John Mulindi

Non-Destructive Testing (NDT) Instrumentation

The increasing requirement to demonstrate the integrity and reliability of engineering materials, products and plant has contributed immensely to the…

1 year ago

Standards Used in Measurements & Their Classifications

For anyone performing a measurement using a particular instrument, it usually matters to know whether the instrument is calibrated or…

1 year ago

Radar Level Transmitters: Operating Principle & Applications

Radar level transmitter basically employs electromagnetic waves to determine the fluid level in a tank. It converts level information into…

1 year ago

Pneumatic Signal Transmission System

Signal transmission in process instrumentation and control systems is largely done via electrical transmission but there are a few areas…

1 year ago

How Redundancy is Achieved in Process Plants

In similar way to electronic systems, redundancy is extensively employed technique for enhancing the reliability of many industrial plants and…

1 year ago

How Interferometers are used as Position Sensors

Interferometer sensors employ energy in the form of light or sound to make precise position/location measurements. There are a number…

1 year ago

Phase Locked Loop High Precision Motor Speed Control System

AC generators can be utilized in high precision control systems. The AC generator rotor is rotated by the rotating shaft…

1 year ago

Principle of Operation of Magnetostrictive Position Sensors

Magnetostrictive sensors detect the location of a magnetic ring that slides along a conductive metal tube; in other words this…

1 year ago

How to Connect Discrete Sensors to PLC Inputs

Discrete Sensor Outputs   Basically sensor outputs can be categorized into two types: discrete also referred to discrete or logic…

1 year ago

Photoelectric Pressure Transducer Operation

The photoelectric pressure transducer uses a phototube and a light source (either a stable source of light or ac modulated…

1 year ago