Static Sensitivity, Linearity and Hysteresis

M.Tech. Measurement

Static Sensitivity Static Sensitivity of an instrument or an instrumentation system is defined as the ratio of the magnitude of the output signal or response to the magnitude of an input signal or the quantity being measured. The reciprocal of sensitivity is defined as inverse sensitivity or deflection factor. The sensitivity of an instrument should […]

Soft and Hard Magnetic Materials

Material Science

Soft Magnetic Materials These materials are easy to magnetise and demagnetise. These materials favour rapid switching (it means high frequency) of magnetism to applied ac field. These materials have low retentivity. Low coercivity. High permeability High magnetic saturation Low hysteresis losses because of the lesser area of the hysteresis loop. These materials are used for […]

Reproducibility, Drift and Repeatability


In this article, we will learn about two important terms Reproducibility and Drift. These two terms are important for instruments in measurements. Reproducibility Reproducibility is defined as the degree of closeness with which a given value may be repeatedly measured. Drift Drift is the gradual shift in the indication or record of the instrument over […]

Errors in Measurement and Types of Errors


In this article, we will understand the concept of errors in measurement, types of errors in measurement in detail. This is most important and starting topic in measurements. True Value It is defined as the average value of an infinite number of measured values when average deviation due to various contributing factor approaches to zero. It […]

What are Data Loggers | Advantages & Applications


Data loggers are nowadays used by Environmental consultants, energy auditors, building managers, research scientists, engineers for recording data in many applications. We will know in detail about data loggers, its anatomy, working principle, advantages and applications. Data Logger It is an electronic instrument that records measurements at set intervals over a period of time. Data loggers […]

Maxwell’s Right Hand Grip Rule And Right Handed Cork Screw Rule

Electrical Laws

When the current flows to the conductor, a magnetic field is produced around it. The nature of magnetic field around a straight current carrying conductor is like concentric circles. The center of these concentric circle is axis of the current carrying conductor. The direction of these circular magnetic lines is dependent upon the direction of flow […]