Professional radon sensing technology designed for higher sensitivity, stable long-term monitoring, and faster environmental response.
Why Sensor Technology Matters in Radon Detection
Radon concentration continuously changes due to ventilation, weather conditions, pressure differences, and indoor airflow. Reliable radon monitoring depends on the sensor's ability to detect small concentration changes with long-term stability.
Traditional semiconductor-based sensors may require longer stabilization periods and are more sensitive to environmental drift. Pulse Ionization Chamber technology is designed to provide more stable long-term measurements with faster environmental response.
What Is a Pulse Ionization Chamber (PIC) Sensor?
A Pulse Ionization Chamber sensor measures radon concentration by detecting ionization events generated by alpha particles inside a sealed chamber.
When radon decays, alpha particles interact with air molecules inside the chamber and create ionized particles. These ionization events generate electrical pulses that are continuously analyzed by the sensor system to calculate radon concentration.
Unlike conventional semiconductor-based detection methods, Pulse Ionization Chamber technology is designed for continuous long-term monitoring with higher stability and lower environmental drift.
3-Step Detection Process
Step 1 — Radon Enters the Chamber
Indoor air naturally diffuses into the ionization chamber where radon gas is present.
Step 2 — Alpha Particles Generate Ionization
Radon decay releases alpha particles that ionize air molecules inside the chamber.
Step 3 — Pulse Signals Are Analyzed
The sensor electronics detect and process ionization pulses to calculate radon concentration continuously.
Why PIC Technology Is Different
| Feature | Semiconductor Sensor | Pulse Ionization Chamber |
|---|---|---|
| Stabilization Speed | Slower | Faster |
| Environmental Drift | Higher | Lower |
| Long-Term Stability | Moderate | High |
| Continuous Monitoring | Basic | Professional |
| Response Updates | Slower | 10-Minute Updates |
| Detection Principle | Semiconductor | Ionization Pulse Detection |
PM04 Professional Radon Sensor Platform
Designed for professional indoor radon monitoring applications and continuous environmental measurement systems.
Technical Specifications
- Detection Technology: Pulse Ionization Chamber (PIC)
- Sensitivity: 0.30 cpm/pCi/L
- First Effective Data: < 60 minutes
- Data Update Interval: 10-minute updates / 60-minute moving average
- Measurement Range: 0.10 – 99.99 pCi/L
- Accuracy: < ±15%
- Communication Interface: I²C
- Operating Conditions: 10–50°C / RH < 80%
- Power: DC 12V
Built for Long-Term Monitoring
The PM04 sensor platform is designed for continuous long-term operation with stable pulse-counting architecture and environmental monitoring capability.
The sensor continuously analyzes ionization pulse events and maintains rolling average calculations for improved long-term trend visibility.
This makes the platform suitable for professional indoor air quality monitoring applications where stable continuous data is critical.
Environmental Considerations
The sensor platform is designed for stationary indoor environments and includes operational considerations for:
- Humidity influence
- Vibration effects
- Electrical noise
- Airflow conditions
Proper environmental control improves long-term measurement stability and accuracy.
Integration & Applications
- Indoor Air Quality Systems
- Smart Ventilation Systems
- HVAC Monitoring
- Environmental Monitoring Platforms
- Building Automation
- Continuous Radon Monitoring Devices
