A 1531.52 nm Tunable Diode Laser-Based System for High-Sensitivity Remote Monitoring of Acetylene and Ammonia Leaks in Industrial Plants

We demonstrate a 1531.52 nm tunable diode laser -based sensor system that can be used to build a dense, wide-area sensor network for in situ multi-point detection of acetylene (C<inf>2</inf>H<inf>2</inf>) and ammonia (NH<inf>3</inf>) leaks in industrial safety applications. The detection limit of the sensor is 16 ppm for C<inf>2</inf>H<inf>2</inf> and 228 ppm for NH<inf>3</inf> using a 28 cm long single-pass gas cell. High temperature measurements are also demonstrated in a tube furnace using a 1392.54 nm laser-based sensor. The accuracy of temperature measurement is 92.13% at 500 K and 96.79% at 700 K.