Hair Hydrometer Principle
Due to humidity, several materials experience a change in physical, chemical and electrical properties. This property is used in transducer that are designed and calibrated to read relative humidity directly. Hair…
Dew Point Meter Principle
Dew Point Meter Principle By Cooling at constant pressure if the temperature of air is reduced, the water-vapour in the air will start to condense at a particular temperature. This…
Flow Nozzle Principle, Advantages, Disadvantages, Applications
When a flow nozzle is placed in a pipe and it causes a pressure drop which varies with flow rate. Study about Flow Nozzle Advantages, Disadvantages.
D.C Tachogenerator Principle
The D.C Tachogenerators is a type of electrical type’s tachogenerators which can also be used for speed measurement. The D.C tachogenerator is shown in below figure. The armature of the…
Types of Resistors
A very basic component that all the engineers including instrumentation discipline should know about. A resistor is a passive component. It introduces resistance. Resistance is defined as the property of…
Mechanical Torsion Meter Principle
Mechanical torsion meter is used to measure torque developed by a machine. Principle of mechanical torsion meter When a shaft is connected between a driving engine and driven load, a…
Optical Torsion Meter Principle
Basic Principle Due to torque, an angular twist (angular displacement) occurs on the shaft between its ends. This angle of twist is measured by using optical means where in angular…
Helix Bimetallic Thermometer Principle
This article is a continuation of my previous post on Bimetallic Thermometer Principle of Helix Bimetallic Thermometer: When a bimetallic helix fixed at one end and free at the other…
Spiral Bimetallic Thermometer Principle
Principle of Spiral bimetallic thermometer When a bimetallic spiral fixed at one end and free at the other end is subjected to a temperature change, the free end of the…
Types of Angular Velocity Measurement
Angular velocity is measured using devices called tachometers. Tachometers are instruments that measure angular speed by registering anyone of the following Number of rotations during the contact period (or) Number…
