Low pressure (.2 to 5 psig) is one of the most rapidly growing segments of the pressure measuring market. It is, unfortunately, very difficult to make accurate calibrations of high accuracy gauge pressure instruments in this range. This paper discusses some problems and solutions found in making these types of calibrations. Techniques and types of necessary equipment for performing proper calibrations are discussed. The improved methods and the benefits in reduced uncertainty and time required for calibration are also discussed.
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