Process Interlocks and Trips
Process Interlocks and Trips prevent those control actions which might initiate a hazard from being undertaken by an operator or process control system
What is Safety Control System ?
A safety control system or device is deemed to be safety related if it provides functions which significantly reduce the risk of a hazard, and in combination with other risk…
What is Instrumentation Control System ?
An instrumentation control system is an electrical, electronic, or programmable electronic system (E/E/PES) which may perform some or all of the following functions: Monitoring, recording and logging of plant status…
Setpoints and Alarms in Control System
Setpoints are selected with sufficient margin between the maximum operating limits for the process variable and the nominal trip setpoints to allow.
Raw Counts to Engineering Units : Conversion Formula
Formula for converting PLC Raw Counts into engineering units or process variable. Check this article how-to convert sensor raw counts in a PLC system.
Web-based SCADA HMI Software
Web-based SCADA HMI software allows us to create user interfaces to display and interact with real time data on any device with a web browser.
Ultrasonic Testing (UT) : Principle, Advantages, Disadvantages
Ultrasonic testing (UT) is a non-destructive testing techniques based on the propagation of ultrasonic waves in the object or material tested. Ultrasonic Testing In most common UT applications, very short…
PLC Ladder Logic for Opposite Acting Control Valves Application
PLC programming for opposite acting control valves application using ladder logic diagrams.
Normally-Closed Contacts for Stop Buttons
This article teach you how-to use normally-open and normally-closed for inputs in PLC program. Why PLC uses Normally-Closed contacts for Stop Buttons?
Stepper Motor MCQ
Stepper Motor MCQ Stepper Motor or Step Motor Multiple Choice Questions How does a Stepper Motor move ? A. Electrical Pulse B. Continuous Applied Voltage C. Alternates from A and…
