eV
Photon energy matters
A compound can be photoionized when the lamp energy meets or exceeds its ionization potential. LuxIon offers 10.0 eV and 10.6 eV options for different detection requirements.
Technology
Photoionization detection starts with a stable VUV source.
PID instruments use high-energy ultraviolet photons to ionize target compounds. Lamp selection influences which compounds can be ionized, instrument performance, integration design, and maintenance planning.
RF
RF excitation
RF excitation is the operating principle used by LuxIon PID lamps. It provides a compact approach suitable for integration into gas detection instruments.
VUV
Vacuum ultraviolet output
VUV radiation provides the photon energy needed for photoionization. The lamp is only one part of a complete PID system; chamber design, electrodes, electronics and calibration also matter.
How PID works
Quantitative, non-destructive photoionization
Photoionization is the absorption of high-energy photons by a molecule, resulting in ionization. The current created is proportional to molecule concentration, providing a simple method for quantitative analysis of many compounds. Because the technique is non-destructive, it can be combined with other detectors to extend analysis.
DC or RF operation
DC-operated PID lamps are generally preferred for fixed installations such as gas chromatographs, where continuous monitoring and high-voltage power supplies can be supported. RF-operated lamps are well suited to handheld detectors that require compact size and low-power drive circuitry.
Designed around your instrument
Invisens manufactures standard-design PID lamps in both RF and DC versions. Our technical team can work with OEMs to design and build lamps to specific dimensional and performance requirements.
Why Invisens PID lamps
More choices for selective gas detection
Different gas fills and window materials provide photon energies from 8.4 to 11.7 eV for greater selectivity. High-purity windows improve transmission and intensity, while low cost and long lamp life support practical system design.
Flexible integration
DC or RF drive options for handheld and fixed installations, with customized lamp designs and dimensions.
Broad applications
PID lamps support VOC detection, gas chromatography, trace-gas monitoring, and sample ionization for mass spectrometry.
Field-ready sensing
PID monitoring can be combined with other techniques for hazardous-material response, industrial maintenance, public safety, and military protection.
Engineering support
Choose the lamp with the complete instrument in mind.
Our team can discuss energy selection, dimensions, electrical conditions, expected operating environment and relevant technical documentation before you commit to an integration path.