There are three kinds of electrical measurement methods, and today, we will give you a brief introduction by billion Leride.
    1Direct measurement:The measured value is obtained by measuring the measured scene with the instrument calibrated in advance according to the standard quantity, or by comparing the standard quantity directly with the measured value, which is called direct measurement. For example, using a thermometer to measure temperature. The advantage of this method is that the measurement process is simple and rapid.
    2Indirect measurement:Using direct measurement methods to measure several physical quantities that have an exact functional relationship with the measured quantity, and then calculate the measured value through the functional relationship, called indirect measurement. For example, resistance is measured by voltammetry. The measurement process of this method is complex and time-consuming, and it should generally only be used in the following cases:Direct measurement is inconvenient;Indirect measurement has less error than direct measurement;Lack of direct measuring instruments.

    3, combined measurement:When measuring two or more related unknowns, the measured value is obtained by changing the measurement conditions, solving a set of joint equations through the data obtained by direct measurement and indirect measurement, called combined measurement.

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