E+E Releases New PTFE Membrane Filter for EE872 CO₂ Probe
- 3 days ago
- 2 min read

Businesses operating in temperature-controlled and industrial environments require reliable environmental monitoring equipment that can withstand demanding conditions. To support improved CO₂ measurement performance in harsh applications, E+E Elektronik has introduced a new PTFE membrane filter cap for the EE872 CO₂ probe with Ø25 mm.
Designed for enhanced liquid and particle retention, the new membrane filter helps protect the sensor in environments where humidity, airborne particles, and contamination can negatively affect performance and long-term accuracy.
Improved Protection for Harsh Environments
The new PTFE membrane filter has been specifically engineered for applications that require stronger environmental protection and improved durability. According to E+E Elektronik, the filter provides reliable protection in harsh environments while maintaining stable CO₂ monitoring performance.
This makes the solution particularly valuable in industries where environmental conditions are challenging, including:
Greenhouses
Agricultural facilities
Industrial HVAC systems
Food storage environments
Pharmaceutical and laboratory spaces
Cold-chain facilities
Industrial processing plants
In these applications, sensors are frequently exposed to moisture, dust, condensation, and airborne contaminants that can impact measurement stability over time.
Why Membrane Filters Matter for CO₂ Monitoring
CO₂ probes play an important role in maintaining air quality, process efficiency, and environmental control. However, the sensing elements inside these probes are sensitive to contamination and harsh operating conditions.
A high-quality membrane filter acts as a protective barrier by:
Preventing liquid ingress
Reducing particle contamination
Protecting sensitive sensing components
Supporting long-term sensor stability
Reducing maintenance requirements
Extending operational lifespan
The use of PTFE material also provides excellent resistance to moisture and environmental pollutants, making it suitable for demanding industrial and agricultural environments.
Designed for the EE872 CO₂ Probe

The membrane filter has been developed specifically for the E+E EE872 CO₂ probe with Ø25 mm and is available as an accessory under item number HA010135 or by selecting option F21 in the ordering configuration.
The EE872 probe itself is widely used in environments that require accurate and reliable CO₂ monitoring under difficult operating conditions. By adding enhanced membrane protection, businesses can improve sensor reliability while reducing exposure-related performance issues.
Benefits for Temperature-Control Businesses
For businesses operating in the temperature-control industry, reliability and maintenance reduction are critical. Environmental monitoring systems often operate continuously in facilities where downtime or inaccurate readings can impact operational efficiency and product quality.
The new membrane filter offers several operational benefits:
Improved Sensor Longevity
The protective membrane helps shield the sensor from contaminants and moisture, helping extend the life of the probe.
Reduced Maintenance
Enhanced particle and liquid retention can reduce the frequency of cleaning and maintenance interventions.
Better Measurement Stability
Stable environmental protection supports more accurate and consistent CO₂ readings over time.
Reliable Performance in High-Humidity Areas
The filter is particularly useful in environments where condensation or elevated humidity levels are present.
Final Thoughts
As environmental monitoring becomes increasingly important across industrial and temperature-controlled applications, sensor protection solutions are playing a bigger role in maintaining reliable system performance.
The release of the new PTFE membrane filter for the EE872 CO₂ probe provides businesses with an additional layer of protection against harsh operating conditions while supporting long-term sensor accuracy and durability.
For companies in HVAC, agriculture, industrial automation, and temperature-controlled facilities, investing in properly protected CO₂ monitoring equipment can help improve operational efficiency, reduce maintenance demands, and support more reliable environmental control systems.




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