Part 1 Bagian bagian Multimeter

Summary

This tutorial introduces the components and functions of an analog multimeter (avometer), a tool used to measure electrical properties like voltage, current, and resistance. It covers key parts such as the needle, scale, zero adjust screw, and the terminals for connecting test leads. The video explains how to calibrate the multimeter, properly connect the leads, and select the correct settings for measuring DC voltage, AC voltage, resistance, and DC current. Emphasis is placed on ensuring accurate readings through proper preparation and adjustment, making it a comprehensive guide for beginners to understand and use the multimeter effectively.

Takeaways

• 😀 The multimeter (avometer) is a tool used for measuring electrical quantities such as voltage, current, and resistance.
• 😀 The **needle indicator** on the multimeter shows the measured value and moves according to the electrical quantity being measured.
• 😀 The **scale** on the multimeter is used to read measurements. It includes sections for current (A), voltage (V), and resistance (Ω).
• 😀 The **Zero Adjust Screw** helps calibrate the needle to the 0 position before taking measurements, ensuring accuracy.
• 😀 **Zero Ohm Adjust** is used when measuring resistance to ensure the needle points to 0 ohms before the measurement.
• 😀 **Positive and Negative Terminals**: The red terminal is for the positive connection, while the black terminal is for the negative connection.
• 😀 The **20 AMP DC Terminal** is used for measuring higher currents (up to 20 amps) in DC circuits.
• 😀 The multimeter can measure **DC voltage** (DCV), **AC voltage** (ACV), **DC current** (DCMA), and **resistance** (Ω).
• 😀 **Ring Selector Switch** is used to select the measurement type (voltage, current, resistance) and set the correct range on the multimeter.
• 😀 For accurate **current measurements**, the probes should be placed in the correct terminal depending on the expected current range (e.g., milliamp for small currents, 20 AMP for larger currents).
• 😀 Before measuring **resistance**, ensure the **Zero Ohm Adjust** knob is set to 0 ohms for an accurate reading.
• 😀 Always ensure the multimeter is properly calibrated (needle at 0) before taking any measurements to avoid inaccurate results.

Q & A

What is the primary function of a multimeter (avometer)?

The primary function of a multimeter is to measure electrical quantities such as voltage (DC and AC), current (DC), and resistance.

What is the role of the needle (jarum penunjuk) in the multimeter?

The needle indicates the measured value on the scale, moving according to the electrical quantity being measured, such as voltage, current, or resistance.

How does the scale on the multimeter help in taking measurements?

The scale provides the corresponding value for the measured quantity. It includes sections for current, voltage, and resistance, allowing for accurate readings when the needle points to the correct value.

What is the purpose of the Zero Adjust Screw (Zero Adjust SC)?

The Zero Adjust Screw is used to calibrate the needle to the zero position before performing any measurements, ensuring the meter reads accurately.

How do you use the Zero Ohm Adjust Knob when measuring resistance?

The Zero Ohm Adjust Knob is used to calibrate the multimeter needle to 0 ohms when measuring resistance, ensuring accurate resistance readings. The needle must be adjusted to point to 0 ohms before measuring.

What should you do if the needle does not point to 0 ohms when measuring resistance?

If the needle does not point to 0 ohms, you must use the Zero Ohm Adjust Knob to adjust it until the needle points correctly to 0 ohms before proceeding with the measurement.

What is the significance of the positive and negative terminals on the multimeter?

The positive and negative terminals are where you connect the test leads. The positive terminal (red) is for the positive side of the circuit, while the negative terminal (black) is for the negative side.

What is the role of the 20A DC terminal on the multimeter?

The 20A DC terminal is used for measuring higher current levels, specifically up to 20 amperes of DC current. This terminal is necessary when measuring large currents.

Can the multimeter be used to measure AC current?

No, the multimeter (avometer) cannot measure AC current. For AC current measurements, you must use a different device, such as an ammeter designed for AC.

How does the Ring Selector Switch (Selector Switch) function on the multimeter?

The Ring Selector Switch is used to select the measurement type (e.g., DC voltage, AC voltage, resistance, DC current) and its corresponding range. It allows the user to choose the correct setting for the measurement they wish to take.