Instrumentation & Controls

instrumentation banner 3Instrumentation is the ability to control a process by measuring the value or the parameters set for the process. This can include control, flow, level, pressure and temperature.

 

 

 

 

 

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Instrumentation & Controls standards

API Standards

  • API RP 521 - Guides for Pressure Relief and Depression Systems
  • API RP 550 - Manual on Instrumentation of Refinery Instruments and Control Systems
  • API RP 551 - Process Measurement Instrumentation
  • API RP 552 - Transmission Systems
  • API RP 554 - Process Instruments and Controls
  • API RP 598 - Valve Inspection and Testing

ISA Standards

  • ISA 5 - Documentation of Measurement, and Control Instruments and Systems
  • ISA 5.1 - Instrimentation Symbols and Identification
  • ISA 12 - Electrical Equipment for Hazardous Locations
  • ISA 18 - Instrument Signals and Alarms
  • ISA 37 - Instrument Transducers
  • ISA 50 - Signal Compatibility of Electrical Instruments
  • ISA 60 - Control Centers
  • ISA 75 - Control Valve Standards
  • ISA 82 - Electrical and Electronic Instrumentation
  • ISA 90 - Instrumentation and Computer Grounding
  • ISA 91 - Criticality Ranking for Instrumentation
  • ISA 99 - Industrial Automation and Control Systems Security
  • ISA 100 - Wireless Systems for Automation
  • ISA 101 - Human-Machine Interface
  • ISA 104 - Device Integration
  • ISA 106 - Process Automation for Continuous Process Operations
  • ISA 107 - Advanced Measurement Techniques for Gas Turbine Engines
  • ISA 108 - Intelligent Device Management

 

Instrumentation & Controls Glossary

A

  • Analog  -  A continuous electronic variable signal caring information.
  • Analog Output  -  A signal coming from a PLC into an instrument or controller.

B

C

  • Car Seal  -  Specified on instrument bubbles on Piping and Instrumentation Diagram.

D

  • Differential Pressure Flowmeter  -  There are many different types of instruments for measuring pressure.  The functions of these instruments are to monitor and control pressure in a process stream.

E

  • Electric Current  -  The rate of flow of electricity in a circuit, measured in amperes.

F

  • Flowmeter  -  An instrument used to measure the flow rate of gasses and liquids.

G

H

I

J

K

L

M

  • Meter  -  A device that provides a measurement for the flow change in a gas or liquid.

N

O

P

  • Position Switch  -  Provides a discrete input to the PLC.  The position switch is used to confirm the position of a critical component in the process, often a valve.
  • Pressure Indicating Transmitter  -, abbreviated as PT and PIT, is an instrument for measuring, controlling and indicating positive, negative or differential pressures of different fluids.
  • Pressure Indicator  -  It is a field instrument that requires little to no maintenance.

Q

R

S

T

  • Temperature Controller  -  An instrument designed to minimize operator input or involvement.  A temperature controller has an input that is connected to a temperature source such as an RTD or other type of temperature element.
  • Temperature Recorder  -  A device that records the temperature of a process.  This could be a data logger or a temperature transmitter capable of storing data.
  • Temperature Switch  -  Provides alarm, shutdown and control for many types of processes.  Switch that activates when a certain temperature condition is met.
  • Thermowell  -  Used in temperature measurement and provide isolation from the temperature sensor and the process fluid. 

U

V

W

X

Y

Z

 

 

Piping Designer Logo 1

Display #
Title
Analog
Analog Output
Automatic Well Test
Car Seal
Discrete Input

Tags: Glossaries