Enabling rockets and aircraft to accurately monitor oxygen (O₂) and carbon dioxide (CO₂) levels.
The SV-Multigas-2 is a dual oxygen (O₂) and carbon dioxide (CO₂) monitor designed for vehicles operating in the upper atmosphere. Housed in a rugged, compact enclosure, the unit is ideal for airborne delivery systems, satellites, and aircraft cabins.
Since 2014, the SV-Multigas-2 has been successfully used in rockets traveling into outer space.
SV-Multigas-2
| Feature | Specification |
|---|---|
| Operating temperature range | 32 to 104 °F / 0 to 40 °C |
| Storage temperature range | −4 to 140 °F / −20 to 60 °C |
| Operating pressure range | 8.7 to 17.4 psia / 600 mbar to 1200 mbara |
| Vacuum tolerance | normal operation of the SV-Multigas-2 will not be affected by 4 hour exposure to vacuum |
| Electrical supply | 18 to 36 V DC, 100 mV ripple maximum |
| Power consumption | 5 W maximum |
| 2 analogue outputs are provided, one for each gas | Zero output: 1.0 V, full-scale output: 5.0 V, warm-up/fault output: 0.25 V Outputs are isolated from the incoming power supply and from each other |
| All wiring is to MIL-DTL-22759 (SAE-AS-22759/33) |
O₂ Sensor
| Feature | Specification |
|---|---|
| Range | 0 to 5.80 psi pO2 / 0 to 400 mbar |
| Repeatability @ 14.5 psia, 70 °F / 1000 mbara, 21 °C | ± 0.116 psi pO2 / ± 8 mbar |
CO₂ Sensor
| Feature | Specification |
|---|---|
| Range | 0 to 0.14 psi pCO2 / 0 to 10 mbar |
| Repeatability @ 14.5 psia, 70 °F / 1000 mbara, 21 °C | ±(0.0014 psi pCO2 + 1.1% of reading) / ±(0.1 mbar + 1.1% of reading) |
The SV-Multigas-2 incorporates user-maintainable analog sensors that provide a 1–5 V output. This modular approach to gas monitoring gives customers the flexibility to integrate the unit into their own systems. It can be installed directly in the gas path or used for general air monitoring.
Dozens of SV-Multigas-2 units are currently orbiting Earth.
Industries that use the SV-Multigas-2 to accurately monitor oxygen and carbon dioxide levels in upper-atmosphere vehicles include:
