文档介绍：BASIC INSTRUMENTATION
MEASURING DEVICES
AND
BASIC PID CONTROL
Science and Reactor Fundamentals – Instrumentation & Control i
CNSC Technical Training Group
Table of Contents
Section 1 - OBJECTIVES.................................................................... 3
Section 2 - INSTRUMENTATION EQUIPMENT ...................... 7
INTRODUCTION ......................................................................... 7
PRESSURE MEASUREMENT.................................................... 7
General Theory................................................................... 7
Pressure Scales.................................................................... 7
Pressure Measurement ........................................................ 8
Pressure Detectors............................................... 9
Differential Pressure Transmitters .................................... 11
Strain Gauges.................................................................... 13
Capacitance Capsule......................................................... 14
Impact of Operating Environment .................................... 15
Failures and Abnormalities............................................... 16
FLOW MEASUREMENT........................................................... 18
Flow Detectors.................................................................. 18
Square Root Extractor....................................................... 25
pensating Flow Detectors ............................ 29
Flow Measurement Errors................................................. 31
LEVEL MEASUREMENT......................................................... 33
Level Measurement Basics ............................................... 33
Three Valve Manifold...................................................... 34