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
Lawn Rangers of the Thomas Monahan Broom Company, they decided to push lawn mowers and toss brooms in the parade. They still needed a name for what they were doing. Clayton Moore, the original Lone Ranger, was the Grand Marshal of that year's Broom Corn Parade, so they became the World Famous "Lawn Rangers". Over the years the Lawn Rangers have lived life by their motto: You're only young once, but you can always be immature. The group has participated in a number of parades including the Holiday Bowl parade in San Diego, California, the Fiesta Bowl parade in Tempe, Arizona, the