Digital multimeter and its features
Digital multimeters, as stated in previous research, are the most modern type of equipment for measuring electrical parameters. Multimeters have evolved over time in terms of accuracy, display of values, and communication with other related equipment. The existence of large and heavy sizes could only measure the three basic parameters of voltage current and resistance.
Today’s professional and advanced digital multimeters, along with measuring voltage and current in different measuring ranges, measure resistance in the range of milliohms to megaohms with very high accuracy. Measurement of other electrical parameters such as frequency and frequency cycle, measurement of capacitance and conduction, short circuit test, connection of wires and diodes, transistors and other basic features of multimeters included.
With the increasing advancement of technology, processors and microcontrollers have played an essential and important role in managing the performance of all electronic devices. Multimeters have also benefited from this technology and have completely changed in terms of dimensions and efficiency. Communicate with other meters and provide a good analysis of the condition and performance of the device. Measuring environmental parameters such as temperature and humidity is another important feature that exists in today’s advanced digital multimeters. Temperature and humidity are one of the most important factors in reducing or increasing the life of electronic components.
Voltage measurement in multi-digital
Professional digital multimeters have the ability to measure AC and DC voltage simultaneously. To do this, in most multimeters, set the selector switch to the desired voltage. Connect the connector to the relevant connectors, then the voltage as shown below. Measure the desired. In most multimeters, when operating the AC voltage, the operating frequency of this voltage also appears on the screen.
Some of these equipments have the ability to measure the sum of works and the combination of AC and DC, which you can see in the figure below.
Measuring alternating and direct current
To measure the current according to the previous procedure, set the selector to the desired parameter. Connect the special probes to the terminal. Measure the current in different ranges according to the figure below. To measure high currents, all professional digital multimeters have the ability to connect clamp meters or pliers multimeters. In the pictures below, you can see two examples of these models.
Resistance measurement by digital multimeter in ohms and milliohms
For measuring resistance by conventional multimeters, resistance measuring ranges are divided around the selector, and by adjusting this range, the measurement accuracy reaches the maximum level supported by the device, but in professional models made in large American Flock companies. And Japan Hyuki and گیری Measurement ranges are automatically measured in milliohm, ohm, kilo ohm and mega scales
To view the complete Persian training for working with digital pliers and professional pliers true RMS See page below.
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