Gas detector in industrial refrigeration processes and biological degradation processes, including exhaled breath. Depending on the required sensitivity, different types of sensors are used (e.g., flame ionization detector, semiconductor, electrochemical, photonic membranes). Detectors usually operate near the lower exposure limit of 25ppm; however, ammonia detection for industrial safety requires continuous monitoring above the fatal exposure limit of 0.1%. There are several different sensors that can be installed to detect hazardous gases in a residence. Carbon monoxide is a very dangerous, but odorless, colorless gas, making it difficult for humans to detect. Carbon monoxide detectors can be purchased for around US$20–60. Many local
Mark Mowers the Griffins before he was recalled by the Red Wings on November 19, 2003. Mowers impressed in a checking line role and established a regular place on the team. Mowers suffered a foot injury towards the end of the season and missed the playoffs. During the 2004 NHL Lockout, Mowers played with the Malmö Redhawks of the SEL and Swiss team Fribourg-Gottéron. Mowers returned to the Red Wings for the 2005–06 season and was used as a reserve forward, playing in 46 games. On July 6, 2006, Mowers signed a two-year contract with the Boston Bruins, following former Red Wings