Instrumentation and Control Devices

100%

One. Master element

Two. Time-delay starting or closing relay

Three. Checking or interlocking relay

Four. Master contactor

Five. Stopping device

Six. Starting circuit breaker

Seven. Rate-of-rise relay

Eight. Control power disconnecting device

Nine. Reversing device

Ten. Unit sequence switch

Eleven. Multifunction device

Twelve. Overspeed device

Thirteen. Synchronous-speed device

Fourteen. Underspeed device

Fifteen. Speed or frequency matching

Sixteen. Reserved for future application

Seventeen. Shunting or discharge switch

Eighteen. Accelerating or decelerating device

Nineteen. Starting-to-running transition contactor

Twenty. Electrically operated valve

Twenty-one. Distance relay

Twenty-two. Equalizer circuit breaker

Twenty-three. Temperature control device

Twenty-four. Volts per hertz relay

Twenty-five. Synchronizing or synchronism-check device

Twenty-six. Apparatus thermal device

Twenty-seven. Undervoltage relay

Twenty-eight. Flame detector

Twenty-nine. Isolating contactor

Thirty. Annunciator relay

Thirty-one. Separate excitation device

Thirty-two. Directional power relay

Thirty-three. Position switch

Thirty-four. Master sequence device

Thirty-five. Brush-operating or slip-ring short circuiting device

Thirty-six. Polarity or polarizing voltage device

Thirty-seven. Undercurrent or underpower relay

Thirty-eight. Bearing protective device

Thirty-nine. Mechanical condition monitor

Forty. Field relay

Forty-one. Field circuit breaker

Forty-two. Running circuit breaker

Forty-three. Manual transfer or selector device

Forty-four. Unit sequence starting relay

Forty-five. Atmospheric condition monitor

Forty-six. Reverse-phase or phase-balance current relay

Forty-seven. Phase-sequence or phase-voltage voltage relay

Forty-eight. Incomplete sequence relay

Forty-nine. Machine or transformer thermal relay

Fifty. Instantaneous overcurrent relay

Fifty-one. AC time overcurrent relay

Fifty-two. AC circuit breaker

Fifty-three. Excited or DC generator relay

Fifty-four. Turning gear engaging device

Fifty-five. Power factor relay

Fifty-six. Field application relay

Fifty-seven. Short-circuiting or grounding device

Fifty-eight. Rectification failure relay

Fifty-nine. Overvoltage relay

Sixty. Voltage or current balance relay

Sixty-one. Density switch or sensor

Sixty-two. Time-delay stopping or opening relay

Sixty-three. Pressure switch

Sixty-four. Ground detector relay

Sixty-five. Governor

Sixty-six. Notching or jogging device

Sixty-seven. AC directional overcurrent relay

Sixty-eight. Blocking relay

Sixty-nine. Permissive control device

Seventy. Rheostat

Seventy-one. Level switch

Seventy-two. DC circuit breaker

Seventy-three. Load-resistor contactor

Seventy-four. Alarm relay

Seventy-five. Position changing mechanism

Seventy-six. DC overcurrent relay

Seventy-seven. Telemetering device

Seventy-eight. Phase-angle measuring or out-of-step protective relay

Seventy-nine. AC reclosing relay Eighty. Flow switch

Eighty-one. Frequency relay

Eighty-two. DC load-measuring reclosing relay

Eighty-three. Automatic selective control or transfer relay

Eighty-four. Operating mechanism

Eighty-five. Carrier or pilot-wire receiver relay

Eighty-six. Lockout relay

Eighty-seven. Differential protective relay

Eighty-eight. Auxiliary motor or motor generator Eighty-nine. Line switch

Ninety. Regulating device

Ninety-one. Voltage directional relay

Ninety-two. Voltage and power directional relay

Ninety-three. Field-changing contactor

Ninety-four. Tripping or trip-free relay

Used for specific applications on Individual installation where none of the assigned numbered form one to ninety-four suitable

Ninety-nine. Supervisory control and indication

Overview

A comprehensive enumeration of control and instrumentation devices utilized in automation and industrial environments, focusing on their operational roles and significance in maintaining system functionality. It serves as a reference guide for engineers and technicians.

Key Points

1The document enumerates 99 different control devices and their functions
2It serves as a reference for selecting appropriate instrumentation in specific applications
3Each device is categorized by its operational role in control systems
4The document aids professionals in understanding device capabilities and applications.

Details

Category: Technology and Engineering

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