BASIC INSTRUMENTATION MEASURING DEVICES AND BASIC …
British units or Pascals (Pa) in metric. As one PSI is approximately 7000 Pa, we often use kPa and MPa as units of pressure. 2.1.2 Pressure Scales Before we go into how pressure is sensed and measured, we have to establish a set of ground rules. Pressure varies depending on altitude above sea level, weather pressure fronts and other conditions.
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