The article elaborates on the critical importance and technical challenges of trace gas monitoring across multiple key sectors. To address the difficulty of achieving precise measurements due to the extremely low concentrations of trace gases, Enweiya has introduced the PAS SENSE series of gas analyzers based on Photoacoustic Spectroscopy (PAS) technology.

This series of instruments detects acoustic signals generated by gas molecules after they absorb modulated infrared light, achieving ultra-high sensitivity with a detection limit reaching ppb levels. It outperforms traditional NDIR technology in low-concentration detection and resistance to gas interference. Its notable advantages include multi-gas detection capability, high stability, ease of maintenance, and built-in automatic environmental compensation.

The PAS SENSE series offers various models, such as the portable 1512, the rack-mounted 1314i, and the 1403 paired with a multi-point sampling system. These can be flexibly deployed in diverse scenarios including environmental monitoring, industrial process control, occupational safety, automotive emissions testing, and scientific research, providing users with accurate and reliable gas data to support decision-making.