What is an electric meter? Structure, uses and reputable electricity meter models

An electric meter, also known as a multimeter, is an indispensable tool in measuring and testing electrical parameters. With the continuous development of technology, today’s electric meter models have become more diverse and convenient than ever. In this article, RX Tradex will provide detailed information about the concept of “what is an electric meter“, the structure, uses of electric meters, and a look at some reputable multimeter models, helping businesses have an overview and choose the right device for their needs.

1. What is an electricity meter?

An electric meter, also known by other names such as a multimeter or a universal power meter, is a multifunctional electrical measuring device. This device is specifically used to test and determine the parameters of direct current (DC) or alternating current (AC) such as: amperage, voltage, resistance, capacitance, frequency, and even diode testing.

Multimeters are generally classified into two main groups: analog multimeters and electronic multimeters.

• Needle multimeter: This is a traditional type of electricity meter, often used to measure basic parameters such as amperage, voltage, and resistance. The measurement results are displayed through a needle on an arc scale.
• Electronic multimeter: This is the most common type today, which operates on battery power. The measurement results are displayed as numbers on the LCD screen. Compared to analog watches, electronic multimeters are equipped with more features, meeting the diverse testing needs of modern electrical and electronic applications.

2. Structure of electricity meter

2.1. Structure of a multimeter

Analog multimeters have a distinctive design with key parts including:

• Peripheral Parts: Indicator, Arc Scale, Static 0 Point Adjustment Screw, AC Voltage Gauge, Positive Gauge or Positive Semiconductor (P), Common Gauge (Com) or Negative Semiconductor (N), Front Case, Indicator Face, Glass Face, Back Case, Resistance Adjustment Button (0Ω ADJ), Scale Selection Switch,  and an AC current meter.
• Internal circuit: Includes probe plug (OUTPUT and COM), display system with indicator block (M), power block, thermal compensation resistance system, protection block, and measurement block.

2.2. Structure of an electronic multimeter

Digital digital multimeters have a modern structure with key components such as:

• Peripheral components: Measurement result holding button, Power (Power) button, numeric display, small current meter, large current meter, common (COM), resistance and voltage probe, along with knobs that switch the measurement function such as the gain factor of the transistor.
• Internal electronic circuitry: Includes electronic signal processing circuit blocks, overload protection system, and auxiliary components that ensure measurement accuracy.

Note: Not all power meters are fully equipped with the above parts. Depending on the design of each manufacturer and the specific version, the components can be simplified or other functions can be added.

3. Uses of electric meters

An electrical meter is an important device that helps measure and determine the parameters of the current. Specifically, this device is used to:

3.1. Uses of Needle Multimeters

Analog multimeters mainly perform three main functions:

• Measure the voltage difference.
• Measure resistance.
• Measure the current strength.

3.2. Uses of digital digital multimeters

In addition to basic functions such as measuring voltage, resistance, and amperage, today’s electronic multimeter models are equipped with more advanced features such as:

• Circuit Junction Inspection: Helps detect open circuits or short circuits in the electrical system.
• Small current and voltage measurements: Thanks to the power amplifier, the device can measure even small values even with high resistance.
• Inductance and capacitance measurement: Useful in the inspection, installation, and repair of electronic circuits.
• Diode and transistor testing: Helps evaluate the operating status of semiconductor components.
• Temperature Measurement Support: When combined with a thermocouple, the meter can measure and display the temperature.
• Frequency measurement, sound amplification: Suitable for circuit calibration in devices such as radios.
• Oscillator Function: Helps to measure low frequencies.
• Specialized test kits: Such as testing automotive and telephone circuits.
• Measurement Retention: Useful for monitoring and analyzing measurement data.

4. What kind of electricity meter is good?

Here are two outstanding models of electricity meters, each with its own advantages:

4.1. Kyoritsu 1009 Multimeter

Kyoritsu 1009 is an electronic multimeter with a compact and ergonomic design. Manufactured using advanced Japanese technology, this device stands out for its high precision. The 4000-point LCD screen makes it easy for users to read the measurement results. The Kyoritsu 1009 offers both automatic and manual measurement functions, and has an automatic shut-off mode after 30 minutes of inactivity to conserve battery life. This is the ideal choice for those who need an accurate and efficient measuring device for their work.

4.2. Hioki Pocket Multimeter 3244-60

The Hioki 3244-60 is a pocket multimeter, designed to be easily carried around with a weight of just 60g. The outer shell of the device is made of heavy-duty rubber, which provides good protection in case of a fall. Included with the watch is a hard plastic case to protect the machine and a 15mm long gold-plated dipstick. The wide LCD screen provides clear and accurate measurements. The watch is also equipped with overload protection up to 500V for resistance and current, ensuring durability and safety during use.

Both models are excellent choices in power metering applications, with outstanding features that help meet the diverse needs of users.

5. Conclusion

Hopefully, the above information has helped you better understand “what is an electricity meter”, understand the structure and use of each type of electricity meter to choose for yourself a device that suits your actual needs.

In addition, if you are operating in the electronics sector and want to stay up-to-date with the latest technology trends, don’t miss NEPCON Vietnam 2024 – the largest and only electronic  exhibition on SMT, Inspection Technology, Equipment and Supporting Industries for Electronics Manufacturing in Vietnam organized by RX Tradex Vietnam,  will take place from 11-13/09 at the Viet-Soviet Friendship Palace (I.C.E), Hanoi. This is an opportunity for businesses to meet partners, explore advanced solutions in the field of electronics industry and expand business networks. Register now for exhibitors or visitors.