Clamp Meter

What is Clamp meter?

A clamp meter, also known as a current clamp or current probe, is an electrical testing tool used to measure the current flowing through a conductor without having to disconnect it from the circuit.

A clamp meter works by measuring the magnetic field around the conductor, which is created by the current flowing through it. The meter has two jaws that open and close, allowing it to clamp around the conductor, and an electronic display that shows the current reading.

Clamp meters are useful for electricians and technicians who need to measure the current in electrical systems, such as in power distribution, HVAC systems, and industrial machinery. They are also useful for measuring the current in low-voltage circuits, such as in automotive systems.

Some clamp meters are capable of measuring both AC and DC currents, as well as other electrical parameters such as voltage, resistance, and frequency. Some advanced models may also have features such as data logging, Bluetooth connectivity, and integration with mobile apps for data analysis and reporting.

Where Clamp meter is used?

A clamp meter is used in a wide range of electrical applications where the measurement of electrical current is required. Here are some examples of where a clamp meter may be used:

  1. Electrical troubleshooting and maintenance: Electricians and technicians use clamp meters to measure current and voltage in electrical circuits, to identify and diagnose problems and to perform maintenance work on electrical systems.
  2. HVAC systems: HVAC technicians use clamp meters to measure the current draw of motors, compressors, and other components in heating, ventilation, and air conditioning (HVAC) systems.
  3. Automotive systems: Automotive technicians use clamp meters to measure the current draw of various components in the engine, such as the starter, alternator, and fuel injectors.
  4. Industrial machinery: In factories and manufacturing plants, clamp meters are used to measure the current in motors, pumps, and other machinery to ensure they are operating within the correct parameters.
  5. Power distribution: Utility workers use clamp meters to measure the current flowing through power lines and transformers, to ensure that they are operating correctly and to identify any problems that may cause power outages.
  6. Renewable energy: In the field of renewable energy, clamp meters are used to measure the current and voltage in solar panels, wind turbines, and other renewable energy systems.

Overall, a clamp meter is a versatile and useful tool for anyone who works with electrical systems, whether it is for maintenance, repair, or installation purposes.


Why Clamp meter needs Calibration?

Like most measurement tools, clamp meters need calibration to ensure that they are measuring electrical current accurately and within the acceptable margin of error. Over time, a clamp meter's internal components may drift, causing the readings to become less accurate. In addition, environmental factors, such as temperature and humidity, can affect the performance of the meter.

Calibration is the process of comparing a measurement device to a standard reference value and adjusting the device to bring it into alignment with the standard. By calibrating a clamp meter, you can ensure that it is providing accurate and reliable readings.

Calibration is especially important when the clamp meter is used for critical measurements, such as in medical equipment or in applications where the consequences of inaccurate measurements can be significant. Many industries and organizations, such as hospitals, testing laboratories, and regulatory bodies, have specific standards and requirements for calibration and measurement traceability.

Calibration of a clamp meter can be performed by a calibration service provider or by the manufacturer, and usually involves a series of tests to verify the accuracy of the meter's readings. The frequency of calibration depends on the intended use of the meter and the manufacturer's recommendations, but most manufacturers recommend annual calibration or after a certain number of uses, whichever comes first.

List of Clamp meter Manufacturers:

There are many manufacturers that produce clamp meters for use in electrical testing and measurement. Here are some of the well-known manufacturers of clamp meters:

  1. Fluke Corporation
  2. Klein Tools
  3. Amprobe
  4. Extech Instruments
  5. Hioki
  6. Uni-Trend Technology (UNI-T)
  7. Mastech
  8. Ideal Industries
  9. AEMC Instruments
  10. Yokogawa

These manufacturers produce a wide range of clamp meters, from basic models for hobbyists and DIY enthusiasts to advanced models for professional electricians, technicians, and engineers. Some of the features that differentiate clamp meters from different manufacturers include accuracy, measurement range, display type, and additional features such as data logging, wireless connectivity, and Bluetooth compatibility.

When choosing a clamp meter, it's important to consider your specific needs, the type of electrical systems you will be working on, and your budget. By doing some research and comparing different models and manufacturers, you can find the clamp meter that best suits your needs and provides accurate and reliable measurements.

Most popular Clamp meter Model:

There are many popular models of clamp meters, and the most suitable model for you will depend on your specific needs and requirements. However, here are some of the most popular clamp meter models used by professionals and enthusiasts:

  1. Fluke 376 FC: This clamp meter is known for its high accuracy and reliability, and has a wide measurement range of up to 1000A AC/DC. It also features wireless connectivity and a large, backlit display.
  2. Klein Tools CL800: This clamp meter is designed for electricians and features a True RMS measurement capability, a low impedance mode for voltage testing, and a built-in non-contact voltage detector.
  3. Amprobe AMP-220: This clamp meter is a versatile and reliable tool that can measure AC/DC voltage and current, as well as resistance and continuity. It features a large, easy-to-read display and a non-contact voltage detector.
  4. Extech EX330: This clamp meter is a budget-friendly option that still offers a range of useful features. It can measure AC/DC current up to 400A, and also features a non-contact voltage detector, a built-in flashlight, and a large, backlit display.
  5. Uni-T UT210E: This compact and affordable clamp meter is a popular choice among hobbyists and DIY enthusiasts. It can measure AC/DC current up to 200A, as well as AC/DC voltage, resistance, and continuity. It also features a large, easy-to-read display.

These models are just a few examples of the most popular clamp meters available on the market, and there are many other options to choose from. When selecting a clamp meter, it's important to consider the specific features and capabilities you need, as well as your budget and intended use.

Who can Calibrate Clamp meter?

Zenith Sales and Calibrations Pty Ltd has state of the art NATA (ISO17025) certified calibration standards and offers smart close loop computerised calibration service in our Sydney and Melbourne Laboratory.

Our Calibration Certificate will satisfy requirements of ISO 9001, ISO 14001, ISO 27001 ISO 45001, ISO 55001 etc.

We also provide on-site Calibration service, where we come to your site or facility.

Contact us for Clamp meter Calibration:

Sydney:        02 9680 8765

Melbourne:   03 9562 0373

24 x 7:          0481 516 098