Process automation

Input & Output Modules of a PLC – Types & Applications

The input/output modules act as the signal interface between the monitoring sensors and actuators, and the controller. Additional they provide…

1 year ago

What is the Safety Instrumented Function (SIF)?

The safety instrumented function (SIF) is used to monitor a selected process parameter and takes an executive action to make…

1 year ago

The Role Played By Edge Computing in Manufacturing

Edge computing can be defined as a distributed computing framework that brings enterprise applications closer to data sources like local…

2 years ago

Combustion & Temperature Control for a Direct-Fired Process Heater

The figure below shows the control schemes applied to a direct-fired process heater. Fig: Combustion & temperature control on direct-fired…

2 years ago

How PLC Systems are Protected from Plant Voltages

Internally a PLC typically operates at 5 V dc. The external devices such as solenoids, limit switches, motor starters, etc.…

2 years ago

Key Requirements for Industrial Control Computers

A computer is often used as part of a control system. The input data is typically from the operator’s commands…

2 years ago

Analog vs. Digital Controllers

Analog signals pass continuously through a full range of values for example a measuring device converts the process variable (PV),…

2 years ago

Steam-heated Reboiler Control System

When steam-heated reboilers are used in distillation columns and the heating medium is steam, a flow control loop for the…

2 years ago

Furnace Control System for a Rapidly Changing Demand

Let’s consider the figure below: Figure 1.0 Typical single-fuel cross-limited combustion control system In the system above, the output of…

2 years ago

The Instrumentation for Furnace Control

The figure below shows a typical basic furnace used to raise the temperature of a heat-transfer medium that is used…

3 years ago