Patent ID: 8195418
Filing Date: 2012-06-05
Classification: G01D,G01L,G01N

Abstract:
1. A measurement instrument comprising: a processor adapted to output a measurement signal embodying a measurement of a physical characteristic; a first sensor connected to the processor and operable to generate a first measurement of the physical characteristic; a second sensor connected to the processor and operable to generate a second measurement of the physical characteristic; and a transition selector connected to the processor and arranged to effect selection of a predetermined transition between the first and second sensors; wherein the processor defines, a first measurement range within which the measurement signal is dependent on the first measurement and is not dependent on the second measurement; and defines a second measurement range that partially overlaps with the first measurement range in a predetermined transition range, and within which the measurement signal is dependent on the second measurement and is not dependent on the first measurement, the first and second ranges meeting at the predetermined transition within the predetermined transition range where the measurement embodied in the measurement signal transitions between the first and second ranges, the first and second measurements being different at the transition, and the measurement embodied in the measurement signal crosses the transition substantially without an abrupt change.