Abstract
Characteristics of the National Semiconductor Corporation LX1600A pressure transducer are examined with the object of using the device as a short-range altimeter for probing the lowest kilometre or two of the atmosphere. In this application the device is subject to large temperature changes and stringent power restrictions. It is shown that pressure determination to +or-1.5% over ranges of 2 and 20 kPa is possible provided that temperature effects are calibrated out. Operation of the device in a pulsed mode results in a considerable saving in power consumption.
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