Patent ID: 6794991
Filing Date: 2004-09-21
Classification: G01N,G08B

Abstract:
A method of monitoring for a selected gas from a potential source of the selected gas, said method comprising the steps of providing a plurality of gas monitor stations at locations spaced from the potential source of the selected gas and from a master station, said step of providing a plurality of gas monitor stations includes providing a computer connected with a radio and a sensor at each of the gas monitor stations, transmitting data relating to the selected gas from a radio at the master station to the radios at each of the gas monitor stations, storing the data transmitted from the master station and relating to the selected gas in the computers at each of the gas monitor stations, sensing atmosphere adjacent to each of the gas monitor stations, and transmitting a signal from the radio at anyone of the gas monitor stations to the radio at the master station in response to sensing of a concentration of the selected gas which is a function of the data transmitted from the master station to the one gas monitor station.