PLC Important Questions and Answers
This post covers the PLC important questions and answers which are discussed in an interview for automation engineer or PLC
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How Capacitive Pressure Sensor Works ?
The Capacitive pressure sensor operates on the principle that, if the sensing diaphragm between two capacitor plates is deformed by
Coriolis Mass Flow Meter as a Multi-Variable Transmitter
Ability to simultaneously measure 3 process variables (mass flow rate, temperature, and density) makes Coriolis flowmeter a versatile instrument indeed.
4–20 mA Process Control Loops
In electrical signalling an analog current loop is used where a device must be monitored or controlled remotely over a
PLC Raw Count Calculation for Pressure Transmitter
Every instrument has at least one input and at least one output. For instruments responding linearly, the correspondence between input
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,
Basics of Loop Checks
The term “loop” can refer to the entire “control loop” from primary element (sensor) through the transmitter, and controller, to
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
Difference between SIS, PLC and BPCS Systems
Safety Integrity Level (SIL) is a measure of safety system performance – not a measure of process risk. The higher
Electric Motor Actuator Parts
The electric actuator uses an electric motor to provide torque to operate a valve. They are quiet, non-toxic and energy
