Differenciálmérket

Differenciálmérket, often translated as differential measurement or differential gauging, refers to a technique used to measure the difference between two physical quantities. This is in contrast to absolute measurement, which determines the magnitude of a single quantity. Differential measurement is particularly useful when the absolute values are difficult to determine directly, or when the focus is on variations or deviations.

Common applications of differential measurement are found in metrology, the science of measurement. For instance, in manufacturing, differential gauges are used to check for tolerances or deviations from a standard size. This could involve comparing a manufactured part against a master gauge to ensure it falls within acceptable limits. In electrical engineering, differential voltage measurements are used to cancel out unwanted common-mode noise, allowing for the precise measurement of small signals. Similarly, in mechanical engineering, differential pressure sensors are employed to measure the pressure drop across a component, indicating factors like flow rate or resistance. The principle relies on comparing two signals or quantities and outputting their difference, often amplifying small variations that would be lost in an absolute measurement.