Sensors

Variable Capacitance Sensors

Several mechanical input sensors, as well as some sensors which measure humidity or temperature, operate by the transduced quantity causing…

2 years ago

The Principle of Operation of a Vortex Flowmeter

If a bluff (non-streamlined) body is placed in a flow, vortices detach themselves at regular intervals from the downstream side…

2 years ago

The Principle of an Optical Pyrometer Temperature Sensor

A heated object emits electromagnetic radiation. At temperatures below approximately 400 °C this radiation can be felt as heat. As…

2 years ago

Types of Ultrasonic Non-Destructive Testing (NDT) Techniques

The technology of ultrasonic testing has been used by production and industry since the development of the radio engineering process.…

3 years ago

The Principle of Operation of Optical Encoders

An encoder is a device that provides a digital output as a result of an angular or linear displacement. The…

3 years ago

The Construction & Principle of Operation of Load Cells

A load cell converts a force (usually the gravitation force from an object being weighed) to a strain which can…

3 years ago

The Conditioning of Thermocouple Sensor Voltages

Consider the circuit below: Figure 1(a) thermocouple signal amplifying circuit From the figure above, the sensing junction and reference junction…

4 years ago

RTD 2, 3, 4 Wire Sensor Connections

The resistance temperature devices (RTD) can be connected directly to the controller peripheral amplifiers using 2-wire, 3-wire or 4-wire lead…

4 years ago

Instrumentation Sensors and Transducers – Multiple Choice Questions & Answers (MCQ4)

The Answers have been provided at the end of the Questions: Q1. Which of the following sensors is used to…

4 years ago

Types of Sensors used in Measurement and Process Control

A sensor is an element in a measurement system that detects the magnitude of a physical variable or parameter and…

4 years ago