Sensor Specifications Photoionization sensor with standard 10.6 eV or optional 9.8 eV or 11.7 eV lamp Gas Monitor: Range/Resolution/Response Time (T90) VOCs 0 to 999.9 ppm; 0.1 ppm; < 3 s 100 to 999.9 ppm; 0. 1 ppm; < 3 s 1000 to 9999 ppm; 1 ppm; < 3 sec Benzene: 0 to 200 ppm; 0.025 ppm; < 60 sec Butadiene: 0 to 200 ppm; 0.025 ppm; < 60 sec