Measuring and testing – Gas analysis – With compensation detail
Patent
1998-01-20
1999-09-07
Larkin, Daniel S.
Measuring and testing
Gas analysis
With compensation detail
73 233, 73 102, 340632, G01N 2700
Patent
active
059489626
ABSTRACT:
A codable gas detection system with at least one interchangeable gas sensor (2), which has standardized plug-type connections (5,6) between the gas sensor (2) and the measuring device (1), but is also able to prevent measured values of an unauthorized gas sensor (2) from being processed. Each gas sensor (2) contains a memory (3) with gas sensor-specific data and is connected via a line to the measuring device (1) with a first calculating and evaluating unit (7), to a downstream memory (8) and preferably to an alarm device (10). Via the second plug-type connection (5), the sensor element (4) proper is connected to a contacting unit (9) in the measuring device (1), and the contacting unit (9) is connected to the first calculating and evaluating unit (7), on the one hand, and to a downstream, second calculating and evaluating unit (11) for the measured value evaluation proper, on the other hand. Measured values from the gas sensor (2) are taken over only if the gas sensor-specific data are accepted by the calculating and evaluating unit (7).
REFERENCES:
patent: 4329870 (1982-05-01), Farmer
patent: 4704607 (1987-11-01), Teather et al.
patent: 4764879 (1988-08-01), Campbell
patent: 5025653 (1991-06-01), Schuldt
Dragerwerk AG
Larkin Daniel S.
LandOfFree
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