AC Motor Speed Control
AC induction motors are based on the principle of a rotating magnetic field produced by a set of stationary windings (called stator windings) energized by AC power of different phases.…
DC Motor Speed Control
DC electric motors generate torque by a reaction between two magnetic fields: one field established by stationary “field” windings (coils), and the other by windings in the rotating armature. Some…
Industrial Instrumentation Questions & Answers
Industrial Instrumentation Questions & Answers Measurement of Force, Torque & Speed What is a Stroboscope ? The stroboscope is a simple, portable manually operated device which may be used for…
What we need to Know before Tune a PID Controller ?
We know the benefits of robust PID control Tuning. Increased productivity, decreased equipment strain, and increased process safety are some of the advantages touted of proper PID tuning. What is…
Steady-State Process Gain
When we speak of a controller’s gain, we refer to the aggressiveness of its proportional control action: the ratio of output change to input change. However, we may go a…
Optical Flow Meter Principle
A recent development in industrial flow measurement is Optical Flow Meter which uses light to measure the velocity of a fluid through a pipe.
Why You Need FDA Process Validation and How to Do It Right ?
Why You Need FDA Process Validation and How to Do It Right ? It’s important for pharmaceutical and biopharmaceutical companies to maintain quality and safety standards across products intended for…
What is a Ultrasonic Flow Meter?
Ultrasonic flow meter measures fluid velocity by passing high-frequency sound waves along the fluid flow path.
Variable Motor Speed Control
An alternative to control valves for adjusting fluid flow is to regulate the speed of the machine(s) motivating fluid to flow. In the case of liquid flow control, this would…
What is a Positive Displacement Flow Meter?
Positive Displacement Flow Meter are rotary in nature, meaning each shaft revolution represents a certain volume of fluid has passed through meter.
