Abstract: Systems and methods for monitoring rotating machinery are disclosed. Transmitter and receiver antennas can be provided with access to the rotating machinery. At least one receiver signal resulting from at least one transmitter signal that has propagated through a portion of the rotating machinery can be obtained. A first signal pair can be formed from a first receiver signal and a first transmitter signal, or from first and second receiver signals obtained from spatially-separated receiver antennas, or from first and second receiver signals which are attributable to different transmitter signals. Amplitude and phase information of a plurality of frequency components for each signal in the first signal pair can be determined. A set of comparison values for the first signal pair can be determined by comparing respective frequency component phases or respective frequency component amplitudes. A characteristic of the rotating machinery can then be analyzed using the comparison values.

Abstract: Systems and methods for monitoring rotating machinery are disclosed. Transmitter and receiver antennas can be provided with access to the rotating machinery. At least one receiver signal resulting from at least one transmitter signal that has propagated through a portion of the rotating machinery can be obtained. A first signal pair can be formed from a first receiver signal and a first transmitter signal, or from first and second receiver signals obtained from spatially-separated receiver antennas, or from first and second receiver signals which are attributable to different transmitter signals. Amplitude and phase information of a plurality of frequency components for each signal in the first signal pair can be determined. A set of comparison values for the first signal pair can be determined by comparing respective frequency component phases or respective frequency component amplitudes. A characteristic of the rotating machinery can then be analyzed using the comparison values.

Abstract: A programming strip is adapted to provide updated information to a processor of an instrument. The instrument is adapted to determine the concentration of an analyte. The programming strip comprises non-volatile memory and a communication bus. The non-volatile memory is adapted to store the updated information and being adapted to be in communicatively coupled with the processor of the instrument. The communication bus has at least two lines that are adapted to assist in communicatively coupling the memory and the processor of the instrument.

Abstract: A low-power programmable alarm clock system is provided for use with microprocessor-based reflectance photometer systems for generating an alarm control signal at pre-programmed alarm activation times. The system utilizes an alarm clock circuit which includes means for storing a count value corresponding to the number of predefined time periods existing between a given instantaneous time and a pre-programmed alarm activation time, means for generating a signal corresponding to the passage of each of said predefined time periods and using the generator signal to increment the stored count value each time the predefined time period has elapsed, and means for generating an alarm activation signal when the stored count value has been incremented to a predefined activation value.