Kyoritsu KEW MATE 2001 LCD Digital Multimeter, 100A ac Max, 100A dc Max, 600V ac Max

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Kyoritsu 2012R Handheld Digital Multimeter, True RMS, 120A ac Max, 120A dc Max, 600V ac Max


Multimeters are devices that measure multiple electrical properties including voltage (volts), current (amps) and resistance (ohms), providing valuable insights into the functionality and health of electrical systems. [Multimeters](https://au.rs-online.com/web/content/discovery/ideas-and-advice/digital-multimeters-guide) are available in a variety of types to suit diverse needs, ranging from basic models ideal for beginners, to advanced, high-precision ones designed for professionals who require a broader range of measurement capabilities.

## **What Is a Multimeter and How Does It Work?**

A multimeter is a versatile electronic measuring instrument, commonly used by electricians and technicians for troubleshooting and diagnosing electrical circuits and components. It works by utilising internal circuitry to measure electrical quantities, displaying the results on a screen or dial. 

They are available in two different types; analogue or digital. Analogue multimeters use a needle to indicate the measured value on a graduated scale, while digital multimeters provide a clear numerical display on an LCD screen for easier reading. Multimeters offer a wide range of testing capabilities, and their functionality can vary significantly depending on the model and price. Since no two multimeters are the same, it's crucial for electricians and electronic engineers to invest in a high-quality multimeter with diverse functions to meet their testing needs.

## **Types of Multimeters**

These are the following types of multimeters:

### **Analogue Multimeters**

Although relatively simple to use, analogue multimeters generally offer limited accuracy and fewer features compared to their digital counterparts. However, they are often preferred for specific tasks, such as observing rapidly fluctuating values or detecting continuity, where the visual representation of the needle movement can be advantageous.

### **Digital Multimeters**

Digital multimeters offer improved accuracy and a wider range of functions compared to the analogue versions. They come in various forms, including handheld and clamp meter versions, each catering to specific measurement requirements. Handheld multimeters are portable and convenient for field work, while clamp meters combine the functionality of a multimeter with a current clamp, for measuring high currents without interrupting the circuit.

### **Bench Multimeters**

Bench multimeters are a type of digital multimeter, representing larger, more sophisticated instruments designed for stationary use in workshops or laboratories. They offer high accuracy, advanced features and a wide range of measurement capabilities. This makes them ideal for tasks such as calibration, testing electronic components and conducting detailed circuit analysis. These multimeters are more suitable for engineers and technicians, who require precise measurements and advanced functionality for their work.

## **Multimeter Testing**

To ensure accurate and safe multimeter testing, follow these essential steps:

- **Visual Inspection:** Before starting, inspect the multimeter, test leads, and probes for any damage.
- **Safety First:** Prioritise safety by de-energising circuits when possible and using appropriate safety gear.
- **Function Selection:** Select the correct measurement function on the multimeter (voltage, current, resistance, etc.).
- **Probe Connection:** Connect the probes correctly, paying close attention to polarity (red to positive, black to negative).
- **Range Setting:** Begin with the highest range and gradually decrease it to avoid overloading the meter.
- **Measurement:** Take the measurement, ensuring stable readings.
- **Continuity/Diode Test:** Utilise the continuity and diode test functions to verify circuits and components.
- **Periodic Calibration:** Ensure accuracy by periodically testing the multimeter with a multimeter tester, which provides known values for verification.

## **Measurements Performed by Multimeters**

Beyond the fundamental measurements of multimeters, some models also offer additional functionalities to cater to diverse testing needs: 

- **AC or DC Voltage:** Measure the electrical potential difference between two points in a circuit, in either alternating current (AC) or direct current (DC) form.
- **Resistance:** Determine the opposition to the flow of electric current in a circuit or component.
- **Continuity: **Verify the completeness of an electrical circuit, or identify breaks in a wire or connection.
- **Current:** Measure the flow of electrical charge through a circuit.
- **Diode Testing:** Test the functionality of diodes — semiconductor devices that allow current to flow in only one direction.

Some advanced multimeters offer even more measurement capabilities, including:

- **Frequency:** Measure the number of cycles per second of an AC signal.
- **Temperature:** Determine temperature using a thermocouple probe.
- **Capacitance:** Measure the ability of a capacitor to store electrical charge.
- **True RMS:** Provide accurate readings of AC voltage and current, even for non-sinusoidal waveforms.
- **Auto-ranging:** Automatically select the appropriate measurement range, simplifying operation and preventing overload.

## **Multimeter vs Voltmeter**

While both multimeters and voltmeters measure voltage, they differ significantly in their functionality and applications:

- **Functionality:** While a voltmeter specialises solely in measuring voltage, a multimeter offers more functions by measuring various electrical properties, including voltage, current and resistance.
- **Versatility:** For diverse electrical tasks like troubleshooting and diagnostics, multimeters provide high versatility. Voltmeters, with their focus on precise voltage measurements, have a more limited scope.
- **Accuracy:** Voltmeters often deliver higher precision specifically for voltage measurements, making them ideal for sensitive circuits and calibration. Multimeters, while still accurate, offer a broader range of measurement capabilities.
- **Applications:** When precise voltage measurement is critical, such as in electronics design and calibration, voltmeters are preferred. Multimeters are commonly used for general electrical work, troubleshooting, and diagnostics due to their versatility.

## **Industrial Applications of Multimeters**

Multimeters are indispensable tools that prove their value in diverse applications and environments. They provide crucial insights into the functionality and safety of electrical systems across a range of industries: 

### **Electronics Industry**

Essential for testing and troubleshooting, multimeters play a vital role in the electronics industry. These devices help verify the correct operation of components, identify faults and ensure the quality and reliability of electronic circuits, devices and products.

### **Domestic Electrical Work**

When it comes to domestic electrical work, multimeters are invaluable tools. From installing wiring and testing outlets to troubleshooting faulty appliances, they ensure the safety and proper function of electrical systems within homes.

### **Commercial Electrical Installations**

Multimeters are crucial for ensuring compliance with safety standards in commercial electrical installations. By aiding in the testing and verification of [wiring](https://au.rs-online.com/web/c/cables-wires/), lighting systems, and other electrical equipment, they contribute to the reliable operation of electrical systems in commercial buildings.

### **Industrial Electrical Systems**

For the testing and maintenance of complex industrial electrical systems, multimeters are indispensable. Their ability to diagnose faults in motors, generators and control panels helps prevent downtime and ensures the safe operation of critical electrical infrastructure.

### **Automotive Industry**

Automotive technicians rely on multimeters as vital diagnostic tools. From testing battery voltage and checking charging systems to troubleshooting various electrical components, multimeters help ensure the proper function and safety of vehicle electrical systems.

## **How to Select the Right Multimeter**

Choosing the right multimeter depends on your specific needs and the type of electrical work you perform. If you primarily need basic functions like voltage, current and resistance, a standard digital multimeter will likely suffice. For more advanced measurements like capacitance or frequency, opt for a higher-end model. Make sure to factor in your work environment as well. A handheld multimeter is ideal for portability, while a benchtop multimeter offers greater accuracy for stationary use.

Ensure the multimeter has the necessary safety features, such as CAT ratings and overload protection, to ensure safe operation. Consider additional features like auto-ranging and data hold for added convenience. Finally, prioritise accuracy and resolution, opting for a multimeter that meets the precision requirements of your tasks.

## **Trusted Multimeter Manufacturer, Supplier and Distributor in Australia**

RS Australia is a leading distributor of high-quality multimeters, providing a comprehensive range of options for sale to meet diverse needs and applications. We source our multimeters from trusted brands renowned for their accuracy, reliability and innovation, including [Fluke](https://au.rs-online.com/web/c/test-measurement/multimeters-accessories/multimeters/?applied-dimensions=4294966576), [Keysight Technologies](https://au.rs-online.com/web/c/test-measurement/multimeters-accessories/multimeters/?applied-dimensions=4293780229) and our own [RS PRO](https://au.rs-online.com/web/content/m/rs-pro) line. 

Whether you're a professional electrician or an electronics engineer, RS Australia is your one-stop shop for all your multimeter needs, offering a range from basic models for simple electrical tasks, to advanced multimeters with specialised functions. Buy the perfect multimeter today — or explore associated tools like [multimeter leads](https://au.rs-online.com/web/c/test-measurement/multimeters-accessories/multimeter-leads/) and [electrical test leads](https://au.rs-online.com/web/c/test-measurement/test-leads-test-lead-kits/test-leads/) — to ensure the safety and efficiency of your electrical work.

## **Buy Multimeter from RS**

Browse our selection online, add your analogue or digital multimeter to your cart and proceed through our secure checkout. We offer various payment options for your convenience, with the ability to track your package upon your order confirmation. 

Additionally, enjoy fast delivery across all of Australia, with options to suit your timeframe and budget. For detailed information on our delivery services and prices, visit our [Delivery Information page](https://au.rs-online.com/web/content/support/all-articles/delivery) today.



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Kyoritsu Multimeters

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