Mastering co₂ Detection at High Altitudes
Ensuring Safety with Altitude-Compensated Technology
For businesses and industries operating at high elevations, whether it’s a bar in the Austrian Alps or a brewery located in mountainous regions, effective CO₂ monitoring is essential for protecting both personnel and customers.
What is often overlooked is that altitude can directly affect the accuracy of gas detection systems. As elevation increases, atmospheric pressure decreases, influencing how gases such as carbon dioxide disperse and how sensors measure them.
To maintain reliable detection in these environments, monitoring systems must be designed to compensate for changes in pressure. Solutions such as the upgraded Analox Ax60+ are specifically engineered to provide accurate CO₂ monitoring in low-pressure, high-altitude applications.
Understanding how altitude affects gas detection is critical to ensuring safety, compliance, and dependable monitoring performance wherever CO₂ is used or stored.
The Altitude Factor: How It Impacts CO₂ Detection
As altitude increases, atmospheric pressure decreases, making the air less dense. This change in pressure affects how gases disperse and how CO₂ concentrations are measured.
Typical atmospheric pressures at different elevations include:
- Sea level (0 m): Approximately 1013 mbar(a)
- 1,000 m elevation: Approximately 900 mbar(a)
- 3,000 m elevation: Approximately 700 mbar(a), common in high-altitude resorts and mountain facilities
Without altitude compensation, CO₂ detectors calibrated at sea level may under-report carbon dioxide concentrations at higher elevations.
For industries relying on CO₂ in applications such as beverage carbonation, hospitality, brewing, and food production, accurate gas monitoring is essential to reduce the risk of dangerous gas exposure and maintain safe operating environments.
Traditional Methods: How CO₂ Detection Was Managed Before
Before the development of altitude-compensated systems such as the Ax60+, accurate CO₂ monitoring at elevation often required manual recalibration, which could be both time-consuming and complex. Traditional approaches included:
Manual Calibration
Technicians manually adjusted detector settings or calibrated systems using test gases to simulate high-altitude conditions. This process required specialist knowledge and introduced the potential for human error.
Calibration Gases
Calibration gases with known CO₂ concentrations were used to compensate for how carbon dioxide behaved at different altitudes. While effective, the process was cumbersome and often needed repeating over time.
Manufacturer Adjustment Guidelines
Some manufacturers supplied altitude adjustment tables to help users recalculate detector settings at different elevations. However, accuracy could vary, particularly in extreme or rapidly changing environments.
The Modern Solution: Analox Ax60+ with Altitude Compensation
The Analox Ax60+ simplifies CO₂ monitoring at high altitude through built-in altitude compensation technology, removing the need for complex manual recalibration.
Altitude Selection
Using a simple configuration menu, users select the altitude of the installation site (refer to Section 8.5 of the Service Manual). The Ax60+ then automatically adjusts its operation to compensate for the expected atmospheric pressure at that elevation, helping ensure accurate and compliant CO₂ monitoring.
Easy Configuration
The Ax60+ has been designed for straightforward setup. Once the installation altitude is configured, the system automatically manages the required pressure compensation adjustments, providing reliable monitoring with minimal user intervention.
Enhanced Accuracy Through Pressure Compensation
The Ax60+ also allows the system baseline, or “datum,” to be aligned with the actual atmospheric pressure at the installation location. This improves measurement accuracy by compensating for pressure-related variations in CO₂ detection, helping maintain reliable monitoring performance across a wide range of elevations.
The Modern Solution: Analox Ax60+ with Altitude Compensation
The Analox Ax60+ simplifies CO₂ monitoring at high altitude through built-in altitude compensation technology, removing the need for complex manual recalibration.
Altitude Selection
Using a simple configuration menu, users select the altitude of the installation site (refer to Section 8.5 of the Service Manual). The Ax60+ then automatically adjusts its operation to compensate for the expected atmospheric pressure at that elevation, helping ensure accurate and compliant CO₂ monitoring.
Easy Configuration
The Ax60+ has been designed for straightforward setup. Once the installation altitude is configured, the system automatically manages the required pressure compensation adjustments, providing reliable monitoring with minimal user intervention.
Enhanced Accuracy Through Pressure Compensation
The Ax60+ also allows the system baseline, or “datum,” to be aligned with the actual atmospheric pressure at the installation location. This improves measurement accuracy by compensating for pressure-related variations in CO₂ detection, helping maintain reliable monitoring performance across a wide range of elevations.
Safety Assured at Any Elevation
Advancements in CO₂ detection technology, such as those built into the Analox Ax60+, make it easier for high-altitude businesses to operate safely and confidently. By understanding how altitude affects gas detection, businesses can maintain safe environments and support regulatory compliance without the complexity of manual recalibration.
With built-in altitude compensation, the Ax60+ delivers reliable and accurate CO₂ monitoring across a wide range of elevations, helping simplify safety management in challenging environments.
For more information about how the Analox Ax60+ can support your high-altitude operation, contact Analox today.
CO₂ Calculator
Many people believe an oxygen (O₂) monitor alone is enough to stay safe when using carbon dioxide (CO₂). In reality, CO₂ is a toxic gas, and dangerous concentrations can be reached long before an O₂ alarm activates.
As CO₂ leaks into an area, it displaces oxygen. However, most O₂ monitors only trigger alarms at around 19.5% O₂—by which point CO₂ levels may already be hazardous.
If your facility uses CO₂, a dedicated CO₂ monitor is essential. It provides earlier warning of leaks, helping protect personnel, reduce product loss, and minimize costly CO₂ waste.
Use this calculator to see how increasing CO₂ concentrations affect surrounding oxygen levels.
SLOT Specified level of toxicity (1 - 5% of fatalities) SLOD Significant likelihood of death (50% fatalities)
Find out more about how the Ax60+ can help you to keep your people and your business safe.
Key Takeaway
If you are storing or using carbon dioxide, you should use a dedicated carbon dioxide detector. Analox offers a range of portable and fixed CO₂ monitoring solutions designed to suit a wide variety of safety applications.
If you need advice on selecting the right gas detection solution for your environment, please get in touch. Our team will be happy to help you identify the most suitable monitoring system for your application.