Control and Instrumentation Engineer Study Guide
Are you an Control and Instrumentation Engineer ? Recently joined as a Fresher or Trainee engineer in Instrumentation department ? then this article helps you to get an overall outlook
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Instrumentation Engineering Basics
BASICS OF TRIPS, INTERLOCKS, PERMISSIVES & SEQUENCES
This post provides information about basics of Trip, Interlock, Permissive and Sequences which are regularly used in instrumentation control systems like ESD, DCS, PLC etc. Trip: The term Trip refers to an action that
Transmitters 4-20mA Current Failure Alarm Limits
4-20 mA instrumentation and controls usually support a signal range slightly below 4 mA and above 20 mA. For transmitters, current values below 4 mA and above 20 mA are
Basics of Loop Checks
The term “loop” can refer to the entire “control loop” from primary element (sensor) through the transmitter, and controller, to the valve positioner, and the final control element (valve). The
How a 4-20mA Transmitter Works ?
A sensor is an input device that provides a usable output in response to the input measurand. A sensor is also commonly called a sensing element, primary sensor, or primary detector.
4-20 mA Transmitter Wiring Types : 2-Wire, 3-Wire, 4-Wire
Transmitters are available with a wide variety of signal outputs. The 4-20mA analogue signal is by far the most commonly used in industrial applications. Several physical 4-20mA wiring options exist.
Loop Check of 4-20mA or HART Transmitters
Do you know about Loop Check of 4-20mA or HART Transmitters or Instruments Loop check procedure ? This article provides the basic info about loop checks of field instruments. Loop Check
Sink or Source? Normally Open or Normally Closed?
We discuss about concepts of Sink or Source used in electrical circuits or in PLC wiring. Also we deal with basics of normally open contact or normally closed contact which
Troubleshooting a 4-20mA Current loop
The basic layout of every 4-20mA loop consists of a power supply, a transmitter, and passive loop devices. The supply produces the energy to run the loop. The transmitter controls
What is an O-Ring?
What is an O-Ring? An O-ring is a torus, or doughnut-shaped ring, generally molded from an elastomer, although O-rings are also made from PTFE and other thermoplastic materials, as well