Electronic Control Fundamentals - Honeywell AUTOMATIC CONTROL Engineering Manual

Introduction
Definitions
Typical System
C o m p o n e n t s
Electr o nic Contr oller Fundamentals............................................................................................................ 129
Typical System Applica tion
............................................................................................................ 120
............................................................................................................ 120
............................................................................................................ 122
............................................................................................................ 122
Sensors ............................................................................................... 122
Temperature Sensors ...................................................................... 122
Resistance Temperature Devices ............................................... 122
Solid-State Resistance Temperature Devices ............................ 124
Thermocouples ........................................................................... 125
Transmitter/Transducer ............................................................... 125
Relative Humidity Sensor ................................................................ 125
Resistance Relative Humidity Sensor ......................................... 125
Capacitance Relative Humidity Sensor ...................................... 125
Temperature Compensation ................................................... 126
Condensation and Wetting ..................................................... 126
Quartz Crystal Relative Humidity Sensor .................................. 126
Pressure Sensors ........................................................................... 127
Controller ............................................................................................. 127
Input Types ..................................................................................... 127
Temperature Controllers ............................................................. 128
Relative Humidity Controllers ..................................................... 128
Enthalpy Controllers ................................................................... 128
Universal Controllers .................................................................. 128
Control Modes ................................................................................. 128
Output Control ................................................................................. 128
Output Devices .................................................................................... 128
Two-Position ................................................................................... 128
Modulating ...................................................................................... 128
Transducer ...................................................................................... 129
Indicating Device ................................................................................. 129
Interface With Other Systems ............................................................. 129
General ................................................................................................ 129
Power Supply Circuit ........................................................................... 129
............................................................................................................ 130
119

ELECTRONIC CONTROL FUNDAMENTALS

Electronic Control
Fundamentals
ENGINEERING MANUAL OF AUTOMATION CONTROL
Contents