Transcription of BASIC INSTRUMENTATION MEASURING DEVICES AND BASIC …
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BASIC INSTRUMENTATION MEASURING DEVICES AND BASIC PID CONTROL Science and Reactor Fundamentals INSTRUMENTATION & Control i CNSC Technical Training Group Revision 1 January 2003 Table of Contents Section 1 - 3 Section 2 - INSTRUMENTATION 7 INTRODUCTION .. 7 PRESSURE MEASUREMENT .. 7 General Theory .. 7 Pressure 7 Pressure Measurement .. 8 Common Pressure 9 Differential Pressure Transmitters .. 11 Strain Gauges .. 13 Capacitance Capsule .. 14 Impact of Operating Environment .. 15 Failures and Abnormalities.
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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