Technology · Photo Ionization Detection
Universal VOC detection technology with superior speed and sensitivity—providing real-time monitoring capabilities across diverse analytical applications.
Advanced UV-based detection technology providing universal VOC monitoring with exceptional speed and reliability.
Photo Ionization Detection (PID) uses high-energy ultraviolet (UV) photons to ionize organic and some inorganic compounds in gas samples. When compounds absorb UV energy exceeding their ionization potential, they form positive ions and free electrons, creating a measurable current proportional to concentration.
The PID's selective UV lamp energy determines which compounds can be detected, making it highly versatile for volatile organic compound (VOC) monitoring across numerous applications.
UV lamp emits high-energy photons
VOC molecules absorb UV energy
Positive ions and electrons created
Ion current proportional to concentration
Selectable lamp energies enabling precise compound targeting and optimal detection performance.
| Lamp Type | Energy (eV) | Wavelength (nm) | Typical Applications |
|---|---|---|---|
| 9.5 eV | 9.5 | 130 | General VOCs, indoor air quality |
| 10.0 eV | 10.0 | 124 | Environmental monitoring |
| 10.6 eV | 10.6 | 117 | Industrial hygiene, safety |
| 11.7 eV | 11.7 | 106 | Chemical process monitoring |
Comprehensive performance parameters defining PID analytical capabilities and operational range.
| Parameter | Typical Range | Performance Impact |
|---|---|---|
| Detection Range | 0.1 ppb to 10,000 ppm | 6+ orders of magnitude |
| Response Time (T90) | < 3 seconds | Real-time monitoring |
| Linearity | R² > 0.999 | Excellent for quantification |
| Reproducibility | < 2% RSD | High precision |
| Operating Temperature | -20°C to +50°C | Wide operating range |
| Humidity Range | 0-95% RH | Minimal moisture interference |
| Power Consumption | < 3W typical | Battery portable operation |
| Lamp Lifetime | 1-2 years continuous | Low maintenance |
Versatile VOC detection solutions across environmental, industrial, and analytical applications.
Advanced engineering solutions addressing common PID challenges for enhanced analytical performance.
Advanced engineering innovations delivering superior performance and analytical reliability.
Explore how IUT's enhanced Photo Ionization Detection technology can improve your VOC monitoring capabilities and analytical performance.
ppb detection · Sub-3 second response · Universal VOC coverage · Real-time monitoring