Fine Wire Strain Gauge Principle
These gauges are directly bonded (that is pasted) on the surface of the structure under study. Hence they are termed as bonded strain gauges. The three types of bonded strain…
Sling Psychrometer Principle
Sling Psychrometer is used to measure both the dry bulb and wet bulb temperatures at time. These temperatures are a measure of humidity content in air. Description of Sling Psychrometer…
Humidity Sensing Absorption Hydrometer Principle
A change in resistance with change in humidity is taken as a measure of humidity. This is type of Electrical Humidity sensing Absorption Hydrometer, know more about mechanical humidity sensing…
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…
