Roy, AnirbanAnirbanRoyChakraborty, Arup LalArup LalChakrabortyGrattan, Kenneth T.V.Kenneth T.V.Grattan2025-08-312025-08-312021-01-01[9789811592584]10.1007/978-981-15-9259-1_862-s2.0-85103292414https://d8.irins.org/handle/IITG2025/25610We 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.falseChemical sensing | Ratio thermometry | Tunable diode laser spectroscopyConference Paper18674941379-38220210cpConference Proceeding0