equipments in mechanical engineering , supply of equipments in mechanical engineering ( for technical specificationsrefer nit ) , exhaust gas analyser: range - co: 0 to 15%, hc : 0 to 30000 ppm as hexane, o2: 0 to 25%, co2: 0 to 20% nox : 0 to 5000 ppm data resolution: co, o2, co2 : 0.01%, hc & nox : 1ppm accuracy : + 3% relative, + 0.02% absolute, display : 20 character x 4-line back light lcd display additional 8 mm multi color led display for each gas for distant view. start-up time : 1 min from power on. full accuracy within 15 minutes. zero time : less than 30 seconds. intrinsic response time :15 seconds gas flow rate : 1 lit/min. (adjustable using built-in flow meter ) rating temperature : 0 to 100c powersupply : 230 v+10% 12 v battery. => limited