Circular Chart Recorder Working Principle: Circular Chart Recorder Working Principle – As the name implies, the data is recorded on a flat circular chart. The basic assembly of a single pen circular chart recorder is shown in Fig. 12.8. It consists of a measuring element, an operating mechanism, a chart drive, and a recording device, […]
Circular Chart Recorder Working Principle Read More »
Null Type Recorder: These Null Type Recorder Working Principle of self-balancing or null conditions. When an input is given to the measuring circuit of the recorder from a sensor or transducer, it upsets the balance of the measuring circuit, producing an error voltage which operates some other device, which in turn restores the balance or brings
Null Type Recorder Working Principle Read More »
Galvanometer Type Recorder: The D’Arsonval movement used in moving coil indicating instruments can also provide the movement in a Galvanometer Type Recorder. The D’Arsonval movement consists of a moving coil placed in a strong magnetic field, as shown in Fig. 12.2(a). In a galvanometer type recorder, the pointer of the D’Arsonval movement is fitted with
Galvanometer Type Recorder Read More »
Strip Chart Recorder Working Principle: Strip Chart Recorder Working Principle are those in which data is recorded on a continuous roll of chart paper moving at a constant speed. The recorder records the variation of one of more variables with respect to time. The basic element of a Strip Chart Recorder Working Principle consists of
Strip Chart Recorder Working Principle Read More »
Definition of Recorder: Definition of Recorder – A recorder is a measuring instrument that displays a time-varying signal in a form easy to examine, even after the original signal has ceased to exist. Recorders generally provide a graphic recod of variations in the quantity being measured, as well as an easily visible scale on which the
Definition of Recorder Read More »
Wheatstone Bridge Diagram: A Wheatstone Bridge diagram in its simplest form consists of a network of four resistance arms forming a closed circuit, with a dc source of current applied to two opposite junctions and a current detector connected to the other two junctions, as shown in Fig. 11.1. Wheatstone Bridge diagram are extensively used
Wheatstone Bridge Diagram Read More »
pH Measurement Methods: pH is defined as the negative logarithm of the active hydrogen ion. It is a measure of the acidity or alkalinity of an aqueous solution. The pH scale runs from 0 – 14, with pH 7, the neutral point, being the pH of pure water at 25°C. The lower the pH value,
pH Measurement Methods Read More »
Megger Circuit Diagram: Another common method of measuring resistances above 50 M Ω is the Megger Circuit Diagram (megaohmmeter) shown in Fig. 10.23(a). This instrument is used to measure very high resistances, such as those found in cable insulations, between motor windings, in transformer windings, etc. Construction and Working Principles: Normal (shop) VOMs do not
Megger Circuit Diagram Read More »
Stroboscope Working Principle: The stroboscope working principle uses a high intensity light which flashes at precise intervals. This light may be directed upon a rotating or vibrating object. The stroboscopic effect is apparent when the rotational or vibratory speed is in a proper ratio with the frequency of the light flashes. Most stroboscope working principle
Stroboscope Working Principle Read More »
What is Wave Analyzer?: It can be shown mathematically that any complex waveform is made up of a fundamental and its harmonics. It is often desired to measure the amplitude of each harmonic or fundamental individually. This can be performed by instruments called wave analyzers. This is the simplest form of analysis in the frequency
What is Wave Analyzer? Read More »
