Resistance box The box which contains the resistors which can cover a wide range of values for estimating and comparing the resistance is known as the resistance box. Features of Resistance box The accuracy of the resistance box is very
Measurement of Thermal Conductivity | Gas Analyzer
A thermal conductivity gas analyzer is used to measure the chemical purity of a gas. The working of this type of analyzer is based on the difference in heat conductivity among gases. Fig. 1 shows the Basic thermal conductivity gas
Neutron Detection
The neutrons have the following property as they do not carry any charge. It is very difficult to detect neutrons. So, indirect methods are employed to detect neutrons. This consist of an arrangement where alpha or beta particles or gamma-rays
Microphones | Measurement of Sound | Applications
Definition of Microphone A microphone is a transducer that converts sound into an electrical signal. OR A microphone is a special type of pressure transducer converting acoustic energy (pressure waves) into electrical energy. A microphone is nicknamed as mic or
Hygrometer | Measurement of Humidity | Applications
In this article, we will learn about hygrometers and its types. Let’s begin with the definition of the hygrometer. Hygrometer A hygrometer is an instrument that measures the humidity directly. Now discuss some terms. Humidity It is the measure of water
Proximity Sensors | Working & Applications
You have heard about proximity sensors in your daily life that are commonly used in mobile or smartphones, tablets, etc. Proximity sensors are commonly used on mobile devices to detect if someone is in nominal range. A proximity sensor is
Rotary Variable Differential Transformer (RVDT) Working Principle & Applications
Figure. RVDT In the previous article, we have learned about Linear variable differential transformer (LVDT). Rotary Variable Differential Transformer (RVDT) is a variation of LVDT and used to sense angular displacement. It is a passive transducer. In short, RVDT provides
Dead Time, Dead Zone and Resolution
Dead Time It is defined as the time required by a measurement system to begin to respond to a change in the measurand. It is basically the time before the instrument begins to respond after the measurand has been changed.
Difference between Analog & Digital Instrument
The basic difference between Analog & Digital Instrument is given below. S.No. Aspects Analog Instrument Digital Instrument 1. Information form As the position of pointer on a dial/scale As a number 2. Possibility of human error Exists Does not exist 3. Best
Inductive Transducers Working Principle & Applications
Fig. Inductive Transducers (source: eddylab.com) Inductive Transducers In Inductive transducers, the basic principle is that self-inductance of a single coil or the mutual inductance between two coils is changed by a quantity to be measured i.e. measurand. Usually,
