The Difference Between Ammeter And Clamp Meter

Last Updated on July 13, 2022

If you’re looking to buy a new meter for your electrical work, you’ll probably want to know the difference between an ammeter and a clamp metre. This article will discuss the features that distinguish the two types of meters, including their price, accuracy, and functions.

This way, you can choose the right tool for your needs. Hopefully, this article has been helpful! If you have any questions about this topic, feel free to contact us at the number above.

Low-level filter

Ammeter and clamp metric devices measure current. The two types are almost identical in function and features, so it can be difficult for a new user to choose the correct one.

They both have different benefits and applications, and a good clamp meter can become an electrician’s bosom buddy. However, if the electrician needs more accuracy, he should invest in a separate high-quality multimeter.

Depending on the purpose of the project, the right combination of test equipment is essential. If you’re looking to make basic measurements, a basic meter may be sufficient.

However, if you’re working on power quality, a high-end digital multimeter with advanced features is recommended. For measuring current and voltage, a clamp meter with a low-level filter can help you detect problems with intermittent breaker trips.

Another important factor in choosing a low-level meter is the noise level. This problem affects virtually all electronic measurements, and is especially acute when it comes to low-level measurements.

It’s important to understand noise specifications, since normal-mode noise can seriously affect measurements. Noise filtering and shielding are commonly available in instruments, but it’s important to check these specifications before making a purchase.

Another advantage of low-level filters is that they allow for multiple ranges. By connecting two different shunts across the meter, an ammeter can operate at more than one range.

The desired range can be determined by a rotary switch. Alternatively, the meter can operate at multiple scales at the same time. A rotary switch connects a shunt across the meter to the desired range.

One of the most important differences between a clamp metre and an ammeter lies in the range of current and voltage. A clamp meter is more accurate, but its resistance range is not as wide as a digital multimeter.

Usually, the difference between the two is 0.1 ohms, and it’s important to use a voltage source when measuring resistance. Also, make sure that the circuit is unpowered before you measure it. You could damage your meter if you make the wrong choice.


The accuracy of an ammeter and a clamp metre differs depending on the voltage range they measure. Clamp meters are more accurate than standard multimeters, and some specialty models can have as high as 0.5% accuracy.

They can measure currents as high as 600A AC, while a standard analog multimeter is often only 3% or 0.50% accurate in DC ranges. These tools are ideal for use by technicians as they allow them to measure current safely without contacting conductors or turning off a current-carrying circuit.

The zero offset IZ adds to the meter’s input current IC and represents an unknown error. This error can be caused by a magnetic field of the Earth, a magnet near the sensor, or a misplaced zero control on the indicator.

This error can make the meter’s reading appear higher than it really is. Usually, this is not a problem, but it is worth pointing out.

Another important factor is the accuracy of the metre. A clamp meter is ideal for measuring currents, while a multimeter measures voltage, resistance, and continuity.

Both are useful and should be able to provide accurate readings, but it’s important to remember that not all meters are created equal. A good clamp meter is an electrician’s best friend. However, if you’re looking for high precision, you should invest in a separate, high-end multimeter.

When comparing an ammeter and a clamp metre, remember that the primary current is the one being measured. The secondary current is 1/1000 of the primary current.

This means that one amp measured by an ammeter will only produce 0.001 amp at the input. By reducing the number of turns, you can measure larger currents with a clamp meter. It is important to consider the safety of an electric meter when measuring currents.

Ammeters and clamp meters are both accurate and useful tools for measuring voltage and resistance. The only difference is how they read the current. The basic multimeter is a dial with a needle. An advanced multimeter has an auto-ranging feature. It’s ideal for measuring high AC amperage.

However, you can get an advanced model with wireless connectivity and other functions. If you’re looking for a tool to measure resistance and frequency, clamp meters are the best choice.



Ammeters and clamp meters are both instruments used to measure current. These tools were originally designed to measure one single electrical circuit, but with the advent of new technology, they have expanded their capabilities, offering higher accuracy and specialized measurement features.

To understand the differences between these two tools, we will first examine the purpose and function of each. What are their primary functions? The functions of an ammeter and clamp meter are outlined below.

Ammeters and clamp meters can measure both current and voltage. However, they have different ranges and capacities. A CAT III 600V meter is suitable for indoor and outdoor measurements, and a CAT IV 600V meter is suitable for use with underground electrical lines.

Both ammeters and clamp meters are designed to measure voltage, current, and resistance. They can also be used for other functions, such as analyzing battery voltage and resistance.

A clamp-on ammeter has jaws that can be opened or closed. The test leads are attached to the clamp on the ammeter. The jaws of a clamp-on ammeter are usually held open by a trigger or button, and the conductor is inserted into the center of the jaws.

The jaws are then closed, allowing the meter to take the measurement. When measuring voltage or current, it is important to maintain a distance of several inches or more between the two conductors.

Clamp meters can measure AC current without contact, and work on the magnetic induction principle. The flow of current in a wire creates a magnetic field. The Hall Effect sensor detects this magnetic field and creates a smaller voltage across the sensor.

The jaws open and close when a current is present. A clamp meter is ideal for measuring high-level current. Its primary and secondary windings are separated by an iron core.

A clamp metre is a portable test instrument used to measure current. This device measures the magnetic field strength around one conductor. Compared with multimeters, a clamp meter can be used in places with small electrical conductors and confined spaces.

However, its comparatively large size may make it difficult to use in such small spaces. For this reason, it is recommended to first check the voltage level and correct it before continuing the investigation.


The price difference between an ammeter and a clamp metre is not the same as the price of a multimeter. The latter costs less, but has higher accuracy. Both are good for testing voltage and current, and are generally safer than a multimeter.

If you are in the market for a new meter, you should invest in a multimeter instead of a clamp metre. Listed below are the pros and cons of each meter.

Clamp meters come in different models for measuring DC and AC current. The type you choose will depend on what you will be using the clamp meter for.

For example, if you’re going to use it to test batteries in automobiles, you’ll probably want one that measures DC current. Similarly, if you’re going to be measuring photovoltaic cells, you’ll want to consider a clamp meter that measures both DC and AC current.

The most important aspect of any metre is what it measures. If you’re looking for a simple clamp meter, go for one that can measure current accurately. But remember, not all meters are created equal. Precision is an important feature, since inaccurate results can cause harm.

High-end multimeters have a high degree of precision. You can use them as a standalone tool, or in combination with other tools, to test voltage and current.

While both meters have advantages and disadvantages, the AMP-210 is better than the clamp metre because it’s fused. It’s rated for 600-volts, but is not accurate enough for high-level technical jobs.

However, this device is ideal for troubleshooting electrical appliances and is a good choice for a beginner electrician. The range of features, accuracy, and cost are important when choosing between ammeters and clamp meters.

The difference in price is quite noticeable. An ammeter displays information in Amps while a clamp meter measures current in microamps. In addition to current, both meters measure voltage. They also measure voltage and DC voltage.

However, an ammeter can measure voltage and AC and DC power and can also measure resistance. A clamp meter is better for troubleshooting, but it’s not a good choice for configuration work.

Frequently Asked Questions (FAQs)

1. What is the main difference between an ammeter and a clamp meter?

An ammeter is a device that measures the current in a circuit, while a clamp meter is a device that measures the voltage in a circuit.

2. How does each type of meter measure current?

Ammeters measure current by passing a current through the circuit being measured. This causes a voltage drop in the circuit, which is measured by the ammeter. Clamp meters measure current by measuring the voltage in a circuit.

3. What are the benefits and drawbacks of each type of meter?

The benefits of ammeters are that they are relatively inexpensive and easy to use. They can also be used to measure the current in a circuit without disrupting the circuit. The drawbacks of ammeters are that they can only measure a limited range of currents, and they can not be used to measure currents in high-voltage circuits.

Final Words

Ammeters are devices that measure the current in a circuit, while clamp meters are devices that measure the voltage in a circuit. Both devices are important in electrical testing and troubleshooting.

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