove boxes; steam dilution and general two-gas mixing.
Environmental Monitoring
Calibration of ambient air analyzers; multi-point validation of NO, SO₂, CO, CO₂, O₃.
Chemical, Oil & Gas
Calibration of GC, µGC, RGA/NGA, elemental, LPG analyzers and spectrometers.
Research & Academia
Custom mixtures for method development; linearity, LOD/LOQ and hysteresis testing.
Specialty Gases & Food
Secondary standards and VOC/aroma analysis; inert version for aggressive gases.
Is the Zephyr II the right model for you?
Compare the ZEPHYR II with adjacent GasMix systems to find your best fit.
| You're viewing ZEPHYR II | AIOLOS III | NOMAD | |
|---|---|---|---|
| Best for | Simplest, most compact setup | Modular, multi-gas — highly configurable | On-site / field use |
| Gas channels | 2 | 2 to 6 | Portable dilution |
| Configuration | Fixed, plug-and-play | Many options available — tailored to your setup | Compact, battery-ready |
| Ideal use | 1 standard + 1 diluent | Evolving, complex gas mixtures | Portable calibration anywhere |
FAQ — ZEPHYR II
Most asked questions about compact two-gas mixing, automation and metrology.
Standard 1 : 2 000
Extended up to 1 : 10 000
No. PC is inside.
It includes embedded AlySoft with a 7″ touch UI. It can communicate with an analyzer via dry contact/TTL.
Yes.
Standard build uses SS316 with inert passivation and Kalrez® seals; suitable for sulfurs, NOx, NH₃, VOC and more. Contact us for specifics.
Inlet : 3 bar(g) nominal and max 8 bar(g)
Outlet : atmospheric up to 7 bar(g)
Dimensions : 43 × 15 × 25 cm
Weight : 6.5 kg
Yes.
Optional battery provides up to 6 hours of autonomous operation.
Flow accuracy is ±1 % of setpoint with repeatability below 0.1 % (MFCs operating at 10–100 % of full scale). The uncertainty of every mixture is calculated automatically per ISO 6145-7 and printed on the certificate.
Yes. From a single reference standard and a diluent, it generates an unlimited range of concentrations on demand reducing the number of cylinders you buy, store and handle.
Ready to Mix On Site with ZEPHYR II ?
Create on-demand standards with a compact, touch-first GasMix™ diluter.