Patent ID: 6415646
Filing Date: 2002-07-09
Classification: G01N

Abstract:
A method for measuring gas concentrations via at least one measuring head, said measuring head having a gas sensor, a data memory, a measuring head specific identifier and means for communicating with a satellite supported global positioning system, the method comprising the steps of:determining position data of a position of the measuring head at preset time intervals via said satellite global positioning system and measuring gas concentration values with said gas sensor at the positions of the measuring head; comparing first position data of a previous first position of the measuring head with second position data corresponding to a current position of the measuring head; determining a difference position value between said first position data and said second position data; comparing said difference position value with a predetermined limit position value; if said predetermined position value is exceeded, storing said second position data together with said measured gas concentration value, corresponding to said second position, in said data memory of said measuring head; and, providing means for transmitting stored position data and corresponding gas concentration values together with said identifier to an evaluation unit.